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 */
113 static termline *newline(Terminal *term, int cols, int bce)
118 line = snew(termline);
119 line->chars = snewn(cols, termchar);
120 for (j = 0; j < cols; j++)
121 line->chars[j] = (bce ? term->erase_char : term->basic_erase_char);
122 line->cols = line->size = cols;
123 line->lattr = LATTR_NORM;
124 line->temporary = FALSE;
130 static void freeline(termline *line)
138 static void unlineptr(termline *line)
146 * Diagnostic function: verify that a termline has a correct
147 * combining character structure.
149 * This is a performance-intensive check, so it's no longer enabled
152 static void cc_check(termline *line)
154 unsigned char *flags;
157 assert(line->size >= line->cols);
159 flags = snewn(line->size, unsigned char);
161 for (i = 0; i < line->size; i++)
162 flags[i] = (i < line->cols);
164 for (i = 0; i < line->cols; i++) {
166 while (line->chars[j].cc_next) {
167 j += line->chars[j].cc_next;
168 assert(j >= line->cols && j < line->size);
177 assert(j >= line->cols && j < line->size);
180 if (line->chars[j].cc_next)
181 j += line->chars[j].cc_next;
188 for (i = 0; i < line->size; i++)
189 j += (flags[i] != 0);
191 assert(j == line->size);
198 * Add a combining character to a character cell.
200 static void add_cc(termline *line, int col, unsigned long chr)
204 assert(col >= 0 && col < line->cols);
207 * Start by extending the cols array if the free list is empty.
209 if (!line->cc_free) {
211 line->size += 16 + (line->size - line->cols) / 2;
212 line->chars = sresize(line->chars, line->size, termchar);
214 while (n < line->size) {
215 if (n+1 < line->size)
216 line->chars[n].cc_next = 1;
218 line->chars[n].cc_next = 0;
224 * Now walk the cc list of the cell in question.
226 while (line->chars[col].cc_next)
227 col += line->chars[col].cc_next;
230 * `col' now points at the last cc currently in this cell; so
231 * we simply add another one.
233 newcc = line->cc_free;
234 if (line->chars[newcc].cc_next)
235 line->cc_free = newcc + line->chars[newcc].cc_next;
238 line->chars[newcc].cc_next = 0;
239 line->chars[newcc].chr = chr;
240 line->chars[col].cc_next = newcc - col;
248 * Clear the combining character list in a character cell.
250 static void clear_cc(termline *line, int col)
252 int oldfree, origcol = col;
254 assert(col >= 0 && col < line->cols);
256 if (!line->chars[col].cc_next)
257 return; /* nothing needs doing */
259 oldfree = line->cc_free;
260 line->cc_free = col + line->chars[col].cc_next;
261 while (line->chars[col].cc_next)
262 col += line->chars[col].cc_next;
264 line->chars[col].cc_next = oldfree - col;
266 line->chars[col].cc_next = 0;
268 line->chars[origcol].cc_next = 0;
276 * Compare two character cells for equality. Special case required
277 * in do_paint() where we override what we expect the chr and attr
280 static int termchars_equal_override(termchar *a, termchar *b,
281 unsigned long bchr, unsigned long battr)
286 if ((a->attr &~ DATTR_MASK) != (battr &~ DATTR_MASK))
288 while (a->cc_next || b->cc_next) {
289 if (!a->cc_next || !b->cc_next)
290 return FALSE; /* one cc-list ends, other does not */
293 if (a->chr != b->chr)
299 static int termchars_equal(termchar *a, termchar *b)
301 return termchars_equal_override(a, b, b->chr, b->attr);
305 * Copy a character cell. (Requires a pointer to the destination
306 * termline, so as to access its free list.)
308 static void copy_termchar(termline *destline, int x, termchar *src)
310 clear_cc(destline, x);
312 destline->chars[x] = *src; /* copy everything except cc-list */
313 destline->chars[x].cc_next = 0; /* and make sure this is zero */
315 while (src->cc_next) {
317 add_cc(destline, x, src->chr);
326 * Move a character cell within its termline.
328 static void move_termchar(termline *line, termchar *dest, termchar *src)
330 /* First clear the cc list from the original char, just in case. */
331 clear_cc(line, dest - line->chars);
333 /* Move the character cell and adjust its cc_next. */
334 *dest = *src; /* copy everything except cc-list */
336 dest->cc_next = src->cc_next - (dest-src);
338 /* Ensure the original cell doesn't have a cc list. */
347 * Compress and decompress a termline into an RLE-based format for
348 * storing in scrollback. (Since scrollback almost never needs to
349 * be modified and exists in huge quantities, this is a sensible
350 * tradeoff, particularly since it allows us to continue adding
351 * features to the main termchar structure without proportionally
352 * bloating the terminal emulator's memory footprint unless those
353 * features are in constant use.)
359 static void add(struct buf *b, unsigned char c)
361 if (b->len >= b->size) {
362 b->size = (b->len * 3 / 2) + 512;
363 b->data = sresize(b->data, b->size, unsigned char);
365 b->data[b->len++] = c;
367 static int get(struct buf *b)
369 return b->data[b->len++];
371 static void makerle(struct buf *b, termline *ldata,
372 void (*makeliteral)(struct buf *b, termchar *c,
373 unsigned long *state))
375 int hdrpos, hdrsize, n, prevlen, prevpos, thislen, thispos, prev2;
376 termchar *c = ldata->chars;
377 unsigned long state = 0, oldstate;
384 prevlen = prevpos = 0;
389 makeliteral(b, c++, &state);
390 thislen = b->len - thispos;
391 if (thislen == prevlen &&
392 !memcmp(b->data + prevpos, b->data + thispos, thislen)) {
394 * This literal precisely matches the previous one.
395 * Turn it into a run if it's worthwhile.
397 * With one-byte literals, it costs us two bytes to
398 * encode a run, plus another byte to write the header
399 * to resume normal output; so a three-element run is
400 * neutral, and anything beyond that is unconditionally
401 * worthwhile. With two-byte literals or more, even a
404 if (thislen > 1 || prev2) {
408 * It's worth encoding a run. Start at prevpos,
409 * unless hdrsize==0 in which case we can back up
410 * another one and start by overwriting hdrpos.
413 hdrsize--; /* remove the literal at prevpos */
417 prevpos -= prevlen;/* and possibly another one */
421 assert(prevpos == hdrpos + 1);
423 b->len = prevpos+prevlen;
425 memmove(b->data + prevpos+1, b->data + prevpos, prevlen);
427 b->len = prevpos+prevlen+1;
429 * Terminate the previous run of ordinary
432 assert(hdrsize >= 1 && hdrsize <= 128);
433 b->data[hdrpos] = hdrsize - 1;
436 runlen = prev2 ? 3 : 2;
438 while (n > 0 && runlen < 129) {
442 makeliteral(b, c, &state);
443 tmplen = b->len - tmppos;
445 if (tmplen != thislen ||
446 memcmp(b->data + runpos+1, b->data + tmppos, tmplen)) {
448 break; /* run over */
453 assert(runlen >= 2 && runlen <= 129);
454 b->data[runpos] = runlen + 0x80 - 2;
459 /* And ensure this run doesn't interfere with the next. */
460 prevlen = prevpos = 0;
466 * Just flag that the previous two literals were
467 * identical, in case we find a third identical one
468 * we want to turn into a run.
481 * This character isn't (yet) part of a run. Add it to
485 if (hdrsize == 128) {
486 b->data[hdrpos] = hdrsize - 1;
490 prevlen = prevpos = 0;
499 assert(hdrsize <= 128);
500 b->data[hdrpos] = hdrsize - 1;
505 static void makeliteral_chr(struct buf *b, termchar *c, unsigned long *state)
508 * My encoding for characters is UTF-8-like, in that it stores
509 * 7-bit ASCII in one byte and uses high-bit-set bytes as
510 * introducers to indicate a longer sequence. However, it's
511 * unlike UTF-8 in that it doesn't need to be able to
512 * resynchronise, and therefore I don't want to waste two bits
513 * per byte on having recognisable continuation characters.
514 * Also I don't want to rule out the possibility that I may one
515 * day use values 0x80000000-0xFFFFFFFF for interesting
516 * purposes, so unlike UTF-8 I need a full 32-bit range.
517 * Accordingly, here is my encoding:
519 * 00000000-0000007F: 0xxxxxxx (but see below)
520 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
521 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
522 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
523 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
525 * (`Z' is like `x' but is always going to be zero since the
526 * values I'm encoding don't go above 2^32. In principle the
527 * five-byte form of the encoding could extend to 2^35, and
528 * there could be six-, seven-, eight- and nine-byte forms as
529 * well to allow up to 64-bit values to be encoded. But that's
530 * completely unnecessary for these purposes!)
532 * The encoding as written above would be very simple, except
533 * that 7-bit ASCII can occur in several different ways in the
534 * terminal data; sometimes it crops up in the D800 page
535 * (CSET_ASCII) but at other times it's in the 0000 page (real
536 * Unicode). Therefore, this encoding is actually _stateful_:
537 * the one-byte encoding of 00-7F actually indicates `reuse the
538 * upper three bytes of the last character', and to encode an
539 * absolute value of 00-7F you need to use the two-byte form
542 if ((c->chr & ~0x7F) == *state) {
543 add(b, (unsigned char)(c->chr & 0x7F));
544 } else if (c->chr < 0x4000) {
545 add(b, (unsigned char)(((c->chr >> 8) & 0x3F) | 0x80));
546 add(b, (unsigned char)(c->chr & 0xFF));
547 } else if (c->chr < 0x200000) {
548 add(b, (unsigned char)(((c->chr >> 16) & 0x1F) | 0xC0));
549 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
550 add(b, (unsigned char)(c->chr & 0xFF));
551 } else if (c->chr < 0x10000000) {
552 add(b, (unsigned char)(((c->chr >> 24) & 0x0F) | 0xE0));
553 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
554 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
555 add(b, (unsigned char)(c->chr & 0xFF));
558 add(b, (unsigned char)((c->chr >> 24) & 0xFF));
559 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
560 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
561 add(b, (unsigned char)(c->chr & 0xFF));
563 *state = c->chr & ~0xFF;
565 static void makeliteral_attr(struct buf *b, termchar *c, unsigned long *state)
568 * My encoding for attributes is 16-bit-granular and assumes
569 * that the top bit of the word is never required. I either
570 * store a two-byte value with the top bit clear (indicating
571 * just that value), or a four-byte value with the top bit set
572 * (indicating the same value with its top bit clear).
574 * However, first I permute the bits of the attribute value, so
575 * that the eight bits of colour (four in each of fg and bg)
576 * which are never non-zero unless xterm 256-colour mode is in
577 * use are placed higher up the word than everything else. This
578 * ensures that attribute values remain 16-bit _unless_ the
579 * user uses extended colour.
581 unsigned attr, colourbits;
585 assert(ATTR_BGSHIFT > ATTR_FGSHIFT);
587 colourbits = (attr >> (ATTR_BGSHIFT + 4)) & 0xF;
589 colourbits |= (attr >> (ATTR_FGSHIFT + 4)) & 0xF;
591 attr = (((attr >> (ATTR_BGSHIFT + 8)) << (ATTR_BGSHIFT + 4)) |
592 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
593 attr = (((attr >> (ATTR_FGSHIFT + 8)) << (ATTR_FGSHIFT + 4)) |
594 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
596 attr |= (colourbits << (32-9));
599 add(b, (unsigned char)((attr >> 8) & 0xFF));
600 add(b, (unsigned char)(attr & 0xFF));
602 add(b, (unsigned char)(((attr >> 24) & 0x7F) | 0x80));
603 add(b, (unsigned char)((attr >> 16) & 0xFF));
604 add(b, (unsigned char)((attr >> 8) & 0xFF));
605 add(b, (unsigned char)(attr & 0xFF));
608 static void makeliteral_cc(struct buf *b, termchar *c, unsigned long *state)
611 * For combining characters, I just encode a bunch of ordinary
612 * chars using makeliteral_chr, and terminate with a \0
613 * character (which I know won't come up as a combining char
616 * I don't use the stateful encoding in makeliteral_chr.
618 unsigned long zstate;
627 makeliteral_chr(b, c, &zstate);
632 makeliteral_chr(b, &z, &zstate);
635 static termline *decompressline(unsigned char *data, int *bytes_used);
637 static unsigned char *compressline(termline *ldata)
639 struct buf buffer = { NULL, 0, 0 }, *b = &buffer;
642 * First, store the column count, 7 bits at a time, least
643 * significant `digit' first, with the high bit set on all but
649 add(b, (unsigned char)((n & 0x7F) | 0x80));
652 add(b, (unsigned char)(n));
656 * Next store the lattrs; same principle.
659 int n = ldata->lattr;
661 add(b, (unsigned char)((n & 0x7F) | 0x80));
664 add(b, (unsigned char)(n));
668 * Now we store a sequence of separate run-length encoded
669 * fragments, each containing exactly as many symbols as there
670 * are columns in the ldata.
672 * All of these have a common basic format:
674 * - a byte 00-7F indicates that X+1 literals follow it
675 * - a byte 80-FF indicates that a single literal follows it
676 * and expects to be repeated (X-0x80)+2 times.
678 * The format of the `literals' varies between the fragments.
680 makerle(b, ldata, makeliteral_chr);
681 makerle(b, ldata, makeliteral_attr);
682 makerle(b, ldata, makeliteral_cc);
685 * Diagnostics: ensure that the compressed data really does
686 * decompress to the right thing.
688 * This is a bit performance-heavy for production code.
691 #ifndef CHECK_SB_COMPRESSION
697 #ifdef DIAGNOSTIC_SB_COMPRESSION
698 for (i = 0; i < b->len; i++) {
699 printf(" %02x ", b->data[i]);
704 dcl = decompressline(b->data, &dused);
705 assert(b->len == dused);
706 assert(ldata->cols == dcl->cols);
707 assert(ldata->lattr == dcl->lattr);
708 for (i = 0; i < ldata->cols; i++)
709 assert(termchars_equal(&ldata->chars[i], &dcl->chars[i]));
711 #ifdef DIAGNOSTIC_SB_COMPRESSION
712 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
713 ldata->cols, 4 * ldata->cols, dused,
714 (double)dused / (4 * ldata->cols));
720 #endif /* TERM_CC_DIAGS */
723 * Trim the allocated memory so we don't waste any, and return.
725 return sresize(b->data, b->len, unsigned char);
728 static void readrle(struct buf *b, termline *ldata,
729 void (*readliteral)(struct buf *b, termchar *c,
730 termline *ldata, unsigned long *state))
733 unsigned long state = 0;
735 while (n < ldata->cols) {
741 int pos = b->len, count = hdr + 2 - 0x80;
743 assert(n < ldata->cols);
745 readliteral(b, ldata->chars + n, ldata, &state);
749 /* Just a sequence of consecutive literals. */
753 assert(n < ldata->cols);
754 readliteral(b, ldata->chars + n, ldata, &state);
760 assert(n == ldata->cols);
762 static void readliteral_chr(struct buf *b, termchar *c, termline *ldata,
763 unsigned long *state)
768 * 00000000-0000007F: 0xxxxxxx
769 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
770 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
771 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
772 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
777 c->chr = byte | *state;
778 } else if (byte < 0xC0) {
779 c->chr = (byte &~ 0xC0) << 8;
781 } else if (byte < 0xE0) {
782 c->chr = (byte &~ 0xE0) << 16;
783 c->chr |= get(b) << 8;
785 } else if (byte < 0xF0) {
786 c->chr = (byte &~ 0xF0) << 24;
787 c->chr |= get(b) << 16;
788 c->chr |= get(b) << 8;
791 assert(byte == 0xF0);
792 c->chr = get(b) << 24;
793 c->chr |= get(b) << 16;
794 c->chr |= get(b) << 8;
797 *state = c->chr & ~0xFF;
799 static void readliteral_attr(struct buf *b, termchar *c, termline *ldata,
800 unsigned long *state)
802 unsigned val, attr, colourbits;
814 colourbits = (val >> (32-9)) & 0xFF;
815 attr = (val & ((1<<(32-9))-1));
817 attr = (((attr >> (ATTR_FGSHIFT + 4)) << (ATTR_FGSHIFT + 8)) |
818 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
819 attr = (((attr >> (ATTR_BGSHIFT + 4)) << (ATTR_BGSHIFT + 8)) |
820 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
822 attr |= (colourbits >> 4) << (ATTR_BGSHIFT + 4);
823 attr |= (colourbits & 0xF) << (ATTR_FGSHIFT + 4);
827 static void readliteral_cc(struct buf *b, termchar *c, termline *ldata,
828 unsigned long *state)
831 unsigned long zstate;
832 int x = c - ldata->chars;
838 readliteral_chr(b, &n, ldata, &zstate);
841 add_cc(ldata, x, n.chr);
845 static termline *decompressline(unsigned char *data, int *bytes_used)
847 int ncols, byte, shift;
848 struct buf buffer, *b = &buffer;
855 * First read in the column count.
860 ncols |= (byte & 0x7F) << shift;
862 } while (byte & 0x80);
865 * Now create the output termline.
867 ldata = snew(termline);
868 ldata->chars = snewn(ncols, termchar);
869 ldata->cols = ldata->size = ncols;
870 ldata->temporary = TRUE;
874 * We must set all the cc pointers in ldata->chars to 0 right
875 * now, so that cc diagnostics that verify the integrity of the
876 * whole line will make sense while we're in the middle of
881 for (i = 0; i < ldata->cols; i++)
882 ldata->chars[i].cc_next = 0;
886 * Now read in the lattr.
888 ldata->lattr = shift = 0;
891 ldata->lattr |= (byte & 0x7F) << shift;
893 } while (byte & 0x80);
896 * Now we read in each of the RLE streams in turn.
898 readrle(b, ldata, readliteral_chr);
899 readrle(b, ldata, readliteral_attr);
900 readrle(b, ldata, readliteral_cc);
902 /* Return the number of bytes read, for diagnostic purposes. */
904 *bytes_used = b->len;
910 * Resize a line to make it `cols' columns wide.
912 static void resizeline(Terminal *term, termline *line, int cols)
916 if (line->cols != cols) {
918 oldcols = line->cols;
921 * This line is the wrong length, which probably means it
922 * hasn't been accessed since a resize. Resize it now.
924 * First, go through all the characters that will be thrown
925 * out in the resize (if we're shrinking the line) and
926 * return their cc lists to the cc free list.
928 for (i = cols; i < oldcols; i++)
932 * If we're shrinking the line, we now bodily move the
933 * entire cc section from where it started to where it now
934 * needs to be. (We have to do this before the resize, so
935 * that the data we're copying is still there. However, if
936 * we're expanding, we have to wait until _after_ the
937 * resize so that the space we're copying into is there.)
940 memmove(line->chars + cols, line->chars + oldcols,
941 (line->size - line->cols) * TSIZE);
944 * Now do the actual resize, leaving the _same_ amount of
945 * cc space as there was to begin with.
947 line->size += cols - oldcols;
948 line->chars = sresize(line->chars, line->size, TTYPE);
952 * If we're expanding the line, _now_ we move the cc
956 memmove(line->chars + cols, line->chars + oldcols,
957 (line->size - line->cols) * TSIZE);
960 * Go through what's left of the original line, and adjust
961 * the first cc_next pointer in each list. (All the
962 * subsequent ones are still valid because they are
963 * relative offsets within the cc block.) Also do the same
964 * to the head of the cc_free list.
966 for (i = 0; i < oldcols && i < cols; i++)
967 if (line->chars[i].cc_next)
968 line->chars[i].cc_next += cols - oldcols;
970 line->cc_free += cols - oldcols;
973 * And finally fill in the new space with erase chars. (We
974 * don't have to worry about cc lists here, because we
975 * _know_ the erase char doesn't have one.)
977 for (i = oldcols; i < cols; i++)
978 line->chars[i] = term->basic_erase_char;
987 * Get the number of lines in the scrollback.
989 static int sblines(Terminal *term)
991 int sblines = count234(term->scrollback);
992 if (term->erase_to_scrollback &&
993 term->alt_which && term->alt_screen) {
994 sblines += term->alt_sblines;
1000 * Retrieve a line of the screen or of the scrollback, according to
1001 * whether the y coordinate is non-negative or negative
1004 static termline *lineptr(Terminal *term, int y, int lineno, int screen)
1011 whichtree = term->screen;
1018 if (term->erase_to_scrollback &&
1019 term->alt_which && term->alt_screen) {
1020 altlines = term->alt_sblines;
1022 if (y < -altlines) {
1023 whichtree = term->scrollback;
1024 treeindex = y + altlines + count234(term->scrollback);
1026 whichtree = term->alt_screen;
1027 treeindex = y + term->alt_sblines;
1028 /* treeindex = y + count234(term->alt_screen); */
1031 if (whichtree == term->scrollback) {
1032 unsigned char *cline = index234(whichtree, treeindex);
1033 line = decompressline(cline, NULL);
1035 line = index234(whichtree, treeindex);
1038 /* We assume that we don't screw up and retrieve something out of range. */
1040 fatalbox("line==NULL in terminal.c\n"
1041 "lineno=%d y=%d w=%d h=%d\n"
1042 "count(scrollback=%p)=%d\n"
1043 "count(screen=%p)=%d\n"
1044 "count(alt=%p)=%d alt_sblines=%d\n"
1045 "whichtree=%p treeindex=%d\n\n"
1046 "Please contact <putty@projects.tartarus.org> "
1047 "and pass on the above information.",
1048 lineno, y, term->cols, term->rows,
1049 term->scrollback, count234(term->scrollback),
1050 term->screen, count234(term->screen),
1051 term->alt_screen, count234(term->alt_screen), term->alt_sblines,
1052 whichtree, treeindex);
1054 assert(line != NULL);
1056 resizeline(term, line, term->cols);
1057 /* FIXME: should we sort the compressed scrollback out here? */
1062 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
1063 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
1065 static void term_schedule_tblink(Terminal *term);
1066 static void term_schedule_cblink(Terminal *term);
1068 static void term_timer(void *ctx, unsigned long now)
1070 Terminal *term = (Terminal *)ctx;
1073 if (term->tblink_pending && now == term->next_tblink) {
1074 term->tblinker = !term->tblinker;
1075 term->tblink_pending = FALSE;
1076 term_schedule_tblink(term);
1080 if (term->cblink_pending && now == term->next_cblink) {
1081 term->cblinker = !term->cblinker;
1082 term->cblink_pending = FALSE;
1083 term_schedule_cblink(term);
1087 if (term->in_vbell && now == term->vbell_end) {
1088 term->in_vbell = FALSE;
1093 (term->window_update_pending && now == term->next_update))
1097 static void term_schedule_update(Terminal *term)
1099 if (!term->window_update_pending) {
1100 term->window_update_pending = TRUE;
1101 term->next_update = schedule_timer(UPDATE_DELAY, term_timer, term);
1106 * Call this whenever the terminal window state changes, to queue
1109 static void seen_disp_event(Terminal *term)
1111 term->seen_disp_event = TRUE; /* for scrollback-reset-on-activity */
1112 term_schedule_update(term);
1116 * Call when the terminal's blinking-text settings change, or when
1117 * a text blink has just occurred.
1119 static void term_schedule_tblink(Terminal *term)
1121 if (term->blink_is_real) {
1122 if (!term->tblink_pending)
1123 term->next_tblink = schedule_timer(TBLINK_DELAY, term_timer, term);
1124 term->tblink_pending = TRUE;
1126 term->tblinker = 1; /* reset when not in use */
1127 term->tblink_pending = FALSE;
1132 * Likewise with cursor blinks.
1134 static void term_schedule_cblink(Terminal *term)
1136 if (term->blink_cur && term->has_focus) {
1137 if (!term->cblink_pending)
1138 term->next_cblink = schedule_timer(CBLINK_DELAY, term_timer, term);
1139 term->cblink_pending = TRUE;
1141 term->cblinker = 1; /* reset when not in use */
1142 term->cblink_pending = FALSE;
1147 * Call to reset cursor blinking on new output.
1149 static void term_reset_cblink(Terminal *term)
1151 seen_disp_event(term);
1153 term->cblink_pending = FALSE;
1154 term_schedule_cblink(term);
1158 * Call to begin a visual bell.
1160 static void term_schedule_vbell(Terminal *term, int already_started,
1163 long ticks_already_gone;
1165 if (already_started)
1166 ticks_already_gone = GETTICKCOUNT() - startpoint;
1168 ticks_already_gone = 0;
1170 if (ticks_already_gone < VBELL_DELAY) {
1171 term->in_vbell = TRUE;
1172 term->vbell_end = schedule_timer(VBELL_DELAY - ticks_already_gone,
1175 term->in_vbell = FALSE;
1180 * Set up power-on settings for the terminal.
1181 * If 'clear' is false, don't actually clear the primary screen, and
1182 * position the cursor below the last non-blank line (scrolling if
1185 static void power_on(Terminal *term, int clear)
1187 term->alt_x = term->alt_y = 0;
1188 term->savecurs.x = term->savecurs.y = 0;
1189 term->alt_savecurs.x = term->alt_savecurs.y = 0;
1190 term->alt_t = term->marg_t = 0;
1191 if (term->rows != -1)
1192 term->alt_b = term->marg_b = term->rows - 1;
1194 term->alt_b = term->marg_b = 0;
1195 if (term->cols != -1) {
1197 for (i = 0; i < term->cols; i++)
1198 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1200 term->alt_om = term->dec_om = conf_get_int(term->conf, CONF_dec_om);
1201 term->alt_ins = term->insert = FALSE;
1202 term->alt_wnext = term->wrapnext =
1203 term->save_wnext = term->alt_save_wnext = FALSE;
1204 term->alt_wrap = term->wrap = conf_get_int(term->conf, CONF_wrap_mode);
1205 term->alt_cset = term->cset = term->save_cset = term->alt_save_cset = 0;
1206 term->alt_utf = term->utf = term->save_utf = term->alt_save_utf = 0;
1207 term->utf_state = 0;
1208 term->alt_sco_acs = term->sco_acs =
1209 term->save_sco_acs = term->alt_save_sco_acs = 0;
1210 term->cset_attr[0] = term->cset_attr[1] =
1211 term->save_csattr = term->alt_save_csattr = CSET_ASCII;
1213 term->in_vbell = FALSE;
1214 term->cursor_on = 1;
1215 term->big_cursor = 0;
1216 term->default_attr = term->save_attr =
1217 term->alt_save_attr = term->curr_attr = ATTR_DEFAULT;
1218 term->term_editing = term->term_echoing = FALSE;
1219 term->app_cursor_keys = conf_get_int(term->conf, CONF_app_cursor);
1220 term->app_keypad_keys = conf_get_int(term->conf, CONF_app_keypad);
1221 term->use_bce = conf_get_int(term->conf, CONF_bce);
1222 term->blink_is_real = conf_get_int(term->conf, CONF_blinktext);
1223 term->erase_char = term->basic_erase_char;
1224 term->alt_which = 0;
1225 term_print_finish(term);
1226 term->xterm_mouse = 0;
1227 term->xterm_extended_mouse = 0;
1228 term->urxvt_extended_mouse = 0;
1229 set_raw_mouse_mode(term->frontend, FALSE);
1230 term->bracketed_paste = FALSE;
1233 for (i = 0; i < 256; i++)
1234 term->wordness[i] = conf_get_int_int(term->conf, CONF_wordness, i);
1237 swap_screen(term, 1, FALSE, FALSE);
1238 erase_lots(term, FALSE, TRUE, TRUE);
1239 swap_screen(term, 0, FALSE, FALSE);
1241 erase_lots(term, FALSE, TRUE, TRUE);
1242 term->curs.y = find_last_nonempty_line(term, term->screen) + 1;
1243 if (term->curs.y == term->rows) {
1245 scroll(term, 0, term->rows - 1, 1, TRUE);
1251 term_schedule_tblink(term);
1252 term_schedule_cblink(term);
1256 * Force a screen update.
1258 void term_update(Terminal *term)
1262 term->window_update_pending = FALSE;
1264 ctx = get_ctx(term->frontend);
1266 int need_sbar_update = term->seen_disp_event;
1267 if (term->seen_disp_event && term->scroll_on_disp) {
1268 term->disptop = 0; /* return to main screen */
1269 term->seen_disp_event = 0;
1270 need_sbar_update = TRUE;
1273 if (need_sbar_update)
1275 do_paint(term, ctx, TRUE);
1276 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
1282 * Called from front end when a keypress occurs, to trigger
1283 * anything magical that needs to happen in that situation.
1285 void term_seen_key_event(Terminal *term)
1288 * On any keypress, clear the bell overload mechanism
1289 * completely, on the grounds that large numbers of
1290 * beeps coming from deliberate key action are likely
1291 * to be intended (e.g. beeps from filename completion
1292 * blocking repeatedly).
1294 term->beep_overloaded = FALSE;
1295 while (term->beephead) {
1296 struct beeptime *tmp = term->beephead;
1297 term->beephead = tmp->next;
1300 term->beeptail = NULL;
1304 * Reset the scrollback on keypress, if we're doing that.
1306 if (term->scroll_on_key) {
1307 term->disptop = 0; /* return to main screen */
1308 seen_disp_event(term);
1313 * Same as power_on(), but an external function.
1315 void term_pwron(Terminal *term, int clear)
1317 power_on(term, clear);
1318 if (term->ldisc) /* cause ldisc to notice changes */
1319 ldisc_send(term->ldisc, NULL, 0, 0);
1325 static void set_erase_char(Terminal *term)
1327 term->erase_char = term->basic_erase_char;
1329 term->erase_char.attr = (term->curr_attr &
1330 (ATTR_FGMASK | ATTR_BGMASK));
1334 * We copy a bunch of stuff out of the Conf structure into local
1335 * fields in the Terminal structure, to avoid the repeated tree234
1336 * lookups which would be involved in fetching them from the former
1339 void term_copy_stuff_from_conf(Terminal *term)
1341 term->ansi_colour = conf_get_int(term->conf, CONF_ansi_colour);
1342 term->arabicshaping = conf_get_int(term->conf, CONF_arabicshaping);
1343 term->beep = conf_get_int(term->conf, CONF_beep);
1344 term->bellovl = conf_get_int(term->conf, CONF_bellovl);
1345 term->bellovl_n = conf_get_int(term->conf, CONF_bellovl_n);
1346 term->bellovl_s = conf_get_int(term->conf, CONF_bellovl_s);
1347 term->bellovl_t = conf_get_int(term->conf, CONF_bellovl_t);
1348 term->bidi = conf_get_int(term->conf, CONF_bidi);
1349 term->bksp_is_delete = conf_get_int(term->conf, CONF_bksp_is_delete);
1350 term->blink_cur = conf_get_int(term->conf, CONF_blink_cur);
1351 term->blinktext = conf_get_int(term->conf, CONF_blinktext);
1352 term->cjk_ambig_wide = conf_get_int(term->conf, CONF_cjk_ambig_wide);
1353 term->conf_height = conf_get_int(term->conf, CONF_height);
1354 term->conf_width = conf_get_int(term->conf, CONF_width);
1355 term->crhaslf = conf_get_int(term->conf, CONF_crhaslf);
1356 term->erase_to_scrollback = conf_get_int(term->conf, CONF_erase_to_scrollback);
1357 term->funky_type = conf_get_int(term->conf, CONF_funky_type);
1358 term->lfhascr = conf_get_int(term->conf, CONF_lfhascr);
1359 term->logflush = conf_get_int(term->conf, CONF_logflush);
1360 term->logtype = conf_get_int(term->conf, CONF_logtype);
1361 term->mouse_override = conf_get_int(term->conf, CONF_mouse_override);
1362 term->nethack_keypad = conf_get_int(term->conf, CONF_nethack_keypad);
1363 term->no_alt_screen = conf_get_int(term->conf, CONF_no_alt_screen);
1364 term->no_applic_c = conf_get_int(term->conf, CONF_no_applic_c);
1365 term->no_applic_k = conf_get_int(term->conf, CONF_no_applic_k);
1366 term->no_dbackspace = conf_get_int(term->conf, CONF_no_dbackspace);
1367 term->no_mouse_rep = conf_get_int(term->conf, CONF_no_mouse_rep);
1368 term->no_remote_charset = conf_get_int(term->conf, CONF_no_remote_charset);
1369 term->no_remote_resize = conf_get_int(term->conf, CONF_no_remote_resize);
1370 term->no_remote_wintitle = conf_get_int(term->conf, CONF_no_remote_wintitle);
1371 term->rawcnp = conf_get_int(term->conf, CONF_rawcnp);
1372 term->rect_select = conf_get_int(term->conf, CONF_rect_select);
1373 term->remote_qtitle_action = conf_get_int(term->conf, CONF_remote_qtitle_action);
1374 term->rxvt_homeend = conf_get_int(term->conf, CONF_rxvt_homeend);
1375 term->scroll_on_disp = conf_get_int(term->conf, CONF_scroll_on_disp);
1376 term->scroll_on_key = conf_get_int(term->conf, CONF_scroll_on_key);
1377 term->xterm_256_colour = conf_get_int(term->conf, CONF_xterm_256_colour);
1380 * Parse the control-character escapes in the configured
1381 * answerback string.
1384 char *answerback = conf_get_str(term->conf, CONF_answerback);
1385 int maxlen = strlen(answerback);
1387 term->answerback = snewn(maxlen, char);
1388 term->answerbacklen = 0;
1390 while (*answerback) {
1392 char c = ctrlparse(answerback, &n);
1394 term->answerback[term->answerbacklen++] = c;
1397 term->answerback[term->answerbacklen++] = *answerback++;
1404 * When the user reconfigures us, we need to check the forbidden-
1405 * alternate-screen config option, disable raw mouse mode if the
1406 * user has disabled mouse reporting, and abandon a print job if
1407 * the user has disabled printing.
1409 void term_reconfig(Terminal *term, Conf *conf)
1412 * Before adopting the new config, check all those terminal
1413 * settings which control power-on defaults; and if they've
1414 * changed, we will modify the current state as well as the
1415 * default one. The full list is: Auto wrap mode, DEC Origin
1416 * Mode, BCE, blinking text, character classes.
1418 int reset_wrap, reset_decom, reset_bce, reset_tblink, reset_charclass;
1421 reset_wrap = (conf_get_int(term->conf, CONF_wrap_mode) !=
1422 conf_get_int(conf, CONF_wrap_mode));
1423 reset_decom = (conf_get_int(term->conf, CONF_dec_om) !=
1424 conf_get_int(conf, CONF_dec_om));
1425 reset_bce = (conf_get_int(term->conf, CONF_bce) !=
1426 conf_get_int(conf, CONF_bce));
1427 reset_tblink = (conf_get_int(term->conf, CONF_blinktext) !=
1428 conf_get_int(conf, CONF_blinktext));
1429 reset_charclass = 0;
1430 for (i = 0; i < 256; i++)
1431 if (conf_get_int_int(term->conf, CONF_wordness, i) !=
1432 conf_get_int_int(conf, CONF_wordness, i))
1433 reset_charclass = 1;
1436 * If the bidi or shaping settings have changed, flush the bidi
1439 if (conf_get_int(term->conf, CONF_arabicshaping) !=
1440 conf_get_int(conf, CONF_arabicshaping) ||
1441 conf_get_int(term->conf, CONF_bidi) !=
1442 conf_get_int(conf, CONF_bidi)) {
1443 for (i = 0; i < term->bidi_cache_size; i++) {
1444 sfree(term->pre_bidi_cache[i].chars);
1445 sfree(term->post_bidi_cache[i].chars);
1446 term->pre_bidi_cache[i].width = -1;
1447 term->pre_bidi_cache[i].chars = NULL;
1448 term->post_bidi_cache[i].width = -1;
1449 term->post_bidi_cache[i].chars = NULL;
1453 conf_free(term->conf);
1454 term->conf = conf_copy(conf);
1457 term->alt_wrap = term->wrap = conf_get_int(term->conf, CONF_wrap_mode);
1459 term->alt_om = term->dec_om = conf_get_int(term->conf, CONF_dec_om);
1461 term->use_bce = conf_get_int(term->conf, CONF_bce);
1462 set_erase_char(term);
1465 term->blink_is_real = conf_get_int(term->conf, CONF_blinktext);
1467 if (reset_charclass)
1468 for (i = 0; i < 256; i++)
1469 term->wordness[i] = conf_get_int_int(term->conf, CONF_wordness, i);
1471 if (conf_get_int(term->conf, CONF_no_alt_screen))
1472 swap_screen(term, 0, FALSE, FALSE);
1473 if (conf_get_int(term->conf, CONF_no_mouse_rep)) {
1474 term->xterm_mouse = 0;
1475 set_raw_mouse_mode(term->frontend, 0);
1477 if (conf_get_int(term->conf, CONF_no_remote_charset)) {
1478 term->cset_attr[0] = term->cset_attr[1] = CSET_ASCII;
1479 term->sco_acs = term->alt_sco_acs = 0;
1482 if (!conf_get_str(term->conf, CONF_printer)) {
1483 term_print_finish(term);
1485 term_schedule_tblink(term);
1486 term_schedule_cblink(term);
1487 term_copy_stuff_from_conf(term);
1491 * Clear the scrollback.
1493 void term_clrsb(Terminal *term)
1495 unsigned char *line;
1497 while ((line = delpos234(term->scrollback, 0)) != NULL) {
1498 sfree(line); /* this is compressed data, not a termline */
1500 term->tempsblines = 0;
1501 term->alt_sblines = 0;
1506 * Initialise the terminal.
1508 Terminal *term_init(Conf *myconf, struct unicode_data *ucsdata,
1514 * Allocate a new Terminal structure and initialise the fields
1517 term = snew(Terminal);
1518 term->frontend = frontend;
1519 term->ucsdata = ucsdata;
1520 term->conf = conf_copy(myconf);
1521 term->logctx = NULL;
1522 term->compatibility_level = TM_PUTTY;
1523 strcpy(term->id_string, "\033[?6c");
1524 term->cblink_pending = term->tblink_pending = FALSE;
1525 term->paste_buffer = NULL;
1526 term->paste_len = 0;
1527 bufchain_init(&term->inbuf);
1528 bufchain_init(&term->printer_buf);
1529 term->printing = term->only_printing = FALSE;
1530 term->print_job = NULL;
1531 term->vt52_mode = FALSE;
1532 term->cr_lf_return = FALSE;
1533 term->seen_disp_event = FALSE;
1534 term->mouse_is_down = FALSE;
1535 term->reset_132 = FALSE;
1536 term->cblinker = term->tblinker = 0;
1537 term->has_focus = 1;
1538 term->repeat_off = FALSE;
1539 term->termstate = TOPLEVEL;
1540 term->selstate = NO_SELECTION;
1543 term_copy_stuff_from_conf(term);
1545 term->screen = term->alt_screen = term->scrollback = NULL;
1546 term->tempsblines = 0;
1547 term->alt_sblines = 0;
1549 term->disptext = NULL;
1550 term->dispcursx = term->dispcursy = -1;
1553 term->rows = term->cols = -1;
1554 power_on(term, TRUE);
1555 term->beephead = term->beeptail = NULL;
1556 #ifdef OPTIMISE_SCROLL
1557 term->scrollhead = term->scrolltail = NULL;
1558 #endif /* OPTIMISE_SCROLL */
1560 term->lastbeep = FALSE;
1561 term->beep_overloaded = FALSE;
1562 term->attr_mask = 0xffffffff;
1563 term->resize_fn = NULL;
1564 term->resize_ctx = NULL;
1565 term->in_term_out = FALSE;
1567 term->ltemp_size = 0;
1568 term->wcFrom = NULL;
1570 term->wcFromTo_size = 0;
1572 term->window_update_pending = FALSE;
1574 term->bidi_cache_size = 0;
1575 term->pre_bidi_cache = term->post_bidi_cache = NULL;
1578 term->basic_erase_char.chr = CSET_ASCII | ' ';
1579 term->basic_erase_char.attr = ATTR_DEFAULT;
1580 term->basic_erase_char.cc_next = 0;
1581 term->erase_char = term->basic_erase_char;
1586 void term_free(Terminal *term)
1589 struct beeptime *beep;
1592 while ((line = delpos234(term->scrollback, 0)) != NULL)
1593 sfree(line); /* compressed data, not a termline */
1594 freetree234(term->scrollback);
1595 while ((line = delpos234(term->screen, 0)) != NULL)
1597 freetree234(term->screen);
1598 while ((line = delpos234(term->alt_screen, 0)) != NULL)
1600 freetree234(term->alt_screen);
1601 if (term->disptext) {
1602 for (i = 0; i < term->rows; i++)
1603 freeline(term->disptext[i]);
1605 sfree(term->disptext);
1606 while (term->beephead) {
1607 beep = term->beephead;
1608 term->beephead = beep->next;
1611 bufchain_clear(&term->inbuf);
1613 printer_finish_job(term->print_job);
1614 bufchain_clear(&term->printer_buf);
1615 sfree(term->paste_buffer);
1617 sfree(term->wcFrom);
1620 for (i = 0; i < term->bidi_cache_size; i++) {
1621 sfree(term->pre_bidi_cache[i].chars);
1622 sfree(term->post_bidi_cache[i].chars);
1623 sfree(term->post_bidi_cache[i].forward);
1624 sfree(term->post_bidi_cache[i].backward);
1626 sfree(term->pre_bidi_cache);
1627 sfree(term->post_bidi_cache);
1631 expire_timer_context(term);
1633 conf_free(term->conf);
1639 * Set up the terminal for a given size.
1641 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
1644 termline **newdisp, *line;
1645 int i, j, oldrows = term->rows;
1647 int save_alt_which = term->alt_which;
1649 if (newrows == term->rows && newcols == term->cols &&
1650 newsavelines == term->savelines)
1651 return; /* nothing to do */
1653 /* Behave sensibly if we're given zero (or negative) rows/cols */
1655 if (newrows < 1) newrows = 1;
1656 if (newcols < 1) newcols = 1;
1659 swap_screen(term, 0, FALSE, FALSE);
1661 term->alt_t = term->marg_t = 0;
1662 term->alt_b = term->marg_b = newrows - 1;
1664 if (term->rows == -1) {
1665 term->scrollback = newtree234(NULL);
1666 term->screen = newtree234(NULL);
1667 term->tempsblines = 0;
1672 * Resize the screen and scrollback. We only need to shift
1673 * lines around within our data structures, because lineptr()
1674 * will take care of resizing each individual line if
1677 * - If the new screen is longer, we shunt lines in from temporary
1678 * scrollback if possible, otherwise we add new blank lines at
1681 * - If the new screen is shorter, we remove any blank lines at
1682 * the bottom if possible, otherwise shunt lines above the cursor
1683 * to scrollback if possible, otherwise delete lines below the
1686 * - Then, if the new scrollback length is less than the
1687 * amount of scrollback we actually have, we must throw some
1690 sblen = count234(term->scrollback);
1691 /* Do this loop to expand the screen if newrows > rows */
1692 assert(term->rows == count234(term->screen));
1693 while (term->rows < newrows) {
1694 if (term->tempsblines > 0) {
1695 unsigned char *cline;
1696 /* Insert a line from the scrollback at the top of the screen. */
1697 assert(sblen >= term->tempsblines);
1698 cline = delpos234(term->scrollback, --sblen);
1699 line = decompressline(cline, NULL);
1701 line->temporary = FALSE; /* reconstituted line is now real */
1702 term->tempsblines -= 1;
1703 addpos234(term->screen, line, 0);
1705 term->savecurs.y += 1;
1707 term->alt_savecurs.y += 1;
1709 /* Add a new blank line at the bottom of the screen. */
1710 line = newline(term, newcols, FALSE);
1711 addpos234(term->screen, line, count234(term->screen));
1715 /* Do this loop to shrink the screen if newrows < rows */
1716 while (term->rows > newrows) {
1717 if (term->curs.y < term->rows - 1) {
1718 /* delete bottom row, unless it contains the cursor */
1719 line = delpos234(term->screen, term->rows - 1);
1722 /* push top row to scrollback */
1723 line = delpos234(term->screen, 0);
1724 addpos234(term->scrollback, compressline(line), sblen++);
1726 term->tempsblines += 1;
1728 term->savecurs.y -= 1;
1730 term->alt_savecurs.y -= 1;
1734 assert(term->rows == newrows);
1735 assert(count234(term->screen) == newrows);
1737 /* Delete any excess lines from the scrollback. */
1738 while (sblen > newsavelines) {
1739 line = delpos234(term->scrollback, 0);
1743 if (sblen < term->tempsblines)
1744 term->tempsblines = sblen;
1745 assert(count234(term->scrollback) <= newsavelines);
1746 assert(count234(term->scrollback) >= term->tempsblines);
1749 /* Make a new displayed text buffer. */
1750 newdisp = snewn(newrows, termline *);
1751 for (i = 0; i < newrows; i++) {
1752 newdisp[i] = newline(term, newcols, FALSE);
1753 for (j = 0; j < newcols; j++)
1754 newdisp[i]->chars[j].attr = ATTR_INVALID;
1756 if (term->disptext) {
1757 for (i = 0; i < oldrows; i++)
1758 freeline(term->disptext[i]);
1760 sfree(term->disptext);
1761 term->disptext = newdisp;
1762 term->dispcursx = term->dispcursy = -1;
1764 /* Make a new alternate screen. */
1765 newalt = newtree234(NULL);
1766 for (i = 0; i < newrows; i++) {
1767 line = newline(term, newcols, TRUE);
1768 addpos234(newalt, line, i);
1770 if (term->alt_screen) {
1771 while (NULL != (line = delpos234(term->alt_screen, 0)))
1773 freetree234(term->alt_screen);
1775 term->alt_screen = newalt;
1776 term->alt_sblines = 0;
1778 term->tabs = sresize(term->tabs, newcols, unsigned char);
1781 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
1782 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1785 /* Check that the cursor positions are still valid. */
1786 if (term->savecurs.y < 0)
1787 term->savecurs.y = 0;
1788 if (term->savecurs.y >= newrows)
1789 term->savecurs.y = newrows - 1;
1790 if (term->savecurs.x >= newcols)
1791 term->savecurs.x = newcols - 1;
1792 if (term->alt_savecurs.y < 0)
1793 term->alt_savecurs.y = 0;
1794 if (term->alt_savecurs.y >= newrows)
1795 term->alt_savecurs.y = newrows - 1;
1796 if (term->alt_savecurs.x >= newcols)
1797 term->alt_savecurs.x = newcols - 1;
1798 if (term->curs.y < 0)
1800 if (term->curs.y >= newrows)
1801 term->curs.y = newrows - 1;
1802 if (term->curs.x >= newcols)
1803 term->curs.x = newcols - 1;
1804 if (term->alt_y < 0)
1806 if (term->alt_y >= newrows)
1807 term->alt_y = newrows - 1;
1808 if (term->alt_x >= newcols)
1809 term->alt_x = newcols - 1;
1810 term->alt_x = term->alt_y = 0;
1811 term->wrapnext = term->alt_wnext = FALSE;
1813 term->rows = newrows;
1814 term->cols = newcols;
1815 term->savelines = newsavelines;
1817 swap_screen(term, save_alt_which, FALSE, FALSE);
1821 if (term->resize_fn)
1822 term->resize_fn(term->resize_ctx, term->cols, term->rows);
1826 * Hand a function and context pointer to the terminal which it can
1827 * use to notify a back end of resizes.
1829 void term_provide_resize_fn(Terminal *term,
1830 void (*resize_fn)(void *, int, int),
1833 term->resize_fn = resize_fn;
1834 term->resize_ctx = resize_ctx;
1835 if (resize_fn && term->cols > 0 && term->rows > 0)
1836 resize_fn(resize_ctx, term->cols, term->rows);
1839 /* Find the bottom line on the screen that has any content.
1840 * If only the top line has content, returns 0.
1841 * If no lines have content, return -1.
1843 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
1846 for (i = count234(screen) - 1; i >= 0; i--) {
1847 termline *line = index234(screen, i);
1849 for (j = 0; j < line->cols; j++)
1850 if (!termchars_equal(&line->chars[j], &term->erase_char))
1852 if (j != line->cols) break;
1858 * Swap screens. If `reset' is TRUE and we have been asked to
1859 * switch to the alternate screen, we must bring most of its
1860 * configuration from the main screen and erase the contents of the
1861 * alternate screen completely. (This is even true if we're already
1862 * on it! Blame xterm.)
1864 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
1871 reset = FALSE; /* do no weird resetting if which==0 */
1873 if (which != term->alt_which) {
1874 term->alt_which = which;
1876 ttr = term->alt_screen;
1877 term->alt_screen = term->screen;
1879 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
1881 if (!reset && !keep_cur_pos)
1882 term->curs.x = term->alt_x;
1885 if (!reset && !keep_cur_pos)
1886 term->curs.y = term->alt_y;
1889 if (!reset) term->marg_t = term->alt_t;
1892 if (!reset) term->marg_b = term->alt_b;
1895 if (!reset) term->dec_om = term->alt_om;
1898 if (!reset) term->wrap = term->alt_wrap;
1901 if (!reset) term->wrapnext = term->alt_wnext;
1902 term->alt_wnext = t;
1904 if (!reset) term->insert = term->alt_ins;
1907 if (!reset) term->cset = term->alt_cset;
1910 if (!reset) term->utf = term->alt_utf;
1913 if (!reset) term->sco_acs = term->alt_sco_acs;
1914 term->alt_sco_acs = t;
1916 tp = term->savecurs;
1917 if (!reset && !keep_cur_pos)
1918 term->savecurs = term->alt_savecurs;
1919 term->alt_savecurs = tp;
1920 t = term->save_cset;
1921 if (!reset && !keep_cur_pos)
1922 term->save_cset = term->alt_save_cset;
1923 term->alt_save_cset = t;
1924 t = term->save_csattr;
1925 if (!reset && !keep_cur_pos)
1926 term->save_csattr = term->alt_save_csattr;
1927 term->alt_save_csattr = t;
1928 t = term->save_attr;
1929 if (!reset && !keep_cur_pos)
1930 term->save_attr = term->alt_save_attr;
1931 term->alt_save_attr = t;
1933 if (!reset && !keep_cur_pos)
1934 term->save_utf = term->alt_save_utf;
1935 term->alt_save_utf = t;
1936 t = term->save_wnext;
1937 if (!reset && !keep_cur_pos)
1938 term->save_wnext = term->alt_save_wnext;
1939 term->alt_save_wnext = t;
1940 t = term->save_sco_acs;
1941 if (!reset && !keep_cur_pos)
1942 term->save_sco_acs = term->alt_save_sco_acs;
1943 term->alt_save_sco_acs = t;
1946 if (reset && term->screen) {
1948 * Yes, this _is_ supposed to honour background-colour-erase.
1950 erase_lots(term, FALSE, TRUE, TRUE);
1955 * Update the scroll bar.
1957 static void update_sbar(Terminal *term)
1959 int nscroll = sblines(term);
1960 set_sbar(term->frontend, nscroll + term->rows,
1961 nscroll + term->disptop, term->rows);
1965 * Check whether the region bounded by the two pointers intersects
1966 * the scroll region, and de-select the on-screen selection if so.
1968 static void check_selection(Terminal *term, pos from, pos to)
1970 if (poslt(from, term->selend) && poslt(term->selstart, to))
1975 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1976 * for backward.) `sb' is TRUE if the scrolling is permitted to
1977 * affect the scrollback buffer.
1979 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
1982 int i, seltop, scrollwinsize;
1983 #ifdef OPTIMISE_SCROLL
1984 int olddisptop, shift;
1985 #endif /* OPTIMISE_SCROLL */
1987 if (topline != 0 || term->alt_which != 0)
1990 #ifdef OPTIMISE_SCROLL
1991 olddisptop = term->disptop;
1993 #endif /* OPTIMISE_SCROLL */
1995 scrollwinsize = botline - topline + 1;
1999 if (lines > scrollwinsize)
2000 lines = scrollwinsize;
2001 while (lines-- > 0) {
2002 line = delpos234(term->screen, botline);
2003 resizeline(term, line, term->cols);
2004 for (i = 0; i < term->cols; i++)
2005 copy_termchar(line, i, &term->erase_char);
2006 line->lattr = LATTR_NORM;
2007 addpos234(term->screen, line, topline);
2009 if (term->selstart.y >= topline && term->selstart.y <= botline) {
2011 if (term->selstart.y > botline) {
2012 term->selstart.y = botline + 1;
2013 term->selstart.x = 0;
2016 if (term->selend.y >= topline && term->selend.y <= botline) {
2018 if (term->selend.y > botline) {
2019 term->selend.y = botline + 1;
2025 if (lines > scrollwinsize)
2026 lines = scrollwinsize;
2027 while (lines-- > 0) {
2028 line = delpos234(term->screen, topline);
2029 #ifdef TERM_CC_DIAGS
2032 if (sb && term->savelines > 0) {
2033 int sblen = count234(term->scrollback);
2035 * We must add this line to the scrollback. We'll
2036 * remove a line from the top of the scrollback if
2037 * the scrollback is full.
2039 if (sblen == term->savelines) {
2040 unsigned char *cline;
2043 cline = delpos234(term->scrollback, 0);
2046 term->tempsblines += 1;
2048 addpos234(term->scrollback, compressline(line), sblen);
2050 /* now `line' itself can be reused as the bottom line */
2053 * If the user is currently looking at part of the
2054 * scrollback, and they haven't enabled any options
2055 * that are going to reset the scrollback as a
2056 * result of this movement, then the chances are
2057 * they'd like to keep looking at the same line. So
2058 * we move their viewpoint at the same rate as the
2059 * scroll, at least until their viewpoint hits the
2060 * top end of the scrollback buffer, at which point
2061 * we don't have the choice any more.
2063 * Thanks to Jan Holmen Holsten for the idea and
2064 * initial implementation.
2066 if (term->disptop > -term->savelines && term->disptop < 0)
2069 resizeline(term, line, term->cols);
2070 for (i = 0; i < term->cols; i++)
2071 copy_termchar(line, i, &term->erase_char);
2072 line->lattr = LATTR_NORM;
2073 addpos234(term->screen, line, botline);
2076 * If the selection endpoints move into the scrollback,
2077 * we keep them moving until they hit the top. However,
2078 * of course, if the line _hasn't_ moved into the
2079 * scrollback then we don't do this, and cut them off
2080 * at the top of the scroll region.
2082 * This applies to selstart and selend (for an existing
2083 * selection), and also selanchor (for one being
2084 * selected as we speak).
2086 seltop = sb ? -term->savelines : topline;
2088 if (term->selstate != NO_SELECTION) {
2089 if (term->selstart.y >= seltop &&
2090 term->selstart.y <= botline) {
2092 if (term->selstart.y < seltop) {
2093 term->selstart.y = seltop;
2094 term->selstart.x = 0;
2097 if (term->selend.y >= seltop && term->selend.y <= botline) {
2099 if (term->selend.y < seltop) {
2100 term->selend.y = seltop;
2104 if (term->selanchor.y >= seltop &&
2105 term->selanchor.y <= botline) {
2106 term->selanchor.y--;
2107 if (term->selanchor.y < seltop) {
2108 term->selanchor.y = seltop;
2109 term->selanchor.x = 0;
2115 #ifdef OPTIMISE_SCROLL
2116 shift += term->disptop - olddisptop;
2117 if (shift < term->rows && shift > -term->rows && shift != 0)
2118 scroll_display(term, topline, botline, shift);
2119 #endif /* OPTIMISE_SCROLL */
2122 #ifdef OPTIMISE_SCROLL
2124 * Add a scroll of a region on the screen into the pending scroll list.
2125 * `lines' is +ve for scrolling forward, -ve for backward.
2127 * If the scroll is on the same area as the last scroll in the list,
2130 static void save_scroll(Terminal *term, int topline, int botline, int lines)
2132 struct scrollregion *newscroll;
2133 if (term->scrolltail &&
2134 term->scrolltail->topline == topline &&
2135 term->scrolltail->botline == botline) {
2136 term->scrolltail->lines += lines;
2138 newscroll = snew(struct scrollregion);
2139 newscroll->topline = topline;
2140 newscroll->botline = botline;
2141 newscroll->lines = lines;
2142 newscroll->next = NULL;
2144 if (!term->scrollhead)
2145 term->scrollhead = newscroll;
2147 term->scrolltail->next = newscroll;
2148 term->scrolltail = newscroll;
2153 * Scroll the physical display, and our conception of it in disptext.
2155 static void scroll_display(Terminal *term, int topline, int botline, int lines)
2157 int distance, nlines, i, j;
2159 distance = lines > 0 ? lines : -lines;
2160 nlines = botline - topline + 1 - distance;
2162 for (i = 0; i < nlines; i++)
2163 for (j = 0; j < term->cols; j++)
2164 copy_termchar(term->disptext[i], j,
2165 term->disptext[i+distance]->chars+j);
2166 if (term->dispcursy >= 0 &&
2167 term->dispcursy >= topline + distance &&
2168 term->dispcursy < topline + distance + nlines)
2169 term->dispcursy -= distance;
2170 for (i = 0; i < distance; i++)
2171 for (j = 0; j < term->cols; j++)
2172 term->disptext[nlines+i]->chars[j].attr |= ATTR_INVALID;
2174 for (i = nlines; i-- ;)
2175 for (j = 0; j < term->cols; j++)
2176 copy_termchar(term->disptext[i+distance], j,
2177 term->disptext[i]->chars+j);
2178 if (term->dispcursy >= 0 &&
2179 term->dispcursy >= topline &&
2180 term->dispcursy < topline + nlines)
2181 term->dispcursy += distance;
2182 for (i = 0; i < distance; i++)
2183 for (j = 0; j < term->cols; j++)
2184 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
2186 save_scroll(term, topline, botline, lines);
2188 #endif /* OPTIMISE_SCROLL */
2191 * Move the cursor to a given position, clipping at boundaries. We
2192 * may or may not want to clip at the scroll margin: marg_clip is 0
2193 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
2194 * even _being_ outside the margins.
2196 static void move(Terminal *term, int x, int y, int marg_clip)
2200 if (x >= term->cols)
2203 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
2206 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
2212 if (y >= term->rows)
2216 term->wrapnext = FALSE;
2220 * Save or restore the cursor and SGR mode.
2222 static void save_cursor(Terminal *term, int save)
2225 term->savecurs = term->curs;
2226 term->save_attr = term->curr_attr;
2227 term->save_cset = term->cset;
2228 term->save_utf = term->utf;
2229 term->save_wnext = term->wrapnext;
2230 term->save_csattr = term->cset_attr[term->cset];
2231 term->save_sco_acs = term->sco_acs;
2233 term->curs = term->savecurs;
2234 /* Make sure the window hasn't shrunk since the save */
2235 if (term->curs.x >= term->cols)
2236 term->curs.x = term->cols - 1;
2237 if (term->curs.y >= term->rows)
2238 term->curs.y = term->rows - 1;
2240 term->curr_attr = term->save_attr;
2241 term->cset = term->save_cset;
2242 term->utf = term->save_utf;
2243 term->wrapnext = term->save_wnext;
2245 * wrapnext might reset to False if the x position is no
2246 * longer at the rightmost edge.
2248 if (term->wrapnext && term->curs.x < term->cols-1)
2249 term->wrapnext = FALSE;
2250 term->cset_attr[term->cset] = term->save_csattr;
2251 term->sco_acs = term->save_sco_acs;
2252 set_erase_char(term);
2257 * This function is called before doing _anything_ which affects
2258 * only part of a line of text. It is used to mark the boundary
2259 * between two character positions, and it indicates that some sort
2260 * of effect is going to happen on only one side of that boundary.
2262 * The effect of this function is to check whether a CJK
2263 * double-width character is straddling the boundary, and to remove
2264 * it and replace it with two spaces if so. (Of course, one or
2265 * other of those spaces is then likely to be replaced with
2266 * something else again, as a result of whatever happens next.)
2268 * Also, if the boundary is at the right-hand _edge_ of the screen,
2269 * it implies something deliberate is being done to the rightmost
2270 * column position; hence we must clear LATTR_WRAPPED2.
2272 * The input to the function is the coordinates of the _second_
2273 * character of the pair.
2275 static void check_boundary(Terminal *term, int x, int y)
2279 /* Validate input coordinates, just in case. */
2280 if (x == 0 || x > term->cols)
2283 ldata = scrlineptr(y);
2284 if (x == term->cols) {
2285 ldata->lattr &= ~LATTR_WRAPPED2;
2287 if (ldata->chars[x].chr == UCSWIDE) {
2288 clear_cc(ldata, x-1);
2290 ldata->chars[x-1].chr = ' ' | CSET_ASCII;
2291 ldata->chars[x] = ldata->chars[x-1];
2297 * Erase a large portion of the screen: the whole screen, or the
2298 * whole line, or parts thereof.
2300 static void erase_lots(Terminal *term,
2301 int line_only, int from_begin, int to_end)
2305 int erasing_lines_from_top = 0;
2308 start.y = term->curs.y;
2310 end.y = term->curs.y + 1;
2312 erase_lattr = FALSE;
2327 if (!from_begin || !to_end)
2328 check_boundary(term, term->curs.x, term->curs.y);
2329 check_selection(term, start, end);
2331 /* Clear screen also forces a full window redraw, just in case. */
2332 if (start.y == 0 && start.x == 0 && end.y == term->rows)
2333 term_invalidate(term);
2335 /* Lines scrolled away shouldn't be brought back on if the terminal
2337 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
2338 erasing_lines_from_top = 1;
2340 if (term->erase_to_scrollback && erasing_lines_from_top) {
2341 /* If it's a whole number of lines, starting at the top, and
2342 * we're fully erasing them, erase by scrolling and keep the
2343 * lines in the scrollback. */
2344 int scrolllines = end.y;
2345 if (end.y == term->rows) {
2346 /* Shrink until we find a non-empty row.*/
2347 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
2349 if (scrolllines > 0)
2350 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
2352 termline *ldata = scrlineptr(start.y);
2353 while (poslt(start, end)) {
2354 if (start.x == term->cols) {
2356 ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
2358 ldata->lattr = LATTR_NORM;
2360 copy_termchar(ldata, start.x, &term->erase_char);
2362 if (incpos(start) && start.y < term->rows) {
2363 ldata = scrlineptr(start.y);
2368 /* After an erase of lines from the top of the screen, we shouldn't
2369 * bring the lines back again if the terminal enlarges (since the user or
2370 * application has explictly thrown them away). */
2371 if (erasing_lines_from_top && !(term->alt_which))
2372 term->tempsblines = 0;
2376 * Insert or delete characters within the current line. n is +ve if
2377 * insertion is desired, and -ve for deletion.
2379 static void insch(Terminal *term, int n)
2381 int dir = (n < 0 ? -1 : +1);
2386 n = (n < 0 ? -n : n);
2387 if (n > term->cols - term->curs.x)
2388 n = term->cols - term->curs.x;
2389 m = term->cols - term->curs.x - n;
2392 * We must de-highlight the selection if it overlaps any part of
2393 * the region affected by this operation, i.e. the region from the
2394 * current cursor position to end-of-line, _unless_ the entirety
2395 * of the selection is going to be moved to the left or right by
2396 * this operation but otherwise unchanged, in which case we can
2397 * simply move the highlight with the text.
2399 eol.y = term->curs.y;
2401 if (poslt(term->curs, term->selend) && poslt(term->selstart, eol)) {
2402 pos okstart = term->curs;
2405 /* Insertion: n characters at EOL will be splatted. */
2408 /* Deletion: n characters at cursor position will be splatted. */
2411 if (posle(okstart, term->selstart) && posle(term->selend, okend)) {
2412 /* Selection is contained entirely in the interval
2413 * [okstart,okend), so we need only adjust the selection
2415 term->selstart.x += dir * n;
2416 term->selend.x += dir * n;
2417 assert(term->selstart.x >= term->curs.x);
2418 assert(term->selstart.x < term->cols);
2419 assert(term->selend.x > term->curs.x);
2420 assert(term->selend.x <= term->cols);
2422 /* Selection is not wholly contained in that interval, so
2423 * we must unhighlight it. */
2428 check_boundary(term, term->curs.x, term->curs.y);
2430 check_boundary(term, term->curs.x + n, term->curs.y);
2431 ldata = scrlineptr(term->curs.y);
2433 for (j = 0; j < m; j++)
2434 move_termchar(ldata,
2435 ldata->chars + term->curs.x + j,
2436 ldata->chars + term->curs.x + j + n);
2438 copy_termchar(ldata, term->curs.x + m++, &term->erase_char);
2441 move_termchar(ldata,
2442 ldata->chars + term->curs.x + j + n,
2443 ldata->chars + term->curs.x + j);
2445 copy_termchar(ldata, term->curs.x + n, &term->erase_char);
2450 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2451 * whether the mode is a DEC private one or a normal one.)
2453 static void toggle_mode(Terminal *term, int mode, int query, int state)
2457 case 1: /* DECCKM: application cursor keys */
2458 term->app_cursor_keys = state;
2460 case 2: /* DECANM: VT52 mode */
2461 term->vt52_mode = !state;
2462 if (term->vt52_mode) {
2463 term->blink_is_real = FALSE;
2464 term->vt52_bold = FALSE;
2466 term->blink_is_real = term->blinktext;
2468 term_schedule_tblink(term);
2470 case 3: /* DECCOLM: 80/132 columns */
2472 if (!term->no_remote_resize)
2473 request_resize(term->frontend, state ? 132 : 80, term->rows);
2474 term->reset_132 = state;
2475 term->alt_t = term->marg_t = 0;
2476 term->alt_b = term->marg_b = term->rows - 1;
2477 move(term, 0, 0, 0);
2478 erase_lots(term, FALSE, TRUE, TRUE);
2480 case 5: /* DECSCNM: reverse video */
2482 * Toggle reverse video. If we receive an OFF within the
2483 * visual bell timeout period after an ON, we trigger an
2484 * effective visual bell, so that ESC[?5hESC[?5l will
2485 * always be an actually _visible_ visual bell.
2487 if (term->rvideo && !state) {
2488 /* This is an OFF, so set up a vbell */
2489 term_schedule_vbell(term, TRUE, term->rvbell_startpoint);
2490 } else if (!term->rvideo && state) {
2491 /* This is an ON, so we notice the time and save it. */
2492 term->rvbell_startpoint = GETTICKCOUNT();
2494 term->rvideo = state;
2495 seen_disp_event(term);
2497 case 6: /* DECOM: DEC origin mode */
2498 term->dec_om = state;
2500 case 7: /* DECAWM: auto wrap */
2503 case 8: /* DECARM: auto key repeat */
2504 term->repeat_off = !state;
2506 case 10: /* DECEDM: set local edit mode */
2507 term->term_editing = state;
2508 if (term->ldisc) /* cause ldisc to notice changes */
2509 ldisc_send(term->ldisc, NULL, 0, 0);
2511 case 25: /* DECTCEM: enable/disable cursor */
2512 compatibility2(OTHER, VT220);
2513 term->cursor_on = state;
2514 seen_disp_event(term);
2516 case 47: /* alternate screen */
2517 compatibility(OTHER);
2519 swap_screen(term, term->no_alt_screen ? 0 : state, FALSE, FALSE);
2520 if (term->scroll_on_disp)
2523 case 1000: /* xterm mouse 1 (normal) */
2524 term->xterm_mouse = state ? 1 : 0;
2525 set_raw_mouse_mode(term->frontend, state);
2527 case 1002: /* xterm mouse 2 (inc. button drags) */
2528 term->xterm_mouse = state ? 2 : 0;
2529 set_raw_mouse_mode(term->frontend, state);
2531 case 1006: /* xterm extended mouse */
2532 term->xterm_extended_mouse = state ? 1 : 0;
2534 case 1015: /* urxvt extended mouse */
2535 term->urxvt_extended_mouse = state ? 1 : 0;
2537 case 1047: /* alternate screen */
2538 compatibility(OTHER);
2540 swap_screen(term, term->no_alt_screen ? 0 : state, TRUE, TRUE);
2541 if (term->scroll_on_disp)
2544 case 1048: /* save/restore cursor */
2545 if (!term->no_alt_screen)
2546 save_cursor(term, state);
2547 if (!state) seen_disp_event(term);
2549 case 1049: /* cursor & alternate screen */
2550 if (state && !term->no_alt_screen)
2551 save_cursor(term, state);
2552 if (!state) seen_disp_event(term);
2553 compatibility(OTHER);
2555 swap_screen(term, term->no_alt_screen ? 0 : state, TRUE, FALSE);
2556 if (!state && !term->no_alt_screen)
2557 save_cursor(term, state);
2558 if (term->scroll_on_disp)
2561 case 2004: /* xterm bracketed paste */
2562 term->bracketed_paste = state ? TRUE : FALSE;
2566 case 4: /* IRM: set insert mode */
2567 compatibility(VT102);
2568 term->insert = state;
2570 case 12: /* SRM: set echo mode */
2571 term->term_echoing = !state;
2572 if (term->ldisc) /* cause ldisc to notice changes */
2573 ldisc_send(term->ldisc, NULL, 0, 0);
2575 case 20: /* LNM: Return sends ... */
2576 term->cr_lf_return = state;
2578 case 34: /* WYULCURM: Make cursor BIG */
2579 compatibility2(OTHER, VT220);
2580 term->big_cursor = !state;
2585 * Process an OSC sequence: set window title or icon name.
2587 static void do_osc(Terminal *term)
2590 while (term->osc_strlen--)
2591 term->wordness[(unsigned char)
2592 term->osc_string[term->osc_strlen]] = term->esc_args[0];
2594 term->osc_string[term->osc_strlen] = '\0';
2595 switch (term->esc_args[0]) {
2598 if (!term->no_remote_wintitle)
2599 set_icon(term->frontend, term->osc_string);
2600 if (term->esc_args[0] == 1)
2602 /* fall through: parameter 0 means set both */
2605 if (!term->no_remote_wintitle)
2606 set_title(term->frontend, term->osc_string);
2613 * ANSI printing routines.
2615 static void term_print_setup(Terminal *term, char *printer)
2617 bufchain_clear(&term->printer_buf);
2618 term->print_job = printer_start_job(printer);
2620 static void term_print_flush(Terminal *term)
2625 while ((size = bufchain_size(&term->printer_buf)) > 5) {
2626 bufchain_prefix(&term->printer_buf, &data, &len);
2629 printer_job_data(term->print_job, data, len);
2630 bufchain_consume(&term->printer_buf, len);
2633 static void term_print_finish(Terminal *term)
2639 if (!term->printing && !term->only_printing)
2640 return; /* we need do nothing */
2642 term_print_flush(term);
2643 while ((size = bufchain_size(&term->printer_buf)) > 0) {
2644 bufchain_prefix(&term->printer_buf, &data, &len);
2646 if (c == '\033' || c == '\233') {
2647 bufchain_consume(&term->printer_buf, size);
2650 printer_job_data(term->print_job, &c, 1);
2651 bufchain_consume(&term->printer_buf, 1);
2654 printer_finish_job(term->print_job);
2655 term->print_job = NULL;
2656 term->printing = term->only_printing = FALSE;
2660 * Remove everything currently in `inbuf' and stick it up on the
2661 * in-memory display. There's a big state machine in here to
2662 * process escape sequences...
2664 static void term_out(Terminal *term)
2668 unsigned char localbuf[256], *chars;
2673 chars = NULL; /* placate compiler warnings */
2674 while (nchars > 0 || unget != -1 || bufchain_size(&term->inbuf) > 0) {
2678 bufchain_prefix(&term->inbuf, &ret, &nchars);
2679 if (nchars > sizeof(localbuf))
2680 nchars = sizeof(localbuf);
2681 memcpy(localbuf, ret, nchars);
2682 bufchain_consume(&term->inbuf, nchars);
2684 assert(chars != NULL);
2690 * Optionally log the session traffic to a file. Useful for
2691 * debugging and possibly also useful for actual logging.
2693 if (term->logtype == LGTYP_DEBUG && term->logctx)
2694 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
2700 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2701 * be able to display 8-bit characters, but I'll let that go 'cause
2706 * If we're printing, add the character to the printer
2709 if (term->printing) {
2710 bufchain_add(&term->printer_buf, &c, 1);
2713 * If we're in print-only mode, we use a much simpler
2714 * state machine designed only to recognise the ESC[4i
2715 * termination sequence.
2717 if (term->only_printing) {
2719 term->print_state = 1;
2720 else if (c == (unsigned char)'\233')
2721 term->print_state = 2;
2722 else if (c == '[' && term->print_state == 1)
2723 term->print_state = 2;
2724 else if (c == '4' && term->print_state == 2)
2725 term->print_state = 3;
2726 else if (c == 'i' && term->print_state == 3)
2727 term->print_state = 4;
2729 term->print_state = 0;
2730 if (term->print_state == 4) {
2731 term_print_finish(term);
2737 /* First see about all those translations. */
2738 if (term->termstate == TOPLEVEL) {
2740 switch (term->utf_state) {
2743 /* UTF-8 must be stateless so we ignore iso2022. */
2744 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2745 c = term->ucsdata->unitab_ctrl[c];
2746 else c = ((unsigned char)c) | CSET_ASCII;
2748 } else if ((c & 0xe0) == 0xc0) {
2749 term->utf_size = term->utf_state = 1;
2750 term->utf_char = (c & 0x1f);
2751 } else if ((c & 0xf0) == 0xe0) {
2752 term->utf_size = term->utf_state = 2;
2753 term->utf_char = (c & 0x0f);
2754 } else if ((c & 0xf8) == 0xf0) {
2755 term->utf_size = term->utf_state = 3;
2756 term->utf_char = (c & 0x07);
2757 } else if ((c & 0xfc) == 0xf8) {
2758 term->utf_size = term->utf_state = 4;
2759 term->utf_char = (c & 0x03);
2760 } else if ((c & 0xfe) == 0xfc) {
2761 term->utf_size = term->utf_state = 5;
2762 term->utf_char = (c & 0x01);
2773 if ((c & 0xC0) != 0x80) {
2776 term->utf_state = 0;
2779 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
2780 if (--term->utf_state)
2785 /* Is somebody trying to be evil! */
2787 (c < 0x800 && term->utf_size >= 2) ||
2788 (c < 0x10000 && term->utf_size >= 3) ||
2789 (c < 0x200000 && term->utf_size >= 4) ||
2790 (c < 0x4000000 && term->utf_size >= 5))
2793 /* Unicode line separator and paragraph separator are CR-LF */
2794 if (c == 0x2028 || c == 0x2029)
2797 /* High controls are probably a Baaad idea too. */
2801 /* The UTF-16 surrogates are not nice either. */
2802 /* The standard give the option of decoding these:
2803 * I don't want to! */
2804 if (c >= 0xD800 && c < 0xE000)
2807 /* ISO 10646 characters now limited to UTF-16 range. */
2811 /* This is currently a TagPhobic application.. */
2812 if (c >= 0xE0000 && c <= 0xE007F)
2815 /* U+FEFF is best seen as a null. */
2818 /* But U+FFFE is an error. */
2819 if (c == 0xFFFE || c == 0xFFFF)
2824 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2825 else if(term->sco_acs &&
2826 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
2828 if (term->sco_acs == 2) c |= 0x80;
2831 switch (term->cset_attr[term->cset]) {
2833 * Linedraw characters are different from 'ESC ( B'
2834 * only for a small range. For ones outside that
2835 * range, make sure we use the same font as well as
2836 * the same encoding.
2839 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2840 c = term->ucsdata->unitab_ctrl[c];
2842 c = ((unsigned char) c) | CSET_LINEDRW;
2846 /* If UK-ASCII, make the '#' a LineDraw Pound */
2848 c = '}' | CSET_LINEDRW;
2851 /*FALLTHROUGH*/ case CSET_ASCII:
2852 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2853 c = term->ucsdata->unitab_ctrl[c];
2855 c = ((unsigned char) c) | CSET_ASCII;
2858 if (c>=' ') c = ((unsigned char)c) | CSET_SCOACS;
2865 * How about C1 controls?
2866 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2868 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
2869 !term->vt52_mode && has_compat(VT220)) {
2873 term->termstate = SEEN_ESC;
2874 term->esc_query = FALSE;
2875 c = '@' + (c & 0x1F);
2879 /* Or the GL control. */
2880 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
2881 if (term->curs.x && !term->wrapnext)
2883 term->wrapnext = FALSE;
2884 /* destructive backspace might be disabled */
2885 if (!term->no_dbackspace) {
2886 check_boundary(term, term->curs.x, term->curs.y);
2887 check_boundary(term, term->curs.x+1, term->curs.y);
2888 copy_termchar(scrlineptr(term->curs.y),
2889 term->curs.x, &term->erase_char);
2892 /* Or normal C0 controls. */
2893 if ((c & ~0x1F) == 0 && term->termstate < DO_CTRLS) {
2895 case '\005': /* ENQ: terminal type query */
2897 * Strictly speaking this is VT100 but a VT100 defaults to
2898 * no response. Other terminals respond at their option.
2900 * Don't put a CR in the default string as this tends to
2901 * upset some weird software.
2903 compatibility(ANSIMIN);
2905 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
2906 term->answerback, term->answerbacklen, 0);
2909 case '\007': /* BEL: Bell */
2911 struct beeptime *newbeep;
2912 unsigned long ticks;
2914 ticks = GETTICKCOUNT();
2916 if (!term->beep_overloaded) {
2917 newbeep = snew(struct beeptime);
2918 newbeep->ticks = ticks;
2919 newbeep->next = NULL;
2920 if (!term->beephead)
2921 term->beephead = newbeep;
2923 term->beeptail->next = newbeep;
2924 term->beeptail = newbeep;
2929 * Throw out any beeps that happened more than
2932 while (term->beephead &&
2933 term->beephead->ticks < ticks - term->bellovl_t) {
2934 struct beeptime *tmp = term->beephead;
2935 term->beephead = tmp->next;
2937 if (!term->beephead)
2938 term->beeptail = NULL;
2942 if (term->bellovl && term->beep_overloaded &&
2943 ticks - term->lastbeep >= (unsigned)term->bellovl_s) {
2945 * If we're currently overloaded and the
2946 * last beep was more than s seconds ago,
2947 * leave overload mode.
2949 term->beep_overloaded = FALSE;
2950 } else if (term->bellovl && !term->beep_overloaded &&
2951 term->nbeeps >= term->bellovl_n) {
2953 * Now, if we have n or more beeps
2954 * remaining in the queue, go into overload
2957 term->beep_overloaded = TRUE;
2959 term->lastbeep = ticks;
2962 * Perform an actual beep if we're not overloaded.
2964 if (!term->bellovl || !term->beep_overloaded) {
2965 do_beep(term->frontend, term->beep);
2967 if (term->beep == BELL_VISUAL) {
2968 term_schedule_vbell(term, FALSE, 0);
2971 seen_disp_event(term);
2974 case '\b': /* BS: Back space */
2975 if (term->curs.x == 0 &&
2976 (term->curs.y == 0 || term->wrap == 0))
2978 else if (term->curs.x == 0 && term->curs.y > 0)
2979 term->curs.x = term->cols - 1, term->curs.y--;
2980 else if (term->wrapnext)
2981 term->wrapnext = FALSE;
2984 seen_disp_event(term);
2986 case '\016': /* LS1: Locking-shift one */
2987 compatibility(VT100);
2990 case '\017': /* LS0: Locking-shift zero */
2991 compatibility(VT100);
2994 case '\033': /* ESC: Escape */
2995 if (term->vt52_mode)
2996 term->termstate = VT52_ESC;
2998 compatibility(ANSIMIN);
2999 term->termstate = SEEN_ESC;
3000 term->esc_query = FALSE;
3003 case '\015': /* CR: Carriage return */
3005 term->wrapnext = FALSE;
3006 seen_disp_event(term);
3008 if (term->crhaslf) {
3009 if (term->curs.y == term->marg_b)
3010 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3011 else if (term->curs.y < term->rows - 1)
3015 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
3017 case '\014': /* FF: Form feed */
3018 if (has_compat(SCOANSI)) {
3019 move(term, 0, 0, 0);
3020 erase_lots(term, FALSE, FALSE, TRUE);
3021 if (term->scroll_on_disp)
3023 term->wrapnext = FALSE;
3024 seen_disp_event(term);
3027 case '\013': /* VT: Line tabulation */
3028 compatibility(VT100);
3029 case '\012': /* LF: Line feed */
3030 if (term->curs.y == term->marg_b)
3031 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3032 else if (term->curs.y < term->rows - 1)
3036 term->wrapnext = FALSE;
3037 seen_disp_event(term);
3039 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
3041 case '\t': /* HT: Character tabulation */
3043 pos old_curs = term->curs;
3044 termline *ldata = scrlineptr(term->curs.y);
3048 } while (term->curs.x < term->cols - 1 &&
3049 !term->tabs[term->curs.x]);
3051 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) {
3052 if (term->curs.x >= term->cols / 2)
3053 term->curs.x = term->cols / 2 - 1;
3055 if (term->curs.x >= term->cols)
3056 term->curs.x = term->cols - 1;
3059 check_selection(term, old_curs, term->curs);
3061 seen_disp_event(term);
3065 switch (term->termstate) {
3067 /* Only graphic characters get this far;
3068 * ctrls are stripped above */
3070 termline *cline = scrlineptr(term->curs.y);
3075 width = (term->cjk_ambig_wide ?
3076 mk_wcwidth_cjk((unsigned int) c) :
3077 mk_wcwidth((unsigned int) c));
3079 if (term->wrapnext && term->wrap && width > 0) {
3080 cline->lattr |= LATTR_WRAPPED;
3081 if (term->curs.y == term->marg_b)
3082 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3083 else if (term->curs.y < term->rows - 1)
3086 term->wrapnext = FALSE;
3087 cline = scrlineptr(term->curs.y);
3089 if (term->insert && width > 0)
3091 if (term->selstate != NO_SELECTION) {
3092 pos cursplus = term->curs;
3094 check_selection(term, term->curs, cursplus);
3096 if (((c & CSET_MASK) == CSET_ASCII ||
3097 (c & CSET_MASK) == 0) &&
3099 logtraffic(term->logctx, (unsigned char) c,
3105 * If we're about to display a double-width
3106 * character starting in the rightmost
3107 * column, then we do something special
3108 * instead. We must print a space in the
3109 * last column of the screen, then wrap;
3110 * and we also set LATTR_WRAPPED2 which
3111 * instructs subsequent cut-and-pasting not
3112 * only to splice this line to the one
3113 * after it, but to ignore the space in the
3114 * last character position as well.
3115 * (Because what was actually output to the
3116 * terminal was presumably just a sequence
3117 * of CJK characters, and we don't want a
3118 * space to be pasted in the middle of
3119 * those just because they had the
3120 * misfortune to start in the wrong parity
3121 * column. xterm concurs.)
3123 check_boundary(term, term->curs.x, term->curs.y);
3124 check_boundary(term, term->curs.x+2, term->curs.y);
3125 if (term->curs.x == term->cols-1) {
3126 copy_termchar(cline, term->curs.x,
3128 cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2;
3129 if (term->curs.y == term->marg_b)
3130 scroll(term, term->marg_t, term->marg_b,
3132 else if (term->curs.y < term->rows - 1)
3135 cline = scrlineptr(term->curs.y);
3136 /* Now we must check_boundary again, of course. */
3137 check_boundary(term, term->curs.x, term->curs.y);
3138 check_boundary(term, term->curs.x+2, term->curs.y);
3142 clear_cc(cline, term->curs.x);
3143 cline->chars[term->curs.x].chr = c;
3144 cline->chars[term->curs.x].attr = term->curr_attr;
3149 clear_cc(cline, term->curs.x);
3150 cline->chars[term->curs.x].chr = UCSWIDE;
3151 cline->chars[term->curs.x].attr = term->curr_attr;
3155 check_boundary(term, term->curs.x, term->curs.y);
3156 check_boundary(term, term->curs.x+1, term->curs.y);
3159 clear_cc(cline, term->curs.x);
3160 cline->chars[term->curs.x].chr = c;
3161 cline->chars[term->curs.x].attr = term->curr_attr;
3165 if (term->curs.x > 0) {
3166 int x = term->curs.x - 1;
3168 /* If we're in wrapnext state, the character
3169 * to combine with is _here_, not to our left. */
3174 * If the previous character is
3175 * UCSWIDE, back up another one.
3177 if (cline->chars[x].chr == UCSWIDE) {
3182 add_cc(cline, x, c);
3183 seen_disp_event(term);
3190 if (term->curs.x == term->cols) {
3192 term->wrapnext = TRUE;
3193 if (term->wrap && term->vt52_mode) {
3194 cline->lattr |= LATTR_WRAPPED;
3195 if (term->curs.y == term->marg_b)
3196 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3197 else if (term->curs.y < term->rows - 1)
3200 term->wrapnext = FALSE;
3203 seen_disp_event(term);
3209 * This state is virtually identical to SEEN_ESC, with the
3210 * exception that we have an OSC sequence in the pipeline,
3211 * and _if_ we see a backslash, we process it.
3215 term->termstate = TOPLEVEL;
3218 /* else fall through */
3220 if (c >= ' ' && c <= '/') {
3221 if (term->esc_query)
3222 term->esc_query = -1;
3224 term->esc_query = c;
3227 term->termstate = TOPLEVEL;
3228 switch (ANSI(c, term->esc_query)) {
3229 case '[': /* enter CSI mode */
3230 term->termstate = SEEN_CSI;
3231 term->esc_nargs = 1;
3232 term->esc_args[0] = ARG_DEFAULT;
3233 term->esc_query = FALSE;
3235 case ']': /* OSC: xterm escape sequences */
3236 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3237 compatibility(OTHER);
3238 term->termstate = SEEN_OSC;
3239 term->esc_args[0] = 0;
3241 case '7': /* DECSC: save cursor */
3242 compatibility(VT100);
3243 save_cursor(term, TRUE);
3245 case '8': /* DECRC: restore cursor */
3246 compatibility(VT100);
3247 save_cursor(term, FALSE);
3248 seen_disp_event(term);
3250 case '=': /* DECKPAM: Keypad application mode */
3251 compatibility(VT100);
3252 term->app_keypad_keys = TRUE;
3254 case '>': /* DECKPNM: Keypad numeric mode */
3255 compatibility(VT100);
3256 term->app_keypad_keys = FALSE;
3258 case 'D': /* IND: exactly equivalent to LF */
3259 compatibility(VT100);
3260 if (term->curs.y == term->marg_b)
3261 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3262 else if (term->curs.y < term->rows - 1)
3264 term->wrapnext = FALSE;
3265 seen_disp_event(term);
3267 case 'E': /* NEL: exactly equivalent to CR-LF */
3268 compatibility(VT100);
3270 if (term->curs.y == term->marg_b)
3271 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3272 else if (term->curs.y < term->rows - 1)
3274 term->wrapnext = FALSE;
3275 seen_disp_event(term);
3277 case 'M': /* RI: reverse index - backwards LF */
3278 compatibility(VT100);
3279 if (term->curs.y == term->marg_t)
3280 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
3281 else if (term->curs.y > 0)
3283 term->wrapnext = FALSE;
3284 seen_disp_event(term);
3286 case 'Z': /* DECID: terminal type query */
3287 compatibility(VT100);
3289 ldisc_send(term->ldisc, term->id_string,
3290 strlen(term->id_string), 0);
3292 case 'c': /* RIS: restore power-on settings */
3293 compatibility(VT100);
3294 power_on(term, TRUE);
3295 if (term->ldisc) /* cause ldisc to notice changes */
3296 ldisc_send(term->ldisc, NULL, 0, 0);
3297 if (term->reset_132) {
3298 if (!term->no_remote_resize)
3299 request_resize(term->frontend, 80, term->rows);
3300 term->reset_132 = 0;
3302 if (term->scroll_on_disp)
3304 seen_disp_event(term);
3306 case 'H': /* HTS: set a tab */
3307 compatibility(VT100);
3308 term->tabs[term->curs.x] = TRUE;
3311 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3312 compatibility(VT100);
3318 for (i = 0; i < term->rows; i++) {
3319 ldata = scrlineptr(i);
3320 for (j = 0; j < term->cols; j++) {
3321 copy_termchar(ldata, j,
3322 &term->basic_erase_char);
3323 ldata->chars[j].chr = 'E';
3325 ldata->lattr = LATTR_NORM;
3327 if (term->scroll_on_disp)
3329 seen_disp_event(term);
3330 scrtop.x = scrtop.y = 0;
3332 scrbot.y = term->rows;
3333 check_selection(term, scrtop, scrbot);
3337 case ANSI('3', '#'):
3338 case ANSI('4', '#'):
3339 case ANSI('5', '#'):
3340 case ANSI('6', '#'):
3341 compatibility(VT100);
3345 switch (ANSI(c, term->esc_query)) {
3346 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3349 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3352 case ANSI('5', '#'): /* DECSWL: normal */
3353 nlattr = LATTR_NORM;
3355 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3356 nlattr = LATTR_WIDE;
3359 scrlineptr(term->curs.y)->lattr = nlattr;
3362 /* GZD4: G0 designate 94-set */
3363 case ANSI('A', '('):
3364 compatibility(VT100);
3365 if (!term->no_remote_charset)
3366 term->cset_attr[0] = CSET_GBCHR;
3368 case ANSI('B', '('):
3369 compatibility(VT100);
3370 if (!term->no_remote_charset)
3371 term->cset_attr[0] = CSET_ASCII;
3373 case ANSI('0', '('):
3374 compatibility(VT100);
3375 if (!term->no_remote_charset)
3376 term->cset_attr[0] = CSET_LINEDRW;
3378 case ANSI('U', '('):
3379 compatibility(OTHER);
3380 if (!term->no_remote_charset)
3381 term->cset_attr[0] = CSET_SCOACS;
3383 /* G1D4: G1-designate 94-set */
3384 case ANSI('A', ')'):
3385 compatibility(VT100);
3386 if (!term->no_remote_charset)
3387 term->cset_attr[1] = CSET_GBCHR;
3389 case ANSI('B', ')'):
3390 compatibility(VT100);
3391 if (!term->no_remote_charset)
3392 term->cset_attr[1] = CSET_ASCII;
3394 case ANSI('0', ')'):
3395 compatibility(VT100);
3396 if (!term->no_remote_charset)
3397 term->cset_attr[1] = CSET_LINEDRW;
3399 case ANSI('U', ')'):
3400 compatibility(OTHER);
3401 if (!term->no_remote_charset)
3402 term->cset_attr[1] = CSET_SCOACS;
3404 /* DOCS: Designate other coding system */
3405 case ANSI('8', '%'): /* Old Linux code */
3406 case ANSI('G', '%'):
3407 compatibility(OTHER);
3408 if (!term->no_remote_charset)
3411 case ANSI('@', '%'):
3412 compatibility(OTHER);
3413 if (!term->no_remote_charset)
3419 term->termstate = TOPLEVEL; /* default */
3421 if (term->esc_nargs <= ARGS_MAX) {
3422 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
3423 term->esc_args[term->esc_nargs - 1] = 0;
3424 term->esc_args[term->esc_nargs - 1] =
3425 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
3427 term->termstate = SEEN_CSI;
3428 } else if (c == ';') {
3429 if (term->esc_nargs < ARGS_MAX)
3430 term->esc_args[term->esc_nargs++] = ARG_DEFAULT;
3431 term->termstate = SEEN_CSI;
3432 } else if (c < '@') {
3433 if (term->esc_query)
3434 term->esc_query = -1;
3436 term->esc_query = TRUE;
3438 term->esc_query = c;
3439 term->termstate = SEEN_CSI;
3441 switch (ANSI(c, term->esc_query)) {
3442 case 'A': /* CUU: move up N lines */
3443 move(term, term->curs.x,
3444 term->curs.y - def(term->esc_args[0], 1), 1);
3445 seen_disp_event(term);
3447 case 'e': /* VPR: move down N lines */
3448 compatibility(ANSI);
3450 case 'B': /* CUD: Cursor down */
3451 move(term, term->curs.x,
3452 term->curs.y + def(term->esc_args[0], 1), 1);
3453 seen_disp_event(term);
3455 case ANSI('c', '>'): /* DA: report xterm version */
3456 compatibility(OTHER);
3457 /* this reports xterm version 136 so that VIM can
3458 use the drag messages from the mouse reporting */
3460 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
3462 case 'a': /* HPR: move right N cols */
3463 compatibility(ANSI);
3465 case 'C': /* CUF: Cursor right */
3466 move(term, term->curs.x + def(term->esc_args[0], 1),
3468 seen_disp_event(term);
3470 case 'D': /* CUB: move left N cols */
3471 move(term, term->curs.x - def(term->esc_args[0], 1),
3473 seen_disp_event(term);
3475 case 'E': /* CNL: move down N lines and CR */
3476 compatibility(ANSI);
3478 term->curs.y + def(term->esc_args[0], 1), 1);
3479 seen_disp_event(term);
3481 case 'F': /* CPL: move up N lines and CR */
3482 compatibility(ANSI);
3484 term->curs.y - def(term->esc_args[0], 1), 1);
3485 seen_disp_event(term);
3488 case '`': /* HPA: set horizontal posn */
3489 compatibility(ANSI);
3490 move(term, def(term->esc_args[0], 1) - 1,
3492 seen_disp_event(term);
3494 case 'd': /* VPA: set vertical posn */
3495 compatibility(ANSI);
3496 move(term, term->curs.x,
3497 ((term->dec_om ? term->marg_t : 0) +
3498 def(term->esc_args[0], 1) - 1),
3499 (term->dec_om ? 2 : 0));
3500 seen_disp_event(term);
3503 case 'f': /* HVP: set horz and vert posns at once */
3504 if (term->esc_nargs < 2)
3505 term->esc_args[1] = ARG_DEFAULT;
3506 move(term, def(term->esc_args[1], 1) - 1,
3507 ((term->dec_om ? term->marg_t : 0) +
3508 def(term->esc_args[0], 1) - 1),
3509 (term->dec_om ? 2 : 0));
3510 seen_disp_event(term);
3512 case 'J': /* ED: erase screen or parts of it */
3514 unsigned int i = def(term->esc_args[0], 0);
3516 /* Erase Saved Lines (xterm)
3517 * This follows Thomas Dickey's xterm. */
3523 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
3526 if (term->scroll_on_disp)
3528 seen_disp_event(term);
3530 case 'K': /* EL: erase line or parts of it */
3532 unsigned int i = def(term->esc_args[0], 0) + 1;
3535 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
3537 seen_disp_event(term);
3539 case 'L': /* IL: insert lines */
3540 compatibility(VT102);
3541 if (term->curs.y <= term->marg_b)
3542 scroll(term, term->curs.y, term->marg_b,
3543 -def(term->esc_args[0], 1), FALSE);
3544 seen_disp_event(term);
3546 case 'M': /* DL: delete lines */
3547 compatibility(VT102);
3548 if (term->curs.y <= term->marg_b)
3549 scroll(term, term->curs.y, term->marg_b,
3550 def(term->esc_args[0], 1),
3552 seen_disp_event(term);
3554 case '@': /* ICH: insert chars */
3555 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3556 compatibility(VT102);
3557 insch(term, def(term->esc_args[0], 1));
3558 seen_disp_event(term);
3560 case 'P': /* DCH: delete chars */
3561 compatibility(VT102);
3562 insch(term, -def(term->esc_args[0], 1));
3563 seen_disp_event(term);
3565 case 'c': /* DA: terminal type query */
3566 compatibility(VT100);
3567 /* This is the response for a VT102 */
3569 ldisc_send(term->ldisc, term->id_string,
3570 strlen(term->id_string), 0);
3572 case 'n': /* DSR: cursor position query */
3574 if (term->esc_args[0] == 6) {
3576 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
3578 ldisc_send(term->ldisc, buf, strlen(buf), 0);
3579 } else if (term->esc_args[0] == 5) {
3580 ldisc_send(term->ldisc, "\033[0n", 4, 0);
3584 case 'h': /* SM: toggle modes to high */
3586 compatibility(VT100);
3589 for (i = 0; i < term->esc_nargs; i++)
3590 toggle_mode(term, term->esc_args[i],
3591 term->esc_query, TRUE);
3594 case 'i': /* MC: Media copy */
3596 compatibility(VT100);
3599 if (term->esc_nargs != 1) break;
3600 if (term->esc_args[0] == 5 &&
3601 (printer = conf_get_str(term->conf,
3602 CONF_printer))[0]) {
3603 term->printing = TRUE;
3604 term->only_printing = !term->esc_query;
3605 term->print_state = 0;
3606 term_print_setup(term, printer);
3607 } else if (term->esc_args[0] == 4 &&
3609 term_print_finish(term);
3613 case 'l': /* RM: toggle modes to low */
3615 compatibility(VT100);
3618 for (i = 0; i < term->esc_nargs; i++)
3619 toggle_mode(term, term->esc_args[i],
3620 term->esc_query, FALSE);
3623 case 'g': /* TBC: clear tabs */
3624 compatibility(VT100);
3625 if (term->esc_nargs == 1) {
3626 if (term->esc_args[0] == 0) {
3627 term->tabs[term->curs.x] = FALSE;
3628 } else if (term->esc_args[0] == 3) {
3630 for (i = 0; i < term->cols; i++)
3631 term->tabs[i] = FALSE;
3635 case 'r': /* DECSTBM: set scroll margins */
3636 compatibility(VT100);
3637 if (term->esc_nargs <= 2) {
3639 top = def(term->esc_args[0], 1) - 1;
3640 bot = (term->esc_nargs <= 1
3641 || term->esc_args[1] == 0 ?
3643 def(term->esc_args[1], term->rows)) - 1;
3644 if (bot >= term->rows)
3645 bot = term->rows - 1;
3646 /* VTTEST Bug 9 - if region is less than 2 lines
3647 * don't change region.
3649 if (bot - top > 0) {
3654 * I used to think the cursor should be
3655 * placed at the top of the newly marginned
3656 * area. Apparently not: VMS TPU falls over
3659 * Well actually it should for
3662 term->curs.y = (term->dec_om ?
3664 seen_disp_event(term);
3668 case 'm': /* SGR: set graphics rendition */
3671 * A VT100 without the AVO only had one
3672 * attribute, either underline or
3673 * reverse video depending on the
3674 * cursor type, this was selected by
3678 * This is sometimes DIM, eg on the
3681 * This is sometimes INVIS various ANSI.
3683 * This like 22 disables BOLD, DIM and INVIS
3685 * The ANSI colours appear on any
3686 * terminal that has colour (obviously)
3687 * but the interaction between sgr0 and
3688 * the colours varies but is usually
3689 * related to the background colour
3690 * erase item. The interaction between
3691 * colour attributes and the mono ones
3692 * is also very implementation
3695 * The 39 and 49 attributes are likely
3696 * to be unimplemented.
3699 for (i = 0; i < term->esc_nargs; i++) {
3700 switch (def(term->esc_args[i], 0)) {
3701 case 0: /* restore defaults */
3702 term->curr_attr = term->default_attr;
3704 case 1: /* enable bold */
3705 compatibility(VT100AVO);
3706 term->curr_attr |= ATTR_BOLD;
3708 case 21: /* (enable double underline) */
3709 compatibility(OTHER);
3710 case 4: /* enable underline */
3711 compatibility(VT100AVO);
3712 term->curr_attr |= ATTR_UNDER;
3714 case 5: /* enable blink */
3715 compatibility(VT100AVO);
3716 term->curr_attr |= ATTR_BLINK;
3718 case 6: /* SCO light bkgrd */
3719 compatibility(SCOANSI);
3720 term->blink_is_real = FALSE;
3721 term->curr_attr |= ATTR_BLINK;
3722 term_schedule_tblink(term);
3724 case 7: /* enable reverse video */
3725 term->curr_attr |= ATTR_REVERSE;
3727 case 10: /* SCO acs off */
3728 compatibility(SCOANSI);
3729 if (term->no_remote_charset) break;
3730 term->sco_acs = 0; break;
3731 case 11: /* SCO acs on */
3732 compatibility(SCOANSI);
3733 if (term->no_remote_charset) break;
3734 term->sco_acs = 1; break;
3735 case 12: /* SCO acs on, |0x80 */
3736 compatibility(SCOANSI);
3737 if (term->no_remote_charset) break;
3738 term->sco_acs = 2; break;
3739 case 22: /* disable bold */
3740 compatibility2(OTHER, VT220);
3741 term->curr_attr &= ~ATTR_BOLD;
3743 case 24: /* disable underline */
3744 compatibility2(OTHER, VT220);
3745 term->curr_attr &= ~ATTR_UNDER;
3747 case 25: /* disable blink */
3748 compatibility2(OTHER, VT220);
3749 term->curr_attr &= ~ATTR_BLINK;
3751 case 27: /* disable reverse video */
3752 compatibility2(OTHER, VT220);
3753 term->curr_attr &= ~ATTR_REVERSE;
3764 term->curr_attr &= ~ATTR_FGMASK;
3766 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
3776 /* aixterm-style bright foreground */
3777 term->curr_attr &= ~ATTR_FGMASK;
3779 ((term->esc_args[i] - 90 + 8)
3782 case 39: /* default-foreground */
3783 term->curr_attr &= ~ATTR_FGMASK;
3784 term->curr_attr |= ATTR_DEFFG;
3795 term->curr_attr &= ~ATTR_BGMASK;
3797 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
3807 /* aixterm-style bright background */
3808 term->curr_attr &= ~ATTR_BGMASK;
3810 ((term->esc_args[i] - 100 + 8)
3813 case 49: /* default-background */
3814 term->curr_attr &= ~ATTR_BGMASK;
3815 term->curr_attr |= ATTR_DEFBG;
3817 case 38: /* xterm 256-colour mode */
3818 if (i+2 < term->esc_nargs &&
3819 term->esc_args[i+1] == 5) {
3820 term->curr_attr &= ~ATTR_FGMASK;
3822 ((term->esc_args[i+2] & 0xFF)
3827 case 48: /* xterm 256-colour mode */
3828 if (i+2 < term->esc_nargs &&
3829 term->esc_args[i+1] == 5) {
3830 term->curr_attr &= ~ATTR_BGMASK;
3832 ((term->esc_args[i+2] & 0xFF)
3839 set_erase_char(term);
3842 case 's': /* save cursor */
3843 save_cursor(term, TRUE);
3845 case 'u': /* restore cursor */
3846 save_cursor(term, FALSE);
3847 seen_disp_event(term);
3849 case 't': /* DECSLPP: set page size - ie window height */
3851 * VT340/VT420 sequence DECSLPP, DEC only allows values
3852 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3853 * illegal values (eg first arg 1..9) for window changing
3856 if (term->esc_nargs <= 1
3857 && (term->esc_args[0] < 1 ||
3858 term->esc_args[0] >= 24)) {
3859 compatibility(VT340TEXT);
3860 if (!term->no_remote_resize)
3861 request_resize(term->frontend, term->cols,
3862 def(term->esc_args[0], 24));
3864 } else if (term->esc_nargs >= 1 &&
3865 term->esc_args[0] >= 1 &&
3866 term->esc_args[0] < 24) {
3867 compatibility(OTHER);
3869 switch (term->esc_args[0]) {
3873 set_iconic(term->frontend, FALSE);
3876 set_iconic(term->frontend, TRUE);
3879 if (term->esc_nargs >= 3) {
3880 if (!term->no_remote_resize)
3881 move_window(term->frontend,
3882 def(term->esc_args[1], 0),
3883 def(term->esc_args[2], 0));
3887 /* We should resize the window to a given
3888 * size in pixels here, but currently our
3889 * resizing code isn't healthy enough to
3894 set_zorder(term->frontend, TRUE);
3897 /* move to bottom */
3898 set_zorder(term->frontend, FALSE);
3901 refresh_window(term->frontend);
3904 if (term->esc_nargs >= 3) {
3905 if (!term->no_remote_resize)
3906 request_resize(term->frontend,
3907 def(term->esc_args[2], term->conf_width),
3908 def(term->esc_args[1], term->conf_height));
3912 if (term->esc_nargs >= 2)
3913 set_zoomed(term->frontend,
3919 ldisc_send(term->ldisc,
3920 is_iconic(term->frontend) ?
3921 "\033[2t" : "\033[1t", 4, 0);
3925 get_window_pos(term->frontend, &x, &y);
3926 len = sprintf(buf, "\033[3;%d;%dt", x, y);
3927 ldisc_send(term->ldisc, buf, len, 0);
3932 get_window_pixels(term->frontend, &x, &y);
3933 len = sprintf(buf, "\033[4;%d;%dt", y, x);
3934 ldisc_send(term->ldisc, buf, len, 0);
3939 len = sprintf(buf, "\033[8;%d;%dt",
3940 term->rows, term->cols);
3941 ldisc_send(term->ldisc, buf, len, 0);
3946 * Hmmm. Strictly speaking we
3947 * should return `the size of the
3948 * screen in characters', but
3949 * that's not easy: (a) window
3950 * furniture being what it is it's
3951 * hard to compute, and (b) in
3952 * resize-font mode maximising the
3953 * window wouldn't change the
3954 * number of characters. *shrug*. I
3955 * think we'll ignore it for the
3956 * moment and see if anyone
3957 * complains, and then ask them
3958 * what they would like it to do.
3963 term->remote_qtitle_action != TITLE_NONE) {
3964 if(term->remote_qtitle_action == TITLE_REAL)
3965 p = get_window_title(term->frontend, TRUE);
3967 p = EMPTY_WINDOW_TITLE;
3969 ldisc_send(term->ldisc, "\033]L", 3, 0);
3970 ldisc_send(term->ldisc, p, len, 0);
3971 ldisc_send(term->ldisc, "\033\\", 2, 0);
3976 term->remote_qtitle_action != TITLE_NONE) {
3977 if(term->remote_qtitle_action == TITLE_REAL)
3978 p = get_window_title(term->frontend, FALSE);
3980 p = EMPTY_WINDOW_TITLE;
3982 ldisc_send(term->ldisc, "\033]l", 3, 0);
3983 ldisc_send(term->ldisc, p, len, 0);
3984 ldisc_send(term->ldisc, "\033\\", 2, 0);
3990 case 'S': /* SU: Scroll up */
3991 compatibility(SCOANSI);
3992 scroll(term, term->marg_t, term->marg_b,
3993 def(term->esc_args[0], 1), TRUE);
3994 term->wrapnext = FALSE;
3995 seen_disp_event(term);
3997 case 'T': /* SD: Scroll down */
3998 compatibility(SCOANSI);
3999 scroll(term, term->marg_t, term->marg_b,
4000 -def(term->esc_args[0], 1), TRUE);
4001 term->wrapnext = FALSE;
4002 seen_disp_event(term);
4004 case ANSI('|', '*'): /* DECSNLS */
4006 * Set number of lines on screen
4007 * VT420 uses VGA like hardware and can
4008 * support any size in reasonable range
4009 * (24..49 AIUI) with no default specified.
4011 compatibility(VT420);
4012 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
4013 if (!term->no_remote_resize)
4014 request_resize(term->frontend, term->cols,
4015 def(term->esc_args[0],
4016 term->conf_height));
4020 case ANSI('|', '$'): /* DECSCPP */
4022 * Set number of columns per page
4023 * Docs imply range is only 80 or 132, but
4026 compatibility(VT340TEXT);
4027 if (term->esc_nargs <= 1) {
4028 if (!term->no_remote_resize)
4029 request_resize(term->frontend,
4030 def(term->esc_args[0],
4036 case 'X': /* ECH: write N spaces w/o moving cursor */
4037 /* XXX VTTEST says this is vt220, vt510 manual
4039 compatibility(ANSIMIN);
4041 int n = def(term->esc_args[0], 1);
4043 int p = term->curs.x;
4044 termline *cline = scrlineptr(term->curs.y);
4046 if (n > term->cols - term->curs.x)
4047 n = term->cols - term->curs.x;
4048 cursplus = term->curs;
4050 check_boundary(term, term->curs.x, term->curs.y);
4051 check_boundary(term, term->curs.x+n, term->curs.y);
4052 check_selection(term, term->curs, cursplus);
4054 copy_termchar(cline, p++,
4056 seen_disp_event(term);
4059 case 'x': /* DECREQTPARM: report terminal characteristics */
4060 compatibility(VT100);
4063 int i = def(term->esc_args[0], 0);
4064 if (i == 0 || i == 1) {
4065 strcpy(buf, "\033[2;1;1;112;112;1;0x");
4067 ldisc_send(term->ldisc, buf, 20, 0);
4072 compatibility(OTHER);
4074 int i = def(term->esc_args[0], 1);
4075 pos old_curs = term->curs;
4077 for(;i>0 && term->curs.x>0; i--) {
4080 } while (term->curs.x >0 &&
4081 !term->tabs[term->curs.x]);
4083 check_selection(term, old_curs, term->curs);
4086 case ANSI('c', '='): /* Hide or Show Cursor */
4087 compatibility(SCOANSI);
4088 switch(term->esc_args[0]) {
4089 case 0: /* hide cursor */
4090 term->cursor_on = FALSE;
4092 case 1: /* restore cursor */
4093 term->big_cursor = FALSE;
4094 term->cursor_on = TRUE;
4096 case 2: /* block cursor */
4097 term->big_cursor = TRUE;
4098 term->cursor_on = TRUE;
4102 case ANSI('C', '='):
4104 * set cursor start on scanline esc_args[0] and
4105 * end on scanline esc_args[1].If you set
4106 * the bottom scan line to a value less than
4107 * the top scan line, the cursor will disappear.
4109 compatibility(SCOANSI);
4110 if (term->esc_nargs >= 2) {
4111 if (term->esc_args[0] > term->esc_args[1])
4112 term->cursor_on = FALSE;
4114 term->cursor_on = TRUE;
4117 case ANSI('D', '='):
4118 compatibility(SCOANSI);
4119 term->blink_is_real = FALSE;
4120 term_schedule_tblink(term);
4121 if (term->esc_args[0]>=1)
4122 term->curr_attr |= ATTR_BLINK;
4124 term->curr_attr &= ~ATTR_BLINK;
4126 case ANSI('E', '='):
4127 compatibility(SCOANSI);
4128 term->blink_is_real = (term->esc_args[0] >= 1);
4129 term_schedule_tblink(term);
4131 case ANSI('F', '='): /* set normal foreground */
4132 compatibility(SCOANSI);
4133 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
4135 (sco2ansicolour[term->esc_args[0] & 0x7] |
4136 (term->esc_args[0] & 0x8)) <<
4138 term->curr_attr &= ~ATTR_FGMASK;
4139 term->curr_attr |= colour;
4140 term->default_attr &= ~ATTR_FGMASK;
4141 term->default_attr |= colour;
4142 set_erase_char(term);
4145 case ANSI('G', '='): /* set normal background */
4146 compatibility(SCOANSI);
4147 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
4149 (sco2ansicolour[term->esc_args[0] & 0x7] |
4150 (term->esc_args[0] & 0x8)) <<
4152 term->curr_attr &= ~ATTR_BGMASK;
4153 term->curr_attr |= colour;
4154 term->default_attr &= ~ATTR_BGMASK;
4155 term->default_attr |= colour;
4156 set_erase_char(term);
4159 case ANSI('L', '='):
4160 compatibility(SCOANSI);
4161 term->use_bce = (term->esc_args[0] <= 0);
4162 set_erase_char(term);
4164 case ANSI('p', '"'): /* DECSCL: set compat level */
4166 * Allow the host to make this emulator a
4167 * 'perfect' VT102. This first appeared in
4168 * the VT220, but we do need to get back to
4169 * PuTTY mode so I won't check it.
4171 * The arg in 40..42,50 are a PuTTY extension.
4172 * The 2nd arg, 8bit vs 7bit is not checked.
4174 * Setting VT102 mode should also change
4175 * the Fkeys to generate PF* codes as a
4176 * real VT102 has no Fkeys. The VT220 does
4177 * this, F11..F13 become ESC,BS,LF other
4178 * Fkeys send nothing.
4180 * Note ESC c will NOT change this!
4183 switch (term->esc_args[0]) {
4185 term->compatibility_level &= ~TM_VTXXX;
4186 term->compatibility_level |= TM_VT102;
4189 term->compatibility_level &= ~TM_VTXXX;
4190 term->compatibility_level |= TM_VT220;
4194 if (term->esc_args[0] > 60 &&
4195 term->esc_args[0] < 70)
4196 term->compatibility_level |= TM_VTXXX;
4200 term->compatibility_level &= TM_VTXXX;
4203 term->compatibility_level = TM_PUTTY;
4206 term->compatibility_level = TM_SCOANSI;
4210 term->compatibility_level = TM_PUTTY;
4216 /* Change the response to CSI c */
4217 if (term->esc_args[0] == 50) {
4220 strcpy(term->id_string, "\033[?");
4221 for (i = 1; i < term->esc_nargs; i++) {
4223 strcat(term->id_string, ";");
4224 sprintf(lbuf, "%d", term->esc_args[i]);
4225 strcat(term->id_string, lbuf);
4227 strcat(term->id_string, "c");
4230 /* Is this a good idea ?
4231 * Well we should do a soft reset at this point ...
4233 if (!has_compat(VT420) && has_compat(VT100)) {
4234 if (!term->no_remote_resize) {
4235 if (term->reset_132)
4236 request_resize(132, 24);
4238 request_resize(80, 24);
4246 term->osc_w = FALSE;
4248 case 'P': /* Linux palette sequence */
4249 term->termstate = SEEN_OSC_P;
4250 term->osc_strlen = 0;
4252 case 'R': /* Linux palette reset */
4253 palette_reset(term->frontend);
4254 term_invalidate(term);
4255 term->termstate = TOPLEVEL;
4257 case 'W': /* word-set */
4258 term->termstate = SEEN_OSC_W;
4271 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4275 * Grotty hack to support xterm and DECterm title
4276 * sequences concurrently.
4278 if (term->esc_args[0] == 2) {
4279 term->esc_args[0] = 1;
4282 /* else fall through */
4284 term->termstate = OSC_STRING;
4285 term->osc_strlen = 0;
4290 * This OSC stuff is EVIL. It takes just one character to get into
4291 * sysline mode and it's not initially obvious how to get out.
4292 * So I've added CR and LF as string aborts.
4293 * This shouldn't effect compatibility as I believe embedded
4294 * control characters are supposed to be interpreted (maybe?)
4295 * and they don't display anything useful anyway.
4299 if (c == '\012' || c == '\015') {
4300 term->termstate = TOPLEVEL;
4301 } else if (c == 0234 || c == '\007') {
4303 * These characters terminate the string; ST and BEL
4304 * terminate the sequence and trigger instant
4305 * processing of it, whereas ESC goes back to SEEN_ESC
4306 * mode unless it is followed by \, in which case it is
4307 * synonymous with ST in the first place.
4310 term->termstate = TOPLEVEL;
4311 } else if (c == '\033')
4312 term->termstate = OSC_MAYBE_ST;
4313 else if (term->osc_strlen < OSC_STR_MAX)
4314 term->osc_string[term->osc_strlen++] = (char)c;
4318 int max = (term->osc_strlen == 0 ? 21 : 15);
4320 if ((int)c >= '0' && (int)c <= '9')
4322 else if ((int)c >= 'A' && (int)c <= 'A' + max - 10)
4324 else if ((int)c >= 'a' && (int)c <= 'a' + max - 10)
4327 term->termstate = TOPLEVEL;
4330 term->osc_string[term->osc_strlen++] = val;
4331 if (term->osc_strlen >= 7) {
4332 palette_set(term->frontend, term->osc_string[0],
4333 term->osc_string[1] * 16 + term->osc_string[2],
4334 term->osc_string[3] * 16 + term->osc_string[4],
4335 term->osc_string[5] * 16 + term->osc_string[6]);
4336 term_invalidate(term);
4337 term->termstate = TOPLEVEL;
4353 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4356 term->termstate = OSC_STRING;
4357 term->osc_strlen = 0;
4361 term->termstate = TOPLEVEL;
4362 seen_disp_event(term);
4365 move(term, term->curs.x, term->curs.y - 1, 1);
4368 move(term, term->curs.x, term->curs.y + 1, 1);
4371 move(term, term->curs.x + 1, term->curs.y, 1);
4374 move(term, term->curs.x - 1, term->curs.y, 1);
4377 * From the VT100 Manual
4378 * NOTE: The special graphics characters in the VT100
4379 * are different from those in the VT52
4381 * From VT102 manual:
4382 * 137 _ Blank - Same
4383 * 140 ` Reserved - Humm.
4384 * 141 a Solid rectangle - Similar
4385 * 142 b 1/ - Top half of fraction for the
4386 * 143 c 3/ - subscript numbers below.
4389 * 146 f Degrees - Same
4390 * 147 g Plus or minus - Same
4392 * 151 i Ellipsis (dots)
4395 * 154 l Bar at scan 0
4396 * 155 m Bar at scan 1
4397 * 156 n Bar at scan 2
4398 * 157 o Bar at scan 3 - Similar
4399 * 160 p Bar at scan 4 - Similar
4400 * 161 q Bar at scan 5 - Similar
4401 * 162 r Bar at scan 6 - Same
4402 * 163 s Bar at scan 7 - Similar
4417 term->cset_attr[term->cset = 0] = CSET_LINEDRW;
4420 term->cset_attr[term->cset = 0] = CSET_ASCII;
4423 move(term, 0, 0, 0);
4426 if (term->curs.y == 0)
4427 scroll(term, 0, term->rows - 1, -1, TRUE);
4428 else if (term->curs.y > 0)
4430 term->wrapnext = FALSE;
4433 erase_lots(term, FALSE, FALSE, TRUE);
4434 if (term->scroll_on_disp)
4438 erase_lots(term, TRUE, FALSE, TRUE);
4442 /* XXX Print cursor line */
4445 /* XXX Start controller mode */
4448 /* XXX Stop controller mode */
4452 term->termstate = VT52_Y1;
4456 ldisc_send(term->ldisc, "\033/Z", 3, 0);
4459 term->app_keypad_keys = TRUE;
4462 term->app_keypad_keys = FALSE;
4465 /* XXX This should switch to VT100 mode not current or default
4466 * VT mode. But this will only have effect in a VT220+
4469 term->vt52_mode = FALSE;
4470 term->blink_is_real = term->blinktext;
4471 term_schedule_tblink(term);
4475 /* XXX Enter auto print mode */
4478 /* XXX Exit auto print mode */
4481 /* XXX Print screen */
4487 /* compatibility(ATARI) */
4488 move(term, 0, 0, 0);
4489 erase_lots(term, FALSE, FALSE, TRUE);
4490 if (term->scroll_on_disp)
4494 /* compatibility(ATARI) */
4495 if (term->curs.y <= term->marg_b)
4496 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4499 /* compatibility(ATARI) */
4500 if (term->curs.y <= term->marg_b)
4501 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4504 /* compatibility(ATARI) */
4505 term->termstate = VT52_FG;
4508 /* compatibility(ATARI) */
4509 term->termstate = VT52_BG;
4512 /* compatibility(ATARI) */
4513 erase_lots(term, FALSE, TRUE, FALSE);
4514 if (term->scroll_on_disp)
4518 /* compatibility(ATARI) */
4519 term->cursor_on = TRUE;
4522 /* compatibility(ATARI) */
4523 term->cursor_on = FALSE;
4525 /* case 'j': Save cursor position - broken on ST */
4526 /* case 'k': Restore cursor position */
4528 /* compatibility(ATARI) */
4529 erase_lots(term, TRUE, TRUE, TRUE);
4531 term->wrapnext = FALSE;
4534 /* compatibility(ATARI) */
4535 erase_lots(term, TRUE, TRUE, FALSE);
4538 /* compatibility(ATARI) */
4539 term->curr_attr |= ATTR_REVERSE;
4542 /* compatibility(ATARI) */
4543 term->curr_attr &= ~ATTR_REVERSE;
4545 case 'v': /* wrap Autowrap on - Wyse style */
4546 /* compatibility(ATARI) */
4549 case 'w': /* Autowrap off */
4550 /* compatibility(ATARI) */
4555 /* compatibility(OTHER) */
4556 term->vt52_bold = FALSE;
4557 term->curr_attr = ATTR_DEFAULT;
4558 set_erase_char(term);
4561 /* compatibility(VI50) */
4562 term->curr_attr |= ATTR_UNDER;
4565 /* compatibility(VI50) */
4566 term->curr_attr &= ~ATTR_UNDER;
4569 /* compatibility(VI50) */
4570 term->vt52_bold = TRUE;
4571 term->curr_attr |= ATTR_BOLD;
4574 /* compatibility(VI50) */
4575 term->vt52_bold = FALSE;
4576 term->curr_attr &= ~ATTR_BOLD;
4582 term->termstate = VT52_Y2;
4583 move(term, term->curs.x, c - ' ', 0);
4586 term->termstate = TOPLEVEL;
4587 move(term, c - ' ', term->curs.y, 0);
4592 term->termstate = TOPLEVEL;
4593 term->curr_attr &= ~ATTR_FGMASK;
4594 term->curr_attr &= ~ATTR_BOLD;
4595 term->curr_attr |= (c & 0xF) << ATTR_FGSHIFT;
4596 set_erase_char(term);
4599 term->termstate = TOPLEVEL;
4600 term->curr_attr &= ~ATTR_BGMASK;
4601 term->curr_attr &= ~ATTR_BLINK;
4602 term->curr_attr |= (c & 0xF) << ATTR_BGSHIFT;
4603 set_erase_char(term);
4606 default: break; /* placate gcc warning about enum use */
4608 if (term->selstate != NO_SELECTION) {
4609 pos cursplus = term->curs;
4611 check_selection(term, term->curs, cursplus);
4615 term_print_flush(term);
4617 logflush(term->logctx);
4621 * To prevent having to run the reasonably tricky bidi algorithm
4622 * too many times, we maintain a cache of the last lineful of data
4623 * fed to the algorithm on each line of the display.
4625 static int term_bidi_cache_hit(Terminal *term, int line,
4626 termchar *lbefore, int width)
4630 if (!term->pre_bidi_cache)
4631 return FALSE; /* cache doesn't even exist yet! */
4633 if (line >= term->bidi_cache_size)
4634 return FALSE; /* cache doesn't have this many lines */
4636 if (!term->pre_bidi_cache[line].chars)
4637 return FALSE; /* cache doesn't contain _this_ line */
4639 if (term->pre_bidi_cache[line].width != width)
4640 return FALSE; /* line is wrong width */
4642 for (i = 0; i < width; i++)
4643 if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i))
4644 return FALSE; /* line doesn't match cache */
4646 return TRUE; /* it didn't match. */
4649 static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore,
4650 termchar *lafter, bidi_char *wcTo,
4651 int width, int size)
4655 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
4656 int j = term->bidi_cache_size;
4657 term->bidi_cache_size = line+1;
4658 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
4659 term->bidi_cache_size,
4660 struct bidi_cache_entry);
4661 term->post_bidi_cache = sresize(term->post_bidi_cache,
4662 term->bidi_cache_size,
4663 struct bidi_cache_entry);
4664 while (j < term->bidi_cache_size) {
4665 term->pre_bidi_cache[j].chars =
4666 term->post_bidi_cache[j].chars = NULL;
4667 term->pre_bidi_cache[j].width =
4668 term->post_bidi_cache[j].width = -1;
4669 term->pre_bidi_cache[j].forward =
4670 term->post_bidi_cache[j].forward = NULL;
4671 term->pre_bidi_cache[j].backward =
4672 term->post_bidi_cache[j].backward = NULL;
4677 sfree(term->pre_bidi_cache[line].chars);
4678 sfree(term->post_bidi_cache[line].chars);
4679 sfree(term->post_bidi_cache[line].forward);
4680 sfree(term->post_bidi_cache[line].backward);
4682 term->pre_bidi_cache[line].width = width;
4683 term->pre_bidi_cache[line].chars = snewn(size, termchar);
4684 term->post_bidi_cache[line].width = width;
4685 term->post_bidi_cache[line].chars = snewn(size, termchar);
4686 term->post_bidi_cache[line].forward = snewn(width, int);
4687 term->post_bidi_cache[line].backward = snewn(width, int);
4689 memcpy(term->pre_bidi_cache[line].chars, lbefore, size * TSIZE);
4690 memcpy(term->post_bidi_cache[line].chars, lafter, size * TSIZE);
4691 memset(term->post_bidi_cache[line].forward, 0, width * sizeof(int));
4692 memset(term->post_bidi_cache[line].backward, 0, width * sizeof(int));
4694 for (i = 0; i < width; i++) {
4695 int p = wcTo[i].index;
4697 assert(0 <= p && p < width);
4699 term->post_bidi_cache[line].backward[i] = p;
4700 term->post_bidi_cache[line].forward[p] = i;
4705 * Prepare the bidi information for a screen line. Returns the
4706 * transformed list of termchars, or NULL if no transformation at
4707 * all took place (because bidi is disabled). If return was
4708 * non-NULL, auxiliary information such as the forward and reverse
4709 * mappings of permutation position are available in
4710 * term->post_bidi_cache[scr_y].*.
4712 static termchar *term_bidi_line(Terminal *term, struct termline *ldata,
4718 /* Do Arabic shaping and bidi. */
4719 if(!term->bidi || !term->arabicshaping) {
4721 if (!term_bidi_cache_hit(term, scr_y, ldata->chars, term->cols)) {
4723 if (term->wcFromTo_size < term->cols) {
4724 term->wcFromTo_size = term->cols;
4725 term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size,
4727 term->wcTo = sresize(term->wcTo, term->wcFromTo_size,
4731 for(it=0; it<term->cols ; it++)
4733 unsigned long uc = (ldata->chars[it].chr);
4735 switch (uc & CSET_MASK) {
4737 if (!term->rawcnp) {
4738 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4742 uc = term->ucsdata->unitab_line[uc & 0xFF];
4745 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4748 switch (uc & CSET_MASK) {
4750 uc = term->ucsdata->unitab_font[uc & 0xFF];
4753 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4757 term->wcFrom[it].origwc = term->wcFrom[it].wc =
4759 term->wcFrom[it].index = it;
4763 do_bidi(term->wcFrom, term->cols);
4765 /* this is saved iff done from inside the shaping */
4766 if(!term->bidi && term->arabicshaping)
4767 for(it=0; it<term->cols; it++)
4768 term->wcTo[it] = term->wcFrom[it];
4770 if(!term->arabicshaping)
4771 do_shape(term->wcFrom, term->wcTo, term->cols);
4773 if (term->ltemp_size < ldata->size) {
4774 term->ltemp_size = ldata->size;
4775 term->ltemp = sresize(term->ltemp, term->ltemp_size,
4779 memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE);
4781 for(it=0; it<term->cols ; it++)
4783 term->ltemp[it] = ldata->chars[term->wcTo[it].index];
4784 if (term->ltemp[it].cc_next)
4785 term->ltemp[it].cc_next -=
4786 it - term->wcTo[it].index;
4788 if (term->wcTo[it].origwc != term->wcTo[it].wc)
4789 term->ltemp[it].chr = term->wcTo[it].wc;
4791 term_bidi_cache_store(term, scr_y, ldata->chars,
4792 term->ltemp, term->wcTo,
4793 term->cols, ldata->size);
4795 lchars = term->ltemp;
4797 lchars = term->post_bidi_cache[scr_y].chars;
4807 * Given a context, update the window. Out of paranoia, we don't
4808 * allow WM_PAINT responses to do scrolling optimisations.
4810 static void do_paint(Terminal *term, Context ctx, int may_optimise)
4812 int i, j, our_curs_y, our_curs_x;
4817 #ifdef OPTIMISE_SCROLL
4818 struct scrollregion *sr;
4819 #endif /* OPTIMISE_SCROLL */
4823 ch = snewn(chlen, wchar_t);
4825 newline = snewn(term->cols, termchar);
4827 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4830 * screen array, disptop, scrtop,
4832 * blinkpc, blink_is_real, tblinker,
4833 * curs.y, curs.x, cblinker, blink_cur, cursor_on, has_focus, wrapnext
4836 /* Has the cursor position or type changed ? */
4837 if (term->cursor_on) {
4838 if (term->has_focus) {
4839 if (term->cblinker || !term->blink_cur)
4840 cursor = TATTR_ACTCURS;
4844 cursor = TATTR_PASCURS;
4846 cursor |= TATTR_RIGHTCURS;
4849 our_curs_y = term->curs.y - term->disptop;
4852 * Adjust the cursor position:
4854 * - in the case where it's resting on the right-hand half
4855 * of a CJK wide character. xterm's behaviour here,
4856 * which seems adequate to me, is to display the cursor
4857 * covering the _whole_ character, exactly as if it were
4858 * one space to the left.
4860 termline *ldata = lineptr(term->curs.y);
4863 our_curs_x = term->curs.x;
4865 if ( (lchars = term_bidi_line(term, ldata, our_curs_y)) != NULL) {
4866 our_curs_x = term->post_bidi_cache[our_curs_y].forward[our_curs_x];
4868 lchars = ldata->chars;
4870 if (our_curs_x > 0 &&
4871 lchars[our_curs_x].chr == UCSWIDE)
4878 * If the cursor is not where it was last time we painted, and
4879 * its previous position is visible on screen, invalidate its
4880 * previous position.
4882 if (term->dispcursy >= 0 &&
4883 (term->curstype != cursor ||
4884 term->dispcursy != our_curs_y ||
4885 term->dispcursx != our_curs_x)) {
4886 termchar *dispcurs = term->disptext[term->dispcursy]->chars +
4889 if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE)
4890 dispcurs[-1].attr |= ATTR_INVALID;
4891 if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE)
4892 dispcurs[1].attr |= ATTR_INVALID;
4893 dispcurs->attr |= ATTR_INVALID;
4897 term->dispcursx = term->dispcursy = -1;
4899 #ifdef OPTIMISE_SCROLL
4901 sr = term->scrollhead;
4903 struct scrollregion *next = sr->next;
4904 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
4908 term->scrollhead = term->scrolltail = NULL;
4909 #endif /* OPTIMISE_SCROLL */
4911 /* The normal screen data */
4912 for (i = 0; i < term->rows; i++) {
4915 int dirty_line, dirty_run, selected;
4916 unsigned long attr = 0, cset = 0;
4919 int last_run_dirty = 0;
4920 int laststart, dirtyrect;
4923 scrpos.y = i + term->disptop;
4924 ldata = lineptr(scrpos.y);
4926 /* Do Arabic shaping and bidi. */
4927 lchars = term_bidi_line(term, ldata, i);
4929 backward = term->post_bidi_cache[i].backward;
4931 lchars = ldata->chars;
4936 * First loop: work along the line deciding what we want
4937 * each character cell to look like.
4939 for (j = 0; j < term->cols; j++) {
4940 unsigned long tattr, tchar;
4941 termchar *d = lchars + j;
4942 scrpos.x = backward ? backward[j] : j;
4947 if (!term->ansi_colour)
4948 tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) |
4949 ATTR_DEFFG | ATTR_DEFBG;
4951 if (!term->xterm_256_colour) {
4953 colour = (tattr & ATTR_FGMASK) >> ATTR_FGSHIFT;
4954 if (colour >= 16 && colour < 256)
4955 tattr = (tattr &~ ATTR_FGMASK) | ATTR_DEFFG;
4956 colour = (tattr & ATTR_BGMASK) >> ATTR_BGSHIFT;
4957 if (colour >= 16 && colour < 256)
4958 tattr = (tattr &~ ATTR_BGMASK) | ATTR_DEFBG;
4961 switch (tchar & CSET_MASK) {
4963 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4966 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4969 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
4972 if (j < term->cols-1 && d[1].chr == UCSWIDE)
4975 /* Video reversing things */
4976 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
4977 if (term->seltype == LEXICOGRAPHIC)
4978 selected = (posle(term->selstart, scrpos) &&
4979 poslt(scrpos, term->selend));
4981 selected = (posPle(term->selstart, scrpos) &&
4982 posPlt(scrpos, term->selend));
4986 ^ (selected ? ATTR_REVERSE : 0));
4988 /* 'Real' blinking ? */
4989 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
4990 if (term->has_focus && term->tblinker) {
4991 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
4993 tattr &= ~ATTR_BLINK;
4997 * Check the font we'll _probably_ be using to see if
4998 * the character is wide when we don't want it to be.
5000 if (tchar != term->disptext[i]->chars[j].chr ||
5001 tattr != (term->disptext[i]->chars[j].attr &~
5002 (ATTR_NARROW | DATTR_MASK))) {
5003 if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2)
5004 tattr |= ATTR_NARROW;
5005 } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW)
5006 tattr |= ATTR_NARROW;
5008 if (i == our_curs_y && j == our_curs_x) {
5010 term->curstype = cursor;
5011 term->dispcursx = j;
5012 term->dispcursy = i;
5016 newline[j].attr = tattr;
5017 newline[j].chr = tchar;
5018 /* Combining characters are still read from lchars */
5019 newline[j].cc_next = 0;
5023 * Now loop over the line again, noting where things have
5026 * During this loop, we keep track of where we last saw
5027 * DATTR_STARTRUN. Any mismatch automatically invalidates
5028 * _all_ of the containing run that was last printed: that
5029 * is, any rectangle that was drawn in one go in the
5030 * previous update should be either left completely alone
5031 * or overwritten in its entirety. This, along with the
5032 * expectation that front ends clip all text runs to their
5033 * bounding rectangle, should solve any possible problems
5034 * with fonts that overflow their character cells.
5038 for (j = 0; j < term->cols; j++) {
5039 if (term->disptext[i]->chars[j].attr & DATTR_STARTRUN) {
5044 if (term->disptext[i]->chars[j].chr != newline[j].chr ||
5045 (term->disptext[i]->chars[j].attr &~ DATTR_MASK)
5046 != newline[j].attr) {
5050 for (k = laststart; k < j; k++)
5051 term->disptext[i]->chars[k].attr |= ATTR_INVALID;
5058 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5062 * Finally, loop once more and actually do the drawing.
5064 dirty_run = dirty_line = (ldata->lattr !=
5065 term->disptext[i]->lattr);
5066 term->disptext[i]->lattr = ldata->lattr;
5068 for (j = 0; j < term->cols; j++) {
5069 unsigned long tattr, tchar;
5070 int break_run, do_copy;
5071 termchar *d = lchars + j;
5073 tattr = newline[j].attr;
5074 tchar = newline[j].chr;
5076 if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE)
5079 break_run = ((tattr ^ attr) & term->attr_mask) != 0;
5081 #ifdef USES_VTLINE_HACK
5082 /* Special hack for VT100 Linedraw glyphs */
5083 if ((tchar >= 0x23BA && tchar <= 0x23BD) ||
5084 (j > 0 && (newline[j-1].chr >= 0x23BA &&
5085 newline[j-1].chr <= 0x23BD)))
5090 * Separate out sequences of characters that have the
5091 * same CSET, if that CSET is a magic one.
5093 if (CSET_OF(tchar) != cset)
5097 * Break on both sides of any combined-character cell.
5099 if (d->cc_next != 0 ||
5100 (j > 0 && d[-1].cc_next != 0))
5103 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
5104 if (term->disptext[i]->chars[j].chr == tchar &&
5105 (term->disptext[i]->chars[j].attr &~ DATTR_MASK) == tattr)
5107 else if (!dirty_run && ccount == 1)
5112 if ((dirty_run || last_run_dirty) && ccount > 0) {
5113 do_text(ctx, start, i, ch, ccount, attr,
5115 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
5116 do_cursor(ctx, start, i, ch, ccount, attr,
5122 cset = CSET_OF(tchar);
5123 if (term->ucsdata->dbcs_screenfont)
5124 last_run_dirty = dirty_run;
5125 dirty_run = dirty_line;
5129 if (!termchars_equal_override(&term->disptext[i]->chars[j],
5135 if (ccount+2 > chlen) {
5136 chlen = ccount + 256;
5137 ch = sresize(ch, chlen, wchar_t);
5140 #ifdef PLATFORM_IS_UTF16
5141 if (tchar > 0x10000 && tchar < 0x110000) {
5142 ch[ccount++] = (wchar_t) HIGH_SURROGATE_OF(tchar);
5143 ch[ccount++] = (wchar_t) LOW_SURROGATE_OF(tchar);
5145 #endif /* PLATFORM_IS_UTF16 */
5146 ch[ccount++] = (wchar_t) tchar;
5151 while (dd->cc_next) {
5152 unsigned long schar;
5157 switch (schar & CSET_MASK) {
5159 schar = term->ucsdata->unitab_line[schar & 0xFF];
5162 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
5165 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
5169 if (ccount+2 > chlen) {
5170 chlen = ccount + 256;
5171 ch = sresize(ch, chlen, wchar_t);
5174 #ifdef PLATFORM_IS_UTF16
5175 if (schar > 0x10000 && schar < 0x110000) {
5176 ch[ccount++] = (wchar_t) HIGH_SURROGATE_OF(schar);
5177 ch[ccount++] = (wchar_t) LOW_SURROGATE_OF(schar);
5179 #endif /* PLATFORM_IS_UTF16 */
5180 ch[ccount++] = (wchar_t) schar;
5183 attr |= TATTR_COMBINING;
5187 copy_termchar(term->disptext[i], j, d);
5188 term->disptext[i]->chars[j].chr = tchar;
5189 term->disptext[i]->chars[j].attr = tattr;
5191 term->disptext[i]->chars[j].attr |= DATTR_STARTRUN;
5194 /* If it's a wide char step along to the next one. */
5195 if (tattr & ATTR_WIDE) {
5196 if (++j < term->cols) {
5199 * By construction above, the cursor should not
5200 * be on the right-hand half of this character.
5203 assert(!(i == our_curs_y && j == our_curs_x));
5204 if (!termchars_equal(&term->disptext[i]->chars[j], d))
5206 copy_termchar(term->disptext[i], j, d);
5210 if (dirty_run && ccount > 0) {
5211 do_text(ctx, start, i, ch, ccount, attr,
5213 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
5214 do_cursor(ctx, start, i, ch, ccount, attr,
5226 * Invalidate the whole screen so it will be repainted in full.
5228 void term_invalidate(Terminal *term)
5232 for (i = 0; i < term->rows; i++)
5233 for (j = 0; j < term->cols; j++)
5234 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5236 term_schedule_update(term);
5240 * Paint the window in response to a WM_PAINT message.
5242 void term_paint(Terminal *term, Context ctx,
5243 int left, int top, int right, int bottom, int immediately)
5246 if (left < 0) left = 0;
5247 if (top < 0) top = 0;
5248 if (right >= term->cols) right = term->cols-1;
5249 if (bottom >= term->rows) bottom = term->rows-1;
5251 for (i = top; i <= bottom && i < term->rows; i++) {
5252 if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM)
5253 for (j = left; j <= right && j < term->cols; j++)
5254 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5256 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
5257 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5261 do_paint (term, ctx, FALSE);
5263 term_schedule_update(term);
5268 * Attempt to scroll the scrollback. The second parameter gives the
5269 * position we want to scroll to; the first is +1 to denote that
5270 * this position is relative to the beginning of the scrollback, -1
5271 * to denote it is relative to the end, and 0 to denote that it is
5272 * relative to the current position.
5274 void term_scroll(Terminal *term, int rel, int where)
5276 int sbtop = -sblines(term);
5277 #ifdef OPTIMISE_SCROLL
5278 int olddisptop = term->disptop;
5280 #endif /* OPTIMISE_SCROLL */
5282 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
5283 if (term->disptop < sbtop)
5284 term->disptop = sbtop;
5285 if (term->disptop > 0)
5288 #ifdef OPTIMISE_SCROLL
5289 shift = (term->disptop - olddisptop);
5290 if (shift < term->rows && shift > -term->rows)
5291 scroll_display(term, 0, term->rows - 1, shift);
5292 #endif /* OPTIMISE_SCROLL */
5297 * Scroll the scrollback to centre it on the beginning or end of the
5298 * current selection, if any.
5300 void term_scroll_to_selection(Terminal *term, int which_end)
5304 int sbtop = -sblines(term);
5306 if (term->selstate != SELECTED)
5309 target = term->selend;
5311 target = term->selstart;
5313 y = target.y - term->rows/2;
5318 term_scroll(term, -1, y);
5322 * Helper routine for clipme(): growing buffer.
5325 int buflen; /* amount of allocated space in textbuf/attrbuf */
5326 int bufpos; /* amount of actual data */
5327 wchar_t *textbuf; /* buffer for copied text */
5328 wchar_t *textptr; /* = textbuf + bufpos (current insertion point) */
5329 int *attrbuf; /* buffer for copied attributes */
5330 int *attrptr; /* = attrbuf + bufpos */
5333 static void clip_addchar(clip_workbuf *b, wchar_t chr, int attr)
5335 if (b->bufpos >= b->buflen) {
5337 b->textbuf = sresize(b->textbuf, b->buflen, wchar_t);
5338 b->textptr = b->textbuf + b->bufpos;
5339 b->attrbuf = sresize(b->attrbuf, b->buflen, int);
5340 b->attrptr = b->attrbuf + b->bufpos;
5342 *b->textptr++ = chr;
5343 *b->attrptr++ = attr;
5347 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
5355 buf.textptr = buf.textbuf = snewn(buf.buflen, wchar_t);
5356 buf.attrptr = buf.attrbuf = snewn(buf.buflen, int);
5358 old_top_x = top.x; /* needed for rect==1 */
5360 while (poslt(top, bottom)) {
5362 termline *ldata = lineptr(top.y);
5366 * nlpos will point at the maximum position on this line we
5367 * should copy up to. So we start it at the end of the
5371 nlpos.x = term->cols;
5374 * ... move it backwards if there's unused space at the end
5375 * of the line (and also set `nl' if this is the case,
5376 * because in normal selection mode this means we need a
5377 * newline at the end)...
5379 if (!(ldata->lattr & LATTR_WRAPPED)) {
5381 IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) &&
5382 !ldata->chars[nlpos.x - 1].cc_next &&
5385 if (poslt(nlpos, bottom))
5387 } else if (ldata->lattr & LATTR_WRAPPED2) {
5388 /* Ignore the last char on the line in a WRAPPED2 line. */
5393 * ... and then clip it to the terminal x coordinate if
5394 * we're doing rectangular selection. (In this case we
5395 * still did the above, so that copying e.g. the right-hand
5396 * column from a table doesn't fill with spaces on the
5400 if (nlpos.x > bottom.x)
5402 nl = (top.y < bottom.y);
5405 while (poslt(top, bottom) && poslt(top, nlpos)) {
5408 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
5410 wchar_t cbuf[16], *p;
5414 if (ldata->chars[x].chr == UCSWIDE) {
5420 int uc = ldata->chars[x].chr;
5421 attr = ldata->chars[x].attr;
5423 switch (uc & CSET_MASK) {
5425 if (!term->rawcnp) {
5426 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5430 uc = term->ucsdata->unitab_line[uc & 0xFF];
5433 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5436 switch (uc & CSET_MASK) {
5438 uc = term->ucsdata->unitab_font[uc & 0xFF];
5441 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5445 c = (uc & ~CSET_MASK);
5446 #ifdef PLATFORM_IS_UTF16
5447 if (uc > 0x10000 && uc < 0x110000) {
5448 cbuf[0] = 0xD800 | ((uc - 0x10000) >> 10);
5449 cbuf[1] = 0xDC00 | ((uc - 0x10000) & 0x3FF);
5458 if (DIRECT_FONT(uc)) {
5459 if (c >= ' ' && c != 0x7F) {
5463 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
5465 buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr);
5466 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
5470 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
5474 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
5481 for (p = cbuf; *p; p++)
5482 clip_addchar(&buf, *p, attr);
5484 if (ldata->chars[x].cc_next)
5485 x += ldata->chars[x].cc_next;
5493 for (i = 0; i < sel_nl_sz; i++)
5494 clip_addchar(&buf, sel_nl[i], 0);
5497 top.x = rect ? old_top_x : 0;
5501 #if SELECTION_NUL_TERMINATED
5502 clip_addchar(&buf, 0, 0);
5504 /* Finally, transfer all that to the clipboard. */
5505 write_clip(term->frontend, buf.textbuf, buf.attrbuf, buf.bufpos, desel);
5510 void term_copyall(Terminal *term)
5514 tree234 *screen = term->screen;
5515 top.y = -sblines(term);
5517 bottom.y = find_last_nonempty_line(term, screen);
5518 bottom.x = term->cols;
5519 clipme(term, top, bottom, 0, TRUE);
5523 * The wordness array is mainly for deciding the disposition of the
5524 * US-ASCII characters.
5526 static int wordtype(Terminal *term, int uc)
5529 int start, end, ctype;
5531 static const struct ucsword ucs_words[] = {
5537 0x037e, 0x037e, 1}, /* Greek question mark */
5539 0x0387, 0x0387, 1}, /* Greek ano teleia */
5541 0x055a, 0x055f, 1}, /* Armenian punctuation */
5543 0x0589, 0x0589, 1}, /* Armenian full stop */
5545 0x0700, 0x070d, 1}, /* Syriac punctuation */
5547 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5549 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5551 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5553 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5555 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5557 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5559 0x2000, 0x200a, 0}, /* Various spaces */
5561 0x2070, 0x207f, 2}, /* superscript */
5563 0x2080, 0x208f, 2}, /* subscript */
5565 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5567 0x3000, 0x3000, 0}, /* ideographic space */
5569 0x3001, 0x3020, 1}, /* ideographic punctuation */
5571 0x303f, 0x309f, 3}, /* Hiragana */
5573 0x30a0, 0x30ff, 3}, /* Katakana */
5575 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5577 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5579 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5581 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5583 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5585 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5587 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5589 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5591 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5595 const struct ucsword *wptr;
5597 switch (uc & CSET_MASK) {
5599 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5602 uc = term->ucsdata->unitab_line[uc & 0xFF];
5605 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5608 switch (uc & CSET_MASK) {
5610 uc = term->ucsdata->unitab_font[uc & 0xFF];
5613 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5617 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5618 * fail as there's such a thing as a double width space. :-(
5620 if (term->ucsdata->dbcs_screenfont &&
5621 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5625 return term->wordness[uc];
5627 for (wptr = ucs_words; wptr->start; wptr++) {
5628 if (uc >= wptr->start && uc <= wptr->end)
5636 * Spread the selection outwards according to the selection mode.
5638 static pos sel_spread_half(Terminal *term, pos p, int dir)
5642 int topy = -sblines(term);
5644 ldata = lineptr(p.y);
5646 switch (term->selmode) {
5649 * In this mode, every character is a separate unit, except
5650 * for runs of spaces at the end of a non-wrapping line.
5652 if (!(ldata->lattr & LATTR_WRAPPED)) {
5653 termchar *q = ldata->chars + term->cols;
5654 while (q > ldata->chars &&
5655 IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next)
5657 if (q == ldata->chars + term->cols)
5659 if (p.x >= q - ldata->chars)
5660 p.x = (dir == -1 ? q - ldata->chars : term->cols - 1);
5665 * In this mode, the units are maximal runs of characters
5666 * whose `wordness' has the same value.
5668 wvalue = wordtype(term, UCSGET(ldata->chars, p.x));
5671 int maxcols = (ldata->lattr & LATTR_WRAPPED2 ?
5672 term->cols-1 : term->cols);
5673 if (p.x < maxcols-1) {
5674 if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue)
5679 if (p.y+1 < term->rows &&
5680 (ldata->lattr & LATTR_WRAPPED)) {
5682 ldata2 = lineptr(p.y+1);
5683 if (wordtype(term, UCSGET(ldata2->chars, 0))
5700 if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue)
5709 ldata2 = lineptr(p.y-1);
5710 maxcols = (ldata2->lattr & LATTR_WRAPPED2 ?
5711 term->cols-1 : term->cols);
5712 if (ldata2->lattr & LATTR_WRAPPED) {
5713 if (wordtype(term, UCSGET(ldata2->chars, maxcols-1))
5731 * In this mode, every line is a unit.
5733 p.x = (dir == -1 ? 0 : term->cols - 1);
5741 static void sel_spread(Terminal *term)
5743 if (term->seltype == LEXICOGRAPHIC) {
5744 term->selstart = sel_spread_half(term, term->selstart, -1);
5745 decpos(term->selend);
5746 term->selend = sel_spread_half(term, term->selend, +1);
5747 incpos(term->selend);
5751 static void term_paste_callback(void *vterm)
5753 Terminal *term = (Terminal *)vterm;
5755 if (term->paste_len == 0)
5758 while (term->paste_pos < term->paste_len) {
5760 while (n + term->paste_pos < term->paste_len) {
5761 if (term->paste_buffer[term->paste_pos + n++] == '\015')
5765 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
5766 term->paste_pos += n;
5768 if (term->paste_pos < term->paste_len) {
5769 queue_toplevel_callback(term_paste_callback, term);
5773 sfree(term->paste_buffer);
5774 term->paste_buffer = NULL;
5775 term->paste_len = 0;
5778 void term_do_paste(Terminal *term)
5783 get_clip(term->frontend, &data, &len);
5784 if (data && len > 0) {
5787 term_seen_key_event(term); /* pasted data counts */
5789 if (term->paste_buffer)
5790 sfree(term->paste_buffer);
5791 term->paste_pos = term->paste_len = 0;
5792 term->paste_buffer = snewn(len + 12, wchar_t);
5794 if (term->bracketed_paste) {
5795 memcpy(term->paste_buffer, L"\033[200~", 6 * sizeof(wchar_t));
5796 term->paste_len += 6;
5800 while (p < data + len) {
5801 while (p < data + len &&
5802 !(p <= data + len - sel_nl_sz &&
5803 !memcmp(p, sel_nl, sizeof(sel_nl))))
5808 for (i = 0; i < p - q; i++) {
5809 term->paste_buffer[term->paste_len++] = q[i];
5813 if (p <= data + len - sel_nl_sz &&
5814 !memcmp(p, sel_nl, sizeof(sel_nl))) {
5815 term->paste_buffer[term->paste_len++] = '\015';
5821 if (term->bracketed_paste) {
5822 memcpy(term->paste_buffer + term->paste_len,
5823 L"\033[201~", 6 * sizeof(wchar_t));
5824 term->paste_len += 6;
5827 /* Assume a small paste will be OK in one go. */
5828 if (term->paste_len < 256) {
5830 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
5831 if (term->paste_buffer)
5832 sfree(term->paste_buffer);
5833 term->paste_buffer = 0;
5834 term->paste_pos = term->paste_len = 0;
5837 get_clip(term->frontend, NULL, NULL);
5839 queue_toplevel_callback(term_paste_callback, term);
5842 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
5843 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
5847 int raw_mouse = (term->xterm_mouse &&
5848 !term->no_mouse_rep &&
5849 !(term->mouse_override && shift));
5850 int default_seltype;
5854 if (a == MA_DRAG && !raw_mouse)
5855 term_scroll(term, 0, -1);
5857 if (y >= term->rows) {
5859 if (a == MA_DRAG && !raw_mouse)
5860 term_scroll(term, 0, +1);
5869 if (x >= term->cols)
5872 selpoint.y = y + term->disptop;
5873 ldata = lineptr(selpoint.y);
5875 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM)
5879 * Transform x through the bidi algorithm to find the _logical_
5880 * click point from the physical one.
5882 if (term_bidi_line(term, ldata, y) != NULL) {
5883 x = term->post_bidi_cache[y].backward[x];
5890 * If we're in the middle of a selection operation, we ignore raw
5891 * mouse mode until it's done (we must have been not in raw mouse
5892 * mode when it started).
5893 * This makes use of Shift for selection reliable, and avoids the
5894 * host seeing mouse releases for which they never saw corresponding
5898 (term->selstate != ABOUT_TO) && (term->selstate != DRAGGING)) {
5899 int encstate = 0, r, c, wheel;
5907 encstate = 0x00; /* left button down */
5922 case MBT_WHEEL_DOWN:
5930 /* For mouse wheel buttons, we only ever expect to see
5931 * MA_CLICK actions, and we don't try to keep track of
5932 * the buttons being 'pressed' (since without matching
5933 * click/release pairs that's pointless). */
5938 if (term->xterm_mouse == 1)
5943 /* If multiple extensions are enabled, the xterm 1006 is used, so it's okay to check for only that */
5944 if (!term->xterm_extended_mouse)
5946 term->mouse_is_down = 0;
5949 if (term->mouse_is_down == braw)
5951 term->mouse_is_down = braw;
5963 /* Check the extensions in decreasing order of preference. Encoding the release event above assumes that 1006 comes first. */
5964 if (term->xterm_extended_mouse) {
5965 len = sprintf(abuf, "\033[<%d;%d;%d%c", encstate, c, r, a == MA_RELEASE ? 'm' : 'M');
5966 } else if (term->urxvt_extended_mouse) {
5967 len = sprintf(abuf, "\033[%d;%d;%dM", encstate + 32, c, r);
5968 } else if (c <= 223 && r <= 223) {
5969 len = sprintf(abuf, "\033[M%c%c%c", encstate + 32, c + 32, r + 32);
5971 ldisc_send(term->ldisc, abuf, len, 0);
5977 * Set the selection type (rectangular or normal) at the start
5978 * of a selection attempt, from the state of Alt.
5980 if (!alt ^ !term->rect_select)
5981 default_seltype = RECTANGULAR;
5983 default_seltype = LEXICOGRAPHIC;
5985 if (term->selstate == NO_SELECTION) {
5986 term->seltype = default_seltype;
5989 if (bcooked == MBT_SELECT && a == MA_CLICK) {
5991 term->selstate = ABOUT_TO;
5992 term->seltype = default_seltype;
5993 term->selanchor = selpoint;
5994 term->selmode = SM_CHAR;
5995 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
5997 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
5998 term->selstate = DRAGGING;
5999 term->selstart = term->selanchor = selpoint;
6000 term->selend = term->selstart;
6001 incpos(term->selend);
6003 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
6004 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
6005 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
6007 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
6008 term->selstate == SELECTED) {
6009 if (term->seltype == LEXICOGRAPHIC) {
6011 * For normal selection, we extend by moving
6012 * whichever end of the current selection is closer
6015 if (posdiff(selpoint, term->selstart) <
6016 posdiff(term->selend, term->selstart) / 2) {
6017 term->selanchor = term->selend;
6018 decpos(term->selanchor);
6020 term->selanchor = term->selstart;
6024 * For rectangular selection, we have a choice of
6025 * _four_ places to put selanchor and selpoint: the
6026 * four corners of the selection.
6028 if (2*selpoint.x < term->selstart.x + term->selend.x)
6029 term->selanchor.x = term->selend.x-1;
6031 term->selanchor.x = term->selstart.x;
6033 if (2*selpoint.y < term->selstart.y + term->selend.y)
6034 term->selanchor.y = term->selend.y;
6036 term->selanchor.y = term->selstart.y;
6038 term->selstate = DRAGGING;
6040 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
6041 term->selanchor = selpoint;
6042 term->selstate = DRAGGING;
6043 if (term->seltype == LEXICOGRAPHIC) {
6045 * For normal selection, we set (selstart,selend) to
6046 * (selpoint,selanchor) in some order.
6048 if (poslt(selpoint, term->selanchor)) {
6049 term->selstart = selpoint;
6050 term->selend = term->selanchor;
6051 incpos(term->selend);
6053 term->selstart = term->selanchor;
6054 term->selend = selpoint;
6055 incpos(term->selend);
6059 * For rectangular selection, we may need to
6060 * interchange x and y coordinates (if the user has
6061 * dragged in the -x and +y directions, or vice versa).
6063 term->selstart.x = min(term->selanchor.x, selpoint.x);
6064 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
6065 term->selstart.y = min(term->selanchor.y, selpoint.y);
6066 term->selend.y = max(term->selanchor.y, selpoint.y);
6069 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
6071 if (term->selstate == DRAGGING) {
6073 * We've completed a selection. We now transfer the
6074 * data to the clipboard.
6076 clipme(term, term->selstart, term->selend,
6077 (term->seltype == RECTANGULAR), FALSE);
6078 term->selstate = SELECTED;
6080 term->selstate = NO_SELECTION;
6081 } else if (bcooked == MBT_PASTE
6083 #if MULTICLICK_ONLY_EVENT
6084 || a == MA_2CLK || a == MA_3CLK
6087 request_paste(term->frontend);
6091 * Since terminal output is suppressed during drag-selects, we
6092 * should make sure to write any pending output if one has just
6095 if (term->selstate != DRAGGING)
6100 int format_arrow_key(char *buf, Terminal *term, int xkey, int ctrl)
6104 if (term->vt52_mode)
6105 p += sprintf((char *) p, "\x1B%c", xkey);
6107 int app_flg = (term->app_cursor_keys && !term->no_applic_c);
6110 * RDB: VT100 & VT102 manuals both state the app cursor
6111 * keys only work if the app keypad is on.
6113 * SGT: That may well be true, but xterm disagrees and so
6114 * does at least one application, so I've #if'ed this out
6115 * and the behaviour is back to PuTTY's original: app
6116 * cursor and app keypad are independently switchable
6117 * modes. If anyone complains about _this_ I'll have to
6118 * put in a configurable option.
6120 if (!term->app_keypad_keys)
6123 /* Useful mapping of Ctrl-arrows */
6128 p += sprintf((char *) p, "\x1BO%c", xkey);
6130 p += sprintf((char *) p, "\x1B[%c", xkey);
6136 void term_nopaste(Terminal *term)
6138 if (term->paste_len == 0)
6140 sfree(term->paste_buffer);
6141 term->paste_buffer = NULL;
6142 term->paste_len = 0;
6145 static void deselect(Terminal *term)
6147 term->selstate = NO_SELECTION;
6148 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
6151 void term_deselect(Terminal *term)
6157 * Since terminal output is suppressed during drag-selects, we
6158 * should make sure to write any pending output if one has just
6161 if (term->selstate != DRAGGING)
6165 int term_ldisc(Terminal *term, int option)
6167 if (option == LD_ECHO)
6168 return term->term_echoing;
6169 if (option == LD_EDIT)
6170 return term->term_editing;
6174 int term_data(Terminal *term, int is_stderr, const char *data, int len)
6176 bufchain_add(&term->inbuf, data, len);
6178 if (!term->in_term_out) {
6179 term->in_term_out = TRUE;
6180 term_reset_cblink(term);
6182 * During drag-selects, we do not process terminal input,
6183 * because the user will want the screen to hold still to
6186 if (term->selstate != DRAGGING)
6188 term->in_term_out = FALSE;
6192 * term_out() always completely empties inbuf. Therefore,
6193 * there's no reason at all to return anything other than zero
6194 * from this function, because there _can't_ be a question of
6195 * the remote side needing to wait until term_out() has cleared
6198 * This is a slightly suboptimal way to deal with SSH-2 - in
6199 * principle, the window mechanism would allow us to continue
6200 * to accept data on forwarded ports and X connections even
6201 * while the terminal processing was going slowly - but we
6202 * can't do the 100% right thing without moving the terminal
6203 * processing into a separate thread, and that might hurt
6204 * portability. So we manage stdout buffering the old SSH-1 way:
6205 * if the terminal processing goes slowly, the whole SSH
6206 * connection stops accepting data until it's ready.
6208 * In practice, I can't imagine this causing serious trouble.
6214 * Write untrusted data to the terminal.
6215 * The only control character that should be honoured is \n (which
6216 * will behave as a CRLF).
6218 int term_data_untrusted(Terminal *term, const char *data, int len)
6221 /* FIXME: more sophisticated checking? */
6222 for (i = 0; i < len; i++) {
6223 if (data[i] == '\n')
6224 term_data(term, 1, "\r\n", 2);
6225 else if (data[i] & 0x60)
6226 term_data(term, 1, data + i, 1);
6228 return 0; /* assumes that term_data() always returns 0 */
6231 void term_provide_logctx(Terminal *term, void *logctx)
6233 term->logctx = logctx;
6236 void term_set_focus(Terminal *term, int has_focus)
6238 term->has_focus = has_focus;
6239 term_schedule_cblink(term);
6243 * Provide "auto" settings for remote tty modes, suitable for an
6244 * application with a terminal window.
6246 char *term_get_ttymode(Terminal *term, const char *mode)
6249 if (strcmp(mode, "ERASE") == 0) {
6250 val = term->bksp_is_delete ? "^?" : "^H";
6252 /* FIXME: perhaps we should set ONLCR based on lfhascr as well? */
6253 /* FIXME: or ECHO and friends based on local echo state? */
6257 struct term_userpass_state {
6259 int done_prompt; /* printed out prompt yet? */
6260 size_t pos; /* cursor position */
6264 * Process some terminal data in the course of username/password
6267 int term_get_userpass_input(Terminal *term, prompts_t *p,
6268 unsigned char *in, int inlen)
6270 struct term_userpass_state *s = (struct term_userpass_state *)p->data;
6273 * First call. Set some stuff up.
6275 p->data = s = snew(struct term_userpass_state);
6278 /* We only print the `name' caption if we have to... */
6279 if (p->name_reqd && p->name) {
6280 size_t l = strlen(p->name);
6281 term_data_untrusted(term, p->name, l);
6282 if (p->name[l-1] != '\n')
6283 term_data_untrusted(term, "\n", 1);
6285 /* ...but we always print any `instruction'. */
6286 if (p->instruction) {
6287 size_t l = strlen(p->instruction);
6288 term_data_untrusted(term, p->instruction, l);
6289 if (p->instruction[l-1] != '\n')
6290 term_data_untrusted(term, "\n", 1);
6293 * Zero all the results, in case we abort half-way through.
6297 for (i = 0; i < (int)p->n_prompts; i++)
6298 prompt_set_result(p->prompts[i], "");
6302 while (s->curr_prompt < p->n_prompts) {
6304 prompt_t *pr = p->prompts[s->curr_prompt];
6305 int finished_prompt = 0;
6307 if (!s->done_prompt) {
6308 term_data_untrusted(term, pr->prompt, strlen(pr->prompt));
6313 /* Breaking out here ensures that the prompt is printed even
6314 * if we're now waiting for user data. */
6315 if (!in || !inlen) break;
6317 /* FIXME: should we be using local-line-editing code instead? */
6318 while (!finished_prompt && inlen) {
6324 term_data(term, 0, "\r\n", 2);
6325 prompt_ensure_result_size(pr, s->pos + 1);
6326 pr->result[s->pos] = '\0';
6327 /* go to next prompt, if any */
6330 finished_prompt = 1; /* break out */
6336 term_data(term, 0, "\b \b", 3);
6342 while (s->pos > 0) {
6344 term_data(term, 0, "\b \b", 3);
6350 /* Immediate abort. */
6351 term_data(term, 0, "\r\n", 2);
6354 return 0; /* user abort */
6357 * This simplistic check for printability is disabled
6358 * when we're doing password input, because some people
6359 * have control characters in their passwords.
6361 if (!pr->echo || (c >= ' ' && c <= '~') ||
6362 ((unsigned char) c >= 160)) {
6363 prompt_ensure_result_size(pr, s->pos + 1);
6364 pr->result[s->pos++] = c;
6366 term_data(term, 0, &c, 1);
6374 if (s->curr_prompt < p->n_prompts) {
6375 return -1; /* more data required */
6379 return +1; /* all done */