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->cfg.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->cfg.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, long now)
1070 Terminal *term = (Terminal *)ctx;
1073 if (term->tblink_pending && now - term->next_tblink >= 0) {
1074 term->tblinker = !term->tblinker;
1075 term->tblink_pending = FALSE;
1076 term_schedule_tblink(term);
1080 if (term->cblink_pending && now - term->next_cblink >= 0) {
1081 term->cblinker = !term->cblinker;
1082 term->cblink_pending = FALSE;
1083 term_schedule_cblink(term);
1087 if (term->in_vbell && now - term->vbell_end >= 0) {
1088 term->in_vbell = FALSE;
1093 (term->window_update_pending && now - term->next_update >= 0))
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->cfg.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 = term->cfg.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 = term->cfg.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 = term->cfg.app_cursor;
1220 term->app_keypad_keys = term->cfg.app_keypad;
1221 term->use_bce = term->cfg.bce;
1222 term->blink_is_real = term->cfg.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 set_raw_mouse_mode(term->frontend, FALSE);
1230 for (i = 0; i < 256; i++)
1231 term->wordness[i] = term->cfg.wordness[i];
1234 swap_screen(term, 1, FALSE, FALSE);
1235 erase_lots(term, FALSE, TRUE, TRUE);
1236 swap_screen(term, 0, FALSE, FALSE);
1238 erase_lots(term, FALSE, TRUE, TRUE);
1239 term->curs.y = find_last_nonempty_line(term, term->screen) + 1;
1240 if (term->curs.y == term->rows) {
1242 scroll(term, 0, term->rows - 1, 1, TRUE);
1248 term_schedule_tblink(term);
1249 term_schedule_cblink(term);
1253 * Force a screen update.
1255 void term_update(Terminal *term)
1259 term->window_update_pending = FALSE;
1261 ctx = get_ctx(term->frontend);
1263 int need_sbar_update = term->seen_disp_event;
1264 if (term->seen_disp_event && term->cfg.scroll_on_disp) {
1265 term->disptop = 0; /* return to main screen */
1266 term->seen_disp_event = 0;
1267 need_sbar_update = TRUE;
1270 if (need_sbar_update)
1272 do_paint(term, ctx, TRUE);
1273 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
1279 * Called from front end when a keypress occurs, to trigger
1280 * anything magical that needs to happen in that situation.
1282 void term_seen_key_event(Terminal *term)
1285 * On any keypress, clear the bell overload mechanism
1286 * completely, on the grounds that large numbers of
1287 * beeps coming from deliberate key action are likely
1288 * to be intended (e.g. beeps from filename completion
1289 * blocking repeatedly).
1291 term->beep_overloaded = FALSE;
1292 while (term->beephead) {
1293 struct beeptime *tmp = term->beephead;
1294 term->beephead = tmp->next;
1297 term->beeptail = NULL;
1301 * Reset the scrollback on keypress, if we're doing that.
1303 if (term->cfg.scroll_on_key) {
1304 term->disptop = 0; /* return to main screen */
1305 seen_disp_event(term);
1310 * Same as power_on(), but an external function.
1312 void term_pwron(Terminal *term, int clear)
1314 power_on(term, clear);
1315 if (term->ldisc) /* cause ldisc to notice changes */
1316 ldisc_send(term->ldisc, NULL, 0, 0);
1322 static void set_erase_char(Terminal *term)
1324 term->erase_char = term->basic_erase_char;
1326 term->erase_char.attr = (term->curr_attr &
1327 (ATTR_FGMASK | ATTR_BGMASK));
1331 * When the user reconfigures us, we need to check the forbidden-
1332 * alternate-screen config option, disable raw mouse mode if the
1333 * user has disabled mouse reporting, and abandon a print job if
1334 * the user has disabled printing.
1336 void term_reconfig(Terminal *term, Config *cfg)
1339 * Before adopting the new config, check all those terminal
1340 * settings which control power-on defaults; and if they've
1341 * changed, we will modify the current state as well as the
1342 * default one. The full list is: Auto wrap mode, DEC Origin
1343 * Mode, BCE, blinking text, character classes.
1345 int reset_wrap, reset_decom, reset_bce, reset_tblink, reset_charclass;
1348 reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode);
1349 reset_decom = (term->cfg.dec_om != cfg->dec_om);
1350 reset_bce = (term->cfg.bce != cfg->bce);
1351 reset_tblink = (term->cfg.blinktext != cfg->blinktext);
1352 reset_charclass = 0;
1353 for (i = 0; i < lenof(term->cfg.wordness); i++)
1354 if (term->cfg.wordness[i] != cfg->wordness[i])
1355 reset_charclass = 1;
1358 * If the bidi or shaping settings have changed, flush the bidi
1361 if (term->cfg.arabicshaping != cfg->arabicshaping ||
1362 term->cfg.bidi != cfg->bidi) {
1363 for (i = 0; i < term->bidi_cache_size; i++) {
1364 sfree(term->pre_bidi_cache[i].chars);
1365 sfree(term->post_bidi_cache[i].chars);
1366 term->pre_bidi_cache[i].width = -1;
1367 term->pre_bidi_cache[i].chars = NULL;
1368 term->post_bidi_cache[i].width = -1;
1369 term->post_bidi_cache[i].chars = NULL;
1373 term->cfg = *cfg; /* STRUCTURE COPY */
1376 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1378 term->alt_om = term->dec_om = term->cfg.dec_om;
1380 term->use_bce = term->cfg.bce;
1381 set_erase_char(term);
1384 term->blink_is_real = term->cfg.blinktext;
1386 if (reset_charclass)
1387 for (i = 0; i < 256; i++)
1388 term->wordness[i] = term->cfg.wordness[i];
1390 if (term->cfg.no_alt_screen)
1391 swap_screen(term, 0, FALSE, FALSE);
1392 if (term->cfg.no_mouse_rep) {
1393 term->xterm_mouse = 0;
1394 set_raw_mouse_mode(term->frontend, 0);
1396 if (term->cfg.no_remote_charset) {
1397 term->cset_attr[0] = term->cset_attr[1] = CSET_ASCII;
1398 term->sco_acs = term->alt_sco_acs = 0;
1401 if (!*term->cfg.printer) {
1402 term_print_finish(term);
1404 term_schedule_tblink(term);
1405 term_schedule_cblink(term);
1409 * Clear the scrollback.
1411 void term_clrsb(Terminal *term)
1413 unsigned char *line;
1415 while ((line = delpos234(term->scrollback, 0)) != NULL) {
1416 sfree(line); /* this is compressed data, not a termline */
1418 term->tempsblines = 0;
1419 term->alt_sblines = 0;
1424 * Initialise the terminal.
1426 Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
1432 * Allocate a new Terminal structure and initialise the fields
1435 term = snew(Terminal);
1436 term->frontend = frontend;
1437 term->ucsdata = ucsdata;
1438 term->cfg = *mycfg; /* STRUCTURE COPY */
1439 term->logctx = NULL;
1440 term->compatibility_level = TM_PUTTY;
1441 strcpy(term->id_string, "\033[?6c");
1442 term->cblink_pending = term->tblink_pending = FALSE;
1443 term->paste_buffer = NULL;
1444 term->paste_len = 0;
1445 term->last_paste = 0;
1446 bufchain_init(&term->inbuf);
1447 bufchain_init(&term->printer_buf);
1448 term->printing = term->only_printing = FALSE;
1449 term->print_job = NULL;
1450 term->vt52_mode = FALSE;
1451 term->cr_lf_return = FALSE;
1452 term->seen_disp_event = FALSE;
1453 term->mouse_is_down = FALSE;
1454 term->reset_132 = FALSE;
1455 term->cblinker = term->tblinker = 0;
1456 term->has_focus = 1;
1457 term->repeat_off = FALSE;
1458 term->termstate = TOPLEVEL;
1459 term->selstate = NO_SELECTION;
1462 term->screen = term->alt_screen = term->scrollback = NULL;
1463 term->tempsblines = 0;
1464 term->alt_sblines = 0;
1466 term->disptext = NULL;
1467 term->dispcursx = term->dispcursy = -1;
1470 term->rows = term->cols = -1;
1471 power_on(term, TRUE);
1472 term->beephead = term->beeptail = NULL;
1473 #ifdef OPTIMISE_SCROLL
1474 term->scrollhead = term->scrolltail = NULL;
1475 #endif /* OPTIMISE_SCROLL */
1477 term->lastbeep = FALSE;
1478 term->beep_overloaded = FALSE;
1479 term->attr_mask = 0xffffffff;
1480 term->resize_fn = NULL;
1481 term->resize_ctx = NULL;
1482 term->in_term_out = FALSE;
1484 term->ltemp_size = 0;
1485 term->wcFrom = NULL;
1487 term->wcFromTo_size = 0;
1489 term->window_update_pending = FALSE;
1491 term->bidi_cache_size = 0;
1492 term->pre_bidi_cache = term->post_bidi_cache = NULL;
1495 term->basic_erase_char.chr = CSET_ASCII | ' ';
1496 term->basic_erase_char.attr = ATTR_DEFAULT;
1497 term->basic_erase_char.cc_next = 0;
1498 term->erase_char = term->basic_erase_char;
1503 void term_free(Terminal *term)
1506 struct beeptime *beep;
1509 while ((line = delpos234(term->scrollback, 0)) != NULL)
1510 sfree(line); /* compressed data, not a termline */
1511 freetree234(term->scrollback);
1512 while ((line = delpos234(term->screen, 0)) != NULL)
1514 freetree234(term->screen);
1515 while ((line = delpos234(term->alt_screen, 0)) != NULL)
1517 freetree234(term->alt_screen);
1518 if (term->disptext) {
1519 for (i = 0; i < term->rows; i++)
1520 freeline(term->disptext[i]);
1522 sfree(term->disptext);
1523 while (term->beephead) {
1524 beep = term->beephead;
1525 term->beephead = beep->next;
1528 bufchain_clear(&term->inbuf);
1530 printer_finish_job(term->print_job);
1531 bufchain_clear(&term->printer_buf);
1532 sfree(term->paste_buffer);
1534 sfree(term->wcFrom);
1537 for (i = 0; i < term->bidi_cache_size; i++) {
1538 sfree(term->pre_bidi_cache[i].chars);
1539 sfree(term->post_bidi_cache[i].chars);
1541 sfree(term->pre_bidi_cache);
1542 sfree(term->post_bidi_cache);
1544 expire_timer_context(term);
1550 * Set up the terminal for a given size.
1552 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
1555 termline **newdisp, *line;
1556 int i, j, oldrows = term->rows;
1558 int save_alt_which = term->alt_which;
1560 if (newrows == term->rows && newcols == term->cols &&
1561 newsavelines == term->savelines)
1562 return; /* nothing to do */
1564 /* Behave sensibly if we're given zero (or negative) rows/cols */
1566 if (newrows < 1) newrows = 1;
1567 if (newcols < 1) newcols = 1;
1570 swap_screen(term, 0, FALSE, FALSE);
1572 term->alt_t = term->marg_t = 0;
1573 term->alt_b = term->marg_b = newrows - 1;
1575 if (term->rows == -1) {
1576 term->scrollback = newtree234(NULL);
1577 term->screen = newtree234(NULL);
1578 term->tempsblines = 0;
1583 * Resize the screen and scrollback. We only need to shift
1584 * lines around within our data structures, because lineptr()
1585 * will take care of resizing each individual line if
1588 * - If the new screen is longer, we shunt lines in from temporary
1589 * scrollback if possible, otherwise we add new blank lines at
1592 * - If the new screen is shorter, we remove any blank lines at
1593 * the bottom if possible, otherwise shunt lines above the cursor
1594 * to scrollback if possible, otherwise delete lines below the
1597 * - Then, if the new scrollback length is less than the
1598 * amount of scrollback we actually have, we must throw some
1601 sblen = count234(term->scrollback);
1602 /* Do this loop to expand the screen if newrows > rows */
1603 assert(term->rows == count234(term->screen));
1604 while (term->rows < newrows) {
1605 if (term->tempsblines > 0) {
1606 unsigned char *cline;
1607 /* Insert a line from the scrollback at the top of the screen. */
1608 assert(sblen >= term->tempsblines);
1609 cline = delpos234(term->scrollback, --sblen);
1610 line = decompressline(cline, NULL);
1612 line->temporary = FALSE; /* reconstituted line is now real */
1613 term->tempsblines -= 1;
1614 addpos234(term->screen, line, 0);
1616 term->savecurs.y += 1;
1618 term->alt_savecurs.y += 1;
1620 /* Add a new blank line at the bottom of the screen. */
1621 line = newline(term, newcols, FALSE);
1622 addpos234(term->screen, line, count234(term->screen));
1626 /* Do this loop to shrink the screen if newrows < rows */
1627 while (term->rows > newrows) {
1628 if (term->curs.y < term->rows - 1) {
1629 /* delete bottom row, unless it contains the cursor */
1630 sfree(delpos234(term->screen, term->rows - 1));
1632 /* push top row to scrollback */
1633 line = delpos234(term->screen, 0);
1634 addpos234(term->scrollback, compressline(line), sblen++);
1636 term->tempsblines += 1;
1638 term->savecurs.y -= 1;
1640 term->alt_savecurs.y -= 1;
1644 assert(term->rows == newrows);
1645 assert(count234(term->screen) == newrows);
1647 /* Delete any excess lines from the scrollback. */
1648 while (sblen > newsavelines) {
1649 line = delpos234(term->scrollback, 0);
1653 if (sblen < term->tempsblines)
1654 term->tempsblines = sblen;
1655 assert(count234(term->scrollback) <= newsavelines);
1656 assert(count234(term->scrollback) >= term->tempsblines);
1659 /* Make a new displayed text buffer. */
1660 newdisp = snewn(newrows, termline *);
1661 for (i = 0; i < newrows; i++) {
1662 newdisp[i] = newline(term, newcols, FALSE);
1663 for (j = 0; j < newcols; j++)
1664 newdisp[i]->chars[j].attr = ATTR_INVALID;
1666 if (term->disptext) {
1667 for (i = 0; i < oldrows; i++)
1668 freeline(term->disptext[i]);
1670 sfree(term->disptext);
1671 term->disptext = newdisp;
1672 term->dispcursx = term->dispcursy = -1;
1674 /* Make a new alternate screen. */
1675 newalt = newtree234(NULL);
1676 for (i = 0; i < newrows; i++) {
1677 line = newline(term, newcols, TRUE);
1678 addpos234(newalt, line, i);
1680 if (term->alt_screen) {
1681 while (NULL != (line = delpos234(term->alt_screen, 0)))
1683 freetree234(term->alt_screen);
1685 term->alt_screen = newalt;
1686 term->alt_sblines = 0;
1688 term->tabs = sresize(term->tabs, newcols, unsigned char);
1691 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
1692 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1695 /* Check that the cursor positions are still valid. */
1696 if (term->savecurs.y < 0)
1697 term->savecurs.y = 0;
1698 if (term->savecurs.y >= newrows)
1699 term->savecurs.y = newrows - 1;
1700 if (term->savecurs.x >= newcols)
1701 term->savecurs.x = newcols - 1;
1702 if (term->alt_savecurs.y < 0)
1703 term->alt_savecurs.y = 0;
1704 if (term->alt_savecurs.y >= newrows)
1705 term->alt_savecurs.y = newrows - 1;
1706 if (term->alt_savecurs.x >= newcols)
1707 term->alt_savecurs.x = newcols - 1;
1708 if (term->curs.y < 0)
1710 if (term->curs.y >= newrows)
1711 term->curs.y = newrows - 1;
1712 if (term->curs.x >= newcols)
1713 term->curs.x = newcols - 1;
1714 if (term->alt_y < 0)
1716 if (term->alt_y >= newrows)
1717 term->alt_y = newrows - 1;
1718 if (term->alt_x >= newcols)
1719 term->alt_x = newcols - 1;
1720 term->alt_x = term->alt_y = 0;
1721 term->wrapnext = term->alt_wnext = FALSE;
1723 term->rows = newrows;
1724 term->cols = newcols;
1725 term->savelines = newsavelines;
1727 swap_screen(term, save_alt_which, FALSE, FALSE);
1731 if (term->resize_fn)
1732 term->resize_fn(term->resize_ctx, term->cols, term->rows);
1736 * Hand a function and context pointer to the terminal which it can
1737 * use to notify a back end of resizes.
1739 void term_provide_resize_fn(Terminal *term,
1740 void (*resize_fn)(void *, int, int),
1743 term->resize_fn = resize_fn;
1744 term->resize_ctx = resize_ctx;
1745 if (resize_fn && term->cols > 0 && term->rows > 0)
1746 resize_fn(resize_ctx, term->cols, term->rows);
1749 /* Find the bottom line on the screen that has any content.
1750 * If only the top line has content, returns 0.
1751 * If no lines have content, return -1.
1753 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
1756 for (i = count234(screen) - 1; i >= 0; i--) {
1757 termline *line = index234(screen, i);
1759 for (j = 0; j < line->cols; j++)
1760 if (!termchars_equal(&line->chars[j], &term->erase_char))
1762 if (j != line->cols) break;
1768 * Swap screens. If `reset' is TRUE and we have been asked to
1769 * switch to the alternate screen, we must bring most of its
1770 * configuration from the main screen and erase the contents of the
1771 * alternate screen completely. (This is even true if we're already
1772 * on it! Blame xterm.)
1774 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
1781 reset = FALSE; /* do no weird resetting if which==0 */
1783 if (which != term->alt_which) {
1784 term->alt_which = which;
1786 ttr = term->alt_screen;
1787 term->alt_screen = term->screen;
1789 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
1791 if (!reset && !keep_cur_pos)
1792 term->curs.x = term->alt_x;
1795 if (!reset && !keep_cur_pos)
1796 term->curs.y = term->alt_y;
1799 if (!reset) term->marg_t = term->alt_t;
1802 if (!reset) term->marg_b = term->alt_b;
1805 if (!reset) term->dec_om = term->alt_om;
1808 if (!reset) term->wrap = term->alt_wrap;
1811 if (!reset) term->wrapnext = term->alt_wnext;
1812 term->alt_wnext = t;
1814 if (!reset) term->insert = term->alt_ins;
1817 if (!reset) term->cset = term->alt_cset;
1820 if (!reset) term->utf = term->alt_utf;
1823 if (!reset) term->sco_acs = term->alt_sco_acs;
1824 term->alt_sco_acs = t;
1826 tp = term->savecurs;
1827 if (!reset && !keep_cur_pos)
1828 term->savecurs = term->alt_savecurs;
1829 term->alt_savecurs = tp;
1830 t = term->save_cset;
1831 if (!reset && !keep_cur_pos)
1832 term->save_cset = term->alt_save_cset;
1833 term->alt_save_cset = t;
1834 t = term->save_csattr;
1835 if (!reset && !keep_cur_pos)
1836 term->save_csattr = term->alt_save_csattr;
1837 term->alt_save_csattr = t;
1838 t = term->save_attr;
1839 if (!reset && !keep_cur_pos)
1840 term->save_attr = term->alt_save_attr;
1841 term->alt_save_attr = t;
1843 if (!reset && !keep_cur_pos)
1844 term->save_utf = term->alt_save_utf;
1845 term->alt_save_utf = t;
1846 t = term->save_wnext;
1847 if (!reset && !keep_cur_pos)
1848 term->save_wnext = term->alt_save_wnext;
1849 term->alt_save_wnext = t;
1850 t = term->save_sco_acs;
1851 if (!reset && !keep_cur_pos)
1852 term->save_sco_acs = term->alt_save_sco_acs;
1853 term->alt_save_sco_acs = t;
1856 if (reset && term->screen) {
1858 * Yes, this _is_ supposed to honour background-colour-erase.
1860 erase_lots(term, FALSE, TRUE, TRUE);
1865 * Update the scroll bar.
1867 static void update_sbar(Terminal *term)
1869 int nscroll = sblines(term);
1870 set_sbar(term->frontend, nscroll + term->rows,
1871 nscroll + term->disptop, term->rows);
1875 * Check whether the region bounded by the two pointers intersects
1876 * the scroll region, and de-select the on-screen selection if so.
1878 static void check_selection(Terminal *term, pos from, pos to)
1880 if (poslt(from, term->selend) && poslt(term->selstart, to))
1885 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1886 * for backward.) `sb' is TRUE if the scrolling is permitted to
1887 * affect the scrollback buffer.
1889 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
1892 int i, seltop, olddisptop, shift;
1894 if (topline != 0 || term->alt_which != 0)
1897 olddisptop = term->disptop;
1901 line = delpos234(term->screen, botline);
1902 resizeline(term, line, term->cols);
1903 for (i = 0; i < term->cols; i++)
1904 copy_termchar(line, i, &term->erase_char);
1905 line->lattr = LATTR_NORM;
1906 addpos234(term->screen, line, topline);
1908 if (term->selstart.y >= topline && term->selstart.y <= botline) {
1910 if (term->selstart.y > botline) {
1911 term->selstart.y = botline + 1;
1912 term->selstart.x = 0;
1915 if (term->selend.y >= topline && term->selend.y <= botline) {
1917 if (term->selend.y > botline) {
1918 term->selend.y = botline + 1;
1927 line = delpos234(term->screen, topline);
1928 #ifdef TERM_CC_DIAGS
1931 if (sb && term->savelines > 0) {
1932 int sblen = count234(term->scrollback);
1934 * We must add this line to the scrollback. We'll
1935 * remove a line from the top of the scrollback if
1936 * the scrollback is full.
1938 if (sblen == term->savelines) {
1939 unsigned char *cline;
1942 cline = delpos234(term->scrollback, 0);
1945 term->tempsblines += 1;
1947 addpos234(term->scrollback, compressline(line), sblen);
1949 /* now `line' itself can be reused as the bottom line */
1952 * If the user is currently looking at part of the
1953 * scrollback, and they haven't enabled any options
1954 * that are going to reset the scrollback as a
1955 * result of this movement, then the chances are
1956 * they'd like to keep looking at the same line. So
1957 * we move their viewpoint at the same rate as the
1958 * scroll, at least until their viewpoint hits the
1959 * top end of the scrollback buffer, at which point
1960 * we don't have the choice any more.
1962 * Thanks to Jan Holmen Holsten for the idea and
1963 * initial implementation.
1965 if (term->disptop > -term->savelines && term->disptop < 0)
1968 resizeline(term, line, term->cols);
1969 for (i = 0; i < term->cols; i++)
1970 copy_termchar(line, i, &term->erase_char);
1971 line->lattr = LATTR_NORM;
1972 addpos234(term->screen, line, botline);
1975 * If the selection endpoints move into the scrollback,
1976 * we keep them moving until they hit the top. However,
1977 * of course, if the line _hasn't_ moved into the
1978 * scrollback then we don't do this, and cut them off
1979 * at the top of the scroll region.
1981 * This applies to selstart and selend (for an existing
1982 * selection), and also selanchor (for one being
1983 * selected as we speak).
1985 seltop = sb ? -term->savelines : topline;
1987 if (term->selstate != NO_SELECTION) {
1988 if (term->selstart.y >= seltop &&
1989 term->selstart.y <= botline) {
1991 if (term->selstart.y < seltop) {
1992 term->selstart.y = seltop;
1993 term->selstart.x = 0;
1996 if (term->selend.y >= seltop && term->selend.y <= botline) {
1998 if (term->selend.y < seltop) {
1999 term->selend.y = seltop;
2003 if (term->selanchor.y >= seltop &&
2004 term->selanchor.y <= botline) {
2005 term->selanchor.y--;
2006 if (term->selanchor.y < seltop) {
2007 term->selanchor.y = seltop;
2008 term->selanchor.x = 0;
2016 #ifdef OPTIMISE_SCROLL
2017 shift += term->disptop - olddisptop;
2018 if (shift < term->rows && shift > -term->rows && shift != 0)
2019 scroll_display(term, topline, botline, shift);
2020 #endif /* OPTIMISE_SCROLL */
2023 #ifdef OPTIMISE_SCROLL
2025 * Add a scroll of a region on the screen into the pending scroll list.
2026 * `lines' is +ve for scrolling forward, -ve for backward.
2028 * If the scroll is on the same area as the last scroll in the list,
2031 static void save_scroll(Terminal *term, int topline, int botline, int lines)
2033 struct scrollregion *newscroll;
2034 if (term->scrolltail &&
2035 term->scrolltail->topline == topline &&
2036 term->scrolltail->botline == botline) {
2037 term->scrolltail->lines += lines;
2039 newscroll = snew(struct scrollregion);
2040 newscroll->topline = topline;
2041 newscroll->botline = botline;
2042 newscroll->lines = lines;
2043 newscroll->next = NULL;
2045 if (!term->scrollhead)
2046 term->scrollhead = newscroll;
2048 term->scrolltail->next = newscroll;
2049 term->scrolltail = newscroll;
2054 * Scroll the physical display, and our conception of it in disptext.
2056 static void scroll_display(Terminal *term, int topline, int botline, int lines)
2058 int distance, nlines, i, j;
2060 distance = lines > 0 ? lines : -lines;
2061 nlines = botline - topline + 1 - distance;
2063 for (i = 0; i < nlines; i++)
2064 for (j = 0; j < term->cols; j++)
2065 copy_termchar(term->disptext[i], j,
2066 term->disptext[i+distance]->chars+j);
2067 if (term->dispcursy >= 0 &&
2068 term->dispcursy >= topline + distance &&
2069 term->dispcursy < topline + distance + nlines)
2070 term->dispcursy -= distance;
2071 for (i = 0; i < distance; i++)
2072 for (j = 0; j < term->cols; j++)
2073 term->disptext[nlines+i]->chars[j].attr |= ATTR_INVALID;
2075 for (i = nlines; i-- ;)
2076 for (j = 0; j < term->cols; j++)
2077 copy_termchar(term->disptext[i+distance], j,
2078 term->disptext[i]->chars+j);
2079 if (term->dispcursy >= 0 &&
2080 term->dispcursy >= topline &&
2081 term->dispcursy < topline + nlines)
2082 term->dispcursy += distance;
2083 for (i = 0; i < distance; i++)
2084 for (j = 0; j < term->cols; j++)
2085 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
2087 save_scroll(term, topline, botline, lines);
2089 #endif /* OPTIMISE_SCROLL */
2092 * Move the cursor to a given position, clipping at boundaries. We
2093 * may or may not want to clip at the scroll margin: marg_clip is 0
2094 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
2095 * even _being_ outside the margins.
2097 static void move(Terminal *term, int x, int y, int marg_clip)
2101 if (x >= term->cols)
2104 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
2107 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
2113 if (y >= term->rows)
2117 term->wrapnext = FALSE;
2121 * Save or restore the cursor and SGR mode.
2123 static void save_cursor(Terminal *term, int save)
2126 term->savecurs = term->curs;
2127 term->save_attr = term->curr_attr;
2128 term->save_cset = term->cset;
2129 term->save_utf = term->utf;
2130 term->save_wnext = term->wrapnext;
2131 term->save_csattr = term->cset_attr[term->cset];
2132 term->save_sco_acs = term->sco_acs;
2134 term->curs = term->savecurs;
2135 /* Make sure the window hasn't shrunk since the save */
2136 if (term->curs.x >= term->cols)
2137 term->curs.x = term->cols - 1;
2138 if (term->curs.y >= term->rows)
2139 term->curs.y = term->rows - 1;
2141 term->curr_attr = term->save_attr;
2142 term->cset = term->save_cset;
2143 term->utf = term->save_utf;
2144 term->wrapnext = term->save_wnext;
2146 * wrapnext might reset to False if the x position is no
2147 * longer at the rightmost edge.
2149 if (term->wrapnext && term->curs.x < term->cols-1)
2150 term->wrapnext = FALSE;
2151 term->cset_attr[term->cset] = term->save_csattr;
2152 term->sco_acs = term->save_sco_acs;
2153 set_erase_char(term);
2158 * This function is called before doing _anything_ which affects
2159 * only part of a line of text. It is used to mark the boundary
2160 * between two character positions, and it indicates that some sort
2161 * of effect is going to happen on only one side of that boundary.
2163 * The effect of this function is to check whether a CJK
2164 * double-width character is straddling the boundary, and to remove
2165 * it and replace it with two spaces if so. (Of course, one or
2166 * other of those spaces is then likely to be replaced with
2167 * something else again, as a result of whatever happens next.)
2169 * Also, if the boundary is at the right-hand _edge_ of the screen,
2170 * it implies something deliberate is being done to the rightmost
2171 * column position; hence we must clear LATTR_WRAPPED2.
2173 * The input to the function is the coordinates of the _second_
2174 * character of the pair.
2176 static void check_boundary(Terminal *term, int x, int y)
2180 /* Validate input coordinates, just in case. */
2181 if (x == 0 || x > term->cols)
2184 ldata = scrlineptr(y);
2185 if (x == term->cols) {
2186 ldata->lattr &= ~LATTR_WRAPPED2;
2188 if (ldata->chars[x].chr == UCSWIDE) {
2189 clear_cc(ldata, x-1);
2191 ldata->chars[x-1].chr = ' ' | CSET_ASCII;
2192 ldata->chars[x] = ldata->chars[x-1];
2198 * Erase a large portion of the screen: the whole screen, or the
2199 * whole line, or parts thereof.
2201 static void erase_lots(Terminal *term,
2202 int line_only, int from_begin, int to_end)
2206 int erasing_lines_from_top = 0;
2209 start.y = term->curs.y;
2211 end.y = term->curs.y + 1;
2213 erase_lattr = FALSE;
2228 if (!from_begin || !to_end)
2229 check_boundary(term, term->curs.x, term->curs.y);
2230 check_selection(term, start, end);
2232 /* Clear screen also forces a full window redraw, just in case. */
2233 if (start.y == 0 && start.x == 0 && end.y == term->rows)
2234 term_invalidate(term);
2236 /* Lines scrolled away shouldn't be brought back on if the terminal
2238 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
2239 erasing_lines_from_top = 1;
2241 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
2242 /* If it's a whole number of lines, starting at the top, and
2243 * we're fully erasing them, erase by scrolling and keep the
2244 * lines in the scrollback. */
2245 int scrolllines = end.y;
2246 if (end.y == term->rows) {
2247 /* Shrink until we find a non-empty row.*/
2248 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
2250 if (scrolllines > 0)
2251 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
2253 termline *ldata = scrlineptr(start.y);
2254 while (poslt(start, end)) {
2255 if (start.x == term->cols) {
2257 ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
2259 ldata->lattr = LATTR_NORM;
2261 copy_termchar(ldata, start.x, &term->erase_char);
2263 if (incpos(start) && start.y < term->rows) {
2264 ldata = scrlineptr(start.y);
2269 /* After an erase of lines from the top of the screen, we shouldn't
2270 * bring the lines back again if the terminal enlarges (since the user or
2271 * application has explictly thrown them away). */
2272 if (erasing_lines_from_top && !(term->alt_which))
2273 term->tempsblines = 0;
2277 * Insert or delete characters within the current line. n is +ve if
2278 * insertion is desired, and -ve for deletion.
2280 static void insch(Terminal *term, int n)
2282 int dir = (n < 0 ? -1 : +1);
2287 n = (n < 0 ? -n : n);
2288 if (n > term->cols - term->curs.x)
2289 n = term->cols - term->curs.x;
2290 m = term->cols - term->curs.x - n;
2291 cursplus.y = term->curs.y;
2292 cursplus.x = term->curs.x + n;
2293 check_selection(term, term->curs, cursplus);
2294 check_boundary(term, term->curs.x, term->curs.y);
2296 check_boundary(term, term->curs.x + n, term->curs.y);
2297 ldata = scrlineptr(term->curs.y);
2299 for (j = 0; j < m; j++)
2300 move_termchar(ldata,
2301 ldata->chars + term->curs.x + j,
2302 ldata->chars + term->curs.x + j + n);
2304 copy_termchar(ldata, term->curs.x + m++, &term->erase_char);
2307 move_termchar(ldata,
2308 ldata->chars + term->curs.x + j + n,
2309 ldata->chars + term->curs.x + j);
2311 copy_termchar(ldata, term->curs.x + n, &term->erase_char);
2316 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2317 * whether the mode is a DEC private one or a normal one.)
2319 static void toggle_mode(Terminal *term, int mode, int query, int state)
2323 case 1: /* DECCKM: application cursor keys */
2324 term->app_cursor_keys = state;
2326 case 2: /* DECANM: VT52 mode */
2327 term->vt52_mode = !state;
2328 if (term->vt52_mode) {
2329 term->blink_is_real = FALSE;
2330 term->vt52_bold = FALSE;
2332 term->blink_is_real = term->cfg.blinktext;
2334 term_schedule_tblink(term);
2336 case 3: /* DECCOLM: 80/132 columns */
2338 if (!term->cfg.no_remote_resize)
2339 request_resize(term->frontend, state ? 132 : 80, term->rows);
2340 term->reset_132 = state;
2341 term->alt_t = term->marg_t = 0;
2342 term->alt_b = term->marg_b = term->rows - 1;
2343 move(term, 0, 0, 0);
2344 erase_lots(term, FALSE, TRUE, TRUE);
2346 case 5: /* DECSCNM: reverse video */
2348 * Toggle reverse video. If we receive an OFF within the
2349 * visual bell timeout period after an ON, we trigger an
2350 * effective visual bell, so that ESC[?5hESC[?5l will
2351 * always be an actually _visible_ visual bell.
2353 if (term->rvideo && !state) {
2354 /* This is an OFF, so set up a vbell */
2355 term_schedule_vbell(term, TRUE, term->rvbell_startpoint);
2356 } else if (!term->rvideo && state) {
2357 /* This is an ON, so we notice the time and save it. */
2358 term->rvbell_startpoint = GETTICKCOUNT();
2360 term->rvideo = state;
2361 seen_disp_event(term);
2363 case 6: /* DECOM: DEC origin mode */
2364 term->dec_om = state;
2366 case 7: /* DECAWM: auto wrap */
2369 case 8: /* DECARM: auto key repeat */
2370 term->repeat_off = !state;
2372 case 10: /* DECEDM: set local edit mode */
2373 term->term_editing = state;
2374 if (term->ldisc) /* cause ldisc to notice changes */
2375 ldisc_send(term->ldisc, NULL, 0, 0);
2377 case 25: /* DECTCEM: enable/disable cursor */
2378 compatibility2(OTHER, VT220);
2379 term->cursor_on = state;
2380 seen_disp_event(term);
2382 case 47: /* alternate screen */
2383 compatibility(OTHER);
2385 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
2388 case 1000: /* xterm mouse 1 (normal) */
2389 term->xterm_mouse = state ? 1 : 0;
2390 set_raw_mouse_mode(term->frontend, state);
2392 case 1002: /* xterm mouse 2 (inc. button drags) */
2393 term->xterm_mouse = state ? 2 : 0;
2394 set_raw_mouse_mode(term->frontend, state);
2396 case 1047: /* alternate screen */
2397 compatibility(OTHER);
2399 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
2402 case 1048: /* save/restore cursor */
2403 if (!term->cfg.no_alt_screen)
2404 save_cursor(term, state);
2405 if (!state) seen_disp_event(term);
2407 case 1049: /* cursor & alternate screen */
2408 if (state && !term->cfg.no_alt_screen)
2409 save_cursor(term, state);
2410 if (!state) seen_disp_event(term);
2411 compatibility(OTHER);
2413 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
2414 if (!state && !term->cfg.no_alt_screen)
2415 save_cursor(term, state);
2420 case 4: /* IRM: set insert mode */
2421 compatibility(VT102);
2422 term->insert = state;
2424 case 12: /* SRM: set echo mode */
2425 term->term_echoing = !state;
2426 if (term->ldisc) /* cause ldisc to notice changes */
2427 ldisc_send(term->ldisc, NULL, 0, 0);
2429 case 20: /* LNM: Return sends ... */
2430 term->cr_lf_return = state;
2432 case 34: /* WYULCURM: Make cursor BIG */
2433 compatibility2(OTHER, VT220);
2434 term->big_cursor = !state;
2439 * Process an OSC sequence: set window title or icon name.
2441 static void do_osc(Terminal *term)
2444 while (term->osc_strlen--)
2445 term->wordness[(unsigned char)
2446 term->osc_string[term->osc_strlen]] = term->esc_args[0];
2448 term->osc_string[term->osc_strlen] = '\0';
2449 switch (term->esc_args[0]) {
2452 if (!term->cfg.no_remote_wintitle)
2453 set_icon(term->frontend, term->osc_string);
2454 if (term->esc_args[0] == 1)
2456 /* fall through: parameter 0 means set both */
2459 if (!term->cfg.no_remote_wintitle)
2460 set_title(term->frontend, term->osc_string);
2467 * ANSI printing routines.
2469 static void term_print_setup(Terminal *term)
2471 bufchain_clear(&term->printer_buf);
2472 term->print_job = printer_start_job(term->cfg.printer);
2474 static void term_print_flush(Terminal *term)
2479 while ((size = bufchain_size(&term->printer_buf)) > 5) {
2480 bufchain_prefix(&term->printer_buf, &data, &len);
2483 printer_job_data(term->print_job, data, len);
2484 bufchain_consume(&term->printer_buf, len);
2487 static void term_print_finish(Terminal *term)
2493 if (!term->printing && !term->only_printing)
2494 return; /* we need do nothing */
2496 term_print_flush(term);
2497 while ((size = bufchain_size(&term->printer_buf)) > 0) {
2498 bufchain_prefix(&term->printer_buf, &data, &len);
2500 if (c == '\033' || c == '\233') {
2501 bufchain_consume(&term->printer_buf, size);
2504 printer_job_data(term->print_job, &c, 1);
2505 bufchain_consume(&term->printer_buf, 1);
2508 printer_finish_job(term->print_job);
2509 term->print_job = NULL;
2510 term->printing = term->only_printing = FALSE;
2514 * Remove everything currently in `inbuf' and stick it up on the
2515 * in-memory display. There's a big state machine in here to
2516 * process escape sequences...
2518 static void term_out(Terminal *term)
2522 unsigned char localbuf[256], *chars;
2527 chars = NULL; /* placate compiler warnings */
2528 while (nchars > 0 || unget != -1 || bufchain_size(&term->inbuf) > 0) {
2532 bufchain_prefix(&term->inbuf, &ret, &nchars);
2533 if (nchars > sizeof(localbuf))
2534 nchars = sizeof(localbuf);
2535 memcpy(localbuf, ret, nchars);
2536 bufchain_consume(&term->inbuf, nchars);
2538 assert(chars != NULL);
2544 * Optionally log the session traffic to a file. Useful for
2545 * debugging and possibly also useful for actual logging.
2547 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
2548 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
2554 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2555 * be able to display 8-bit characters, but I'll let that go 'cause
2560 * If we're printing, add the character to the printer
2563 if (term->printing) {
2564 bufchain_add(&term->printer_buf, &c, 1);
2567 * If we're in print-only mode, we use a much simpler
2568 * state machine designed only to recognise the ESC[4i
2569 * termination sequence.
2571 if (term->only_printing) {
2573 term->print_state = 1;
2574 else if (c == (unsigned char)'\233')
2575 term->print_state = 2;
2576 else if (c == '[' && term->print_state == 1)
2577 term->print_state = 2;
2578 else if (c == '4' && term->print_state == 2)
2579 term->print_state = 3;
2580 else if (c == 'i' && term->print_state == 3)
2581 term->print_state = 4;
2583 term->print_state = 0;
2584 if (term->print_state == 4) {
2585 term_print_finish(term);
2591 /* First see about all those translations. */
2592 if (term->termstate == TOPLEVEL) {
2594 switch (term->utf_state) {
2597 /* UTF-8 must be stateless so we ignore iso2022. */
2598 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2599 c = term->ucsdata->unitab_ctrl[c];
2600 else c = ((unsigned char)c) | CSET_ASCII;
2602 } else if ((c & 0xe0) == 0xc0) {
2603 term->utf_size = term->utf_state = 1;
2604 term->utf_char = (c & 0x1f);
2605 } else if ((c & 0xf0) == 0xe0) {
2606 term->utf_size = term->utf_state = 2;
2607 term->utf_char = (c & 0x0f);
2608 } else if ((c & 0xf8) == 0xf0) {
2609 term->utf_size = term->utf_state = 3;
2610 term->utf_char = (c & 0x07);
2611 } else if ((c & 0xfc) == 0xf8) {
2612 term->utf_size = term->utf_state = 4;
2613 term->utf_char = (c & 0x03);
2614 } else if ((c & 0xfe) == 0xfc) {
2615 term->utf_size = term->utf_state = 5;
2616 term->utf_char = (c & 0x01);
2627 if ((c & 0xC0) != 0x80) {
2630 term->utf_state = 0;
2633 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
2634 if (--term->utf_state)
2639 /* Is somebody trying to be evil! */
2641 (c < 0x800 && term->utf_size >= 2) ||
2642 (c < 0x10000 && term->utf_size >= 3) ||
2643 (c < 0x200000 && term->utf_size >= 4) ||
2644 (c < 0x4000000 && term->utf_size >= 5))
2647 /* Unicode line separator and paragraph separator are CR-LF */
2648 if (c == 0x2028 || c == 0x2029)
2651 /* High controls are probably a Baaad idea too. */
2655 /* The UTF-16 surrogates are not nice either. */
2656 /* The standard give the option of decoding these:
2657 * I don't want to! */
2658 if (c >= 0xD800 && c < 0xE000)
2661 /* ISO 10646 characters now limited to UTF-16 range. */
2665 /* This is currently a TagPhobic application.. */
2666 if (c >= 0xE0000 && c <= 0xE007F)
2669 /* U+FEFF is best seen as a null. */
2672 /* But U+FFFE is an error. */
2673 if (c == 0xFFFE || c == 0xFFFF)
2678 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2679 else if(term->sco_acs &&
2680 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
2682 if (term->sco_acs == 2) c |= 0x80;
2685 switch (term->cset_attr[term->cset]) {
2687 * Linedraw characters are different from 'ESC ( B'
2688 * only for a small range. For ones outside that
2689 * range, make sure we use the same font as well as
2690 * the same encoding.
2693 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2694 c = term->ucsdata->unitab_ctrl[c];
2696 c = ((unsigned char) c) | CSET_LINEDRW;
2700 /* If UK-ASCII, make the '#' a LineDraw Pound */
2702 c = '}' | CSET_LINEDRW;
2705 /*FALLTHROUGH*/ case CSET_ASCII:
2706 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2707 c = term->ucsdata->unitab_ctrl[c];
2709 c = ((unsigned char) c) | CSET_ASCII;
2712 if (c>=' ') c = ((unsigned char)c) | CSET_SCOACS;
2719 * How about C1 controls?
2720 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2722 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
2723 !term->vt52_mode && has_compat(VT220)) {
2727 term->termstate = SEEN_ESC;
2728 term->esc_query = FALSE;
2729 c = '@' + (c & 0x1F);
2733 /* Or the GL control. */
2734 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
2735 if (term->curs.x && !term->wrapnext)
2737 term->wrapnext = FALSE;
2738 /* destructive backspace might be disabled */
2739 if (!term->cfg.no_dbackspace) {
2740 check_boundary(term, term->curs.x, term->curs.y);
2741 check_boundary(term, term->curs.x+1, term->curs.y);
2742 copy_termchar(scrlineptr(term->curs.y),
2743 term->curs.x, &term->erase_char);
2746 /* Or normal C0 controls. */
2747 if ((c & ~0x1F) == 0 && term->termstate < DO_CTRLS) {
2749 case '\005': /* ENQ: terminal type query */
2751 * Strictly speaking this is VT100 but a VT100 defaults to
2752 * no response. Other terminals respond at their option.
2754 * Don't put a CR in the default string as this tends to
2755 * upset some weird software.
2757 compatibility(ANSIMIN);
2759 char abuf[lenof(term->cfg.answerback)], *s, *d;
2760 for (s = term->cfg.answerback, d = abuf; *s;) {
2762 char c = ctrlparse(s, &n);
2770 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
2774 case '\007': /* BEL: Bell */
2776 struct beeptime *newbeep;
2777 unsigned long ticks;
2779 ticks = GETTICKCOUNT();
2781 if (!term->beep_overloaded) {
2782 newbeep = snew(struct beeptime);
2783 newbeep->ticks = ticks;
2784 newbeep->next = NULL;
2785 if (!term->beephead)
2786 term->beephead = newbeep;
2788 term->beeptail->next = newbeep;
2789 term->beeptail = newbeep;
2794 * Throw out any beeps that happened more than
2797 while (term->beephead &&
2798 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
2799 struct beeptime *tmp = term->beephead;
2800 term->beephead = tmp->next;
2802 if (!term->beephead)
2803 term->beeptail = NULL;
2807 if (term->cfg.bellovl && term->beep_overloaded &&
2808 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
2810 * If we're currently overloaded and the
2811 * last beep was more than s seconds ago,
2812 * leave overload mode.
2814 term->beep_overloaded = FALSE;
2815 } else if (term->cfg.bellovl && !term->beep_overloaded &&
2816 term->nbeeps >= term->cfg.bellovl_n) {
2818 * Now, if we have n or more beeps
2819 * remaining in the queue, go into overload
2822 term->beep_overloaded = TRUE;
2824 term->lastbeep = ticks;
2827 * Perform an actual beep if we're not overloaded.
2829 if (!term->cfg.bellovl || !term->beep_overloaded) {
2830 do_beep(term->frontend, term->cfg.beep);
2832 if (term->cfg.beep == BELL_VISUAL) {
2833 term_schedule_vbell(term, FALSE, 0);
2836 seen_disp_event(term);
2839 case '\b': /* BS: Back space */
2840 if (term->curs.x == 0 &&
2841 (term->curs.y == 0 || term->wrap == 0))
2843 else if (term->curs.x == 0 && term->curs.y > 0)
2844 term->curs.x = term->cols - 1, term->curs.y--;
2845 else if (term->wrapnext)
2846 term->wrapnext = FALSE;
2849 seen_disp_event(term);
2851 case '\016': /* LS1: Locking-shift one */
2852 compatibility(VT100);
2855 case '\017': /* LS0: Locking-shift zero */
2856 compatibility(VT100);
2859 case '\033': /* ESC: Escape */
2860 if (term->vt52_mode)
2861 term->termstate = VT52_ESC;
2863 compatibility(ANSIMIN);
2864 term->termstate = SEEN_ESC;
2865 term->esc_query = FALSE;
2868 case '\015': /* CR: Carriage return */
2870 term->wrapnext = FALSE;
2871 seen_disp_event(term);
2872 term->paste_hold = 0;
2874 if (term->cfg.crhaslf) {
2875 if (term->curs.y == term->marg_b)
2876 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2877 else if (term->curs.y < term->rows - 1)
2881 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2883 case '\014': /* FF: Form feed */
2884 if (has_compat(SCOANSI)) {
2885 move(term, 0, 0, 0);
2886 erase_lots(term, FALSE, FALSE, TRUE);
2888 term->wrapnext = FALSE;
2889 seen_disp_event(term);
2892 case '\013': /* VT: Line tabulation */
2893 compatibility(VT100);
2894 case '\012': /* LF: Line feed */
2895 if (term->curs.y == term->marg_b)
2896 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2897 else if (term->curs.y < term->rows - 1)
2899 if (term->cfg.lfhascr)
2901 term->wrapnext = FALSE;
2902 seen_disp_event(term);
2903 term->paste_hold = 0;
2905 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2907 case '\t': /* HT: Character tabulation */
2909 pos old_curs = term->curs;
2910 termline *ldata = scrlineptr(term->curs.y);
2914 } while (term->curs.x < term->cols - 1 &&
2915 !term->tabs[term->curs.x]);
2917 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) {
2918 if (term->curs.x >= term->cols / 2)
2919 term->curs.x = term->cols / 2 - 1;
2921 if (term->curs.x >= term->cols)
2922 term->curs.x = term->cols - 1;
2925 check_selection(term, old_curs, term->curs);
2927 seen_disp_event(term);
2931 switch (term->termstate) {
2933 /* Only graphic characters get this far;
2934 * ctrls are stripped above */
2936 termline *cline = scrlineptr(term->curs.y);
2941 width = (term->cfg.cjk_ambig_wide ?
2942 mk_wcwidth_cjk((wchar_t) c) :
2943 mk_wcwidth((wchar_t) c));
2945 if (term->wrapnext && term->wrap && width > 0) {
2946 cline->lattr |= LATTR_WRAPPED;
2947 if (term->curs.y == term->marg_b)
2948 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2949 else if (term->curs.y < term->rows - 1)
2952 term->wrapnext = FALSE;
2953 cline = scrlineptr(term->curs.y);
2955 if (term->insert && width > 0)
2957 if (term->selstate != NO_SELECTION) {
2958 pos cursplus = term->curs;
2960 check_selection(term, term->curs, cursplus);
2962 if (((c & CSET_MASK) == CSET_ASCII ||
2963 (c & CSET_MASK) == 0) &&
2965 logtraffic(term->logctx, (unsigned char) c,
2971 * If we're about to display a double-width
2972 * character starting in the rightmost
2973 * column, then we do something special
2974 * instead. We must print a space in the
2975 * last column of the screen, then wrap;
2976 * and we also set LATTR_WRAPPED2 which
2977 * instructs subsequent cut-and-pasting not
2978 * only to splice this line to the one
2979 * after it, but to ignore the space in the
2980 * last character position as well.
2981 * (Because what was actually output to the
2982 * terminal was presumably just a sequence
2983 * of CJK characters, and we don't want a
2984 * space to be pasted in the middle of
2985 * those just because they had the
2986 * misfortune to start in the wrong parity
2987 * column. xterm concurs.)
2989 check_boundary(term, term->curs.x, term->curs.y);
2990 check_boundary(term, term->curs.x+2, term->curs.y);
2991 if (term->curs.x == term->cols-1) {
2992 copy_termchar(cline, term->curs.x,
2994 cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2;
2995 if (term->curs.y == term->marg_b)
2996 scroll(term, term->marg_t, term->marg_b,
2998 else if (term->curs.y < term->rows - 1)
3001 cline = scrlineptr(term->curs.y);
3002 /* Now we must check_boundary again, of course. */
3003 check_boundary(term, term->curs.x, term->curs.y);
3004 check_boundary(term, term->curs.x+2, term->curs.y);
3008 clear_cc(cline, term->curs.x);
3009 cline->chars[term->curs.x].chr = c;
3010 cline->chars[term->curs.x].attr = term->curr_attr;
3015 clear_cc(cline, term->curs.x);
3016 cline->chars[term->curs.x].chr = UCSWIDE;
3017 cline->chars[term->curs.x].attr = term->curr_attr;
3021 check_boundary(term, term->curs.x, term->curs.y);
3022 check_boundary(term, term->curs.x+1, term->curs.y);
3025 clear_cc(cline, term->curs.x);
3026 cline->chars[term->curs.x].chr = c;
3027 cline->chars[term->curs.x].attr = term->curr_attr;
3031 if (term->curs.x > 0) {
3032 int x = term->curs.x - 1;
3034 /* If we're in wrapnext state, the character
3035 * to combine with is _here_, not to our left. */
3040 * If the previous character is
3041 * UCSWIDE, back up another one.
3043 if (cline->chars[x].chr == UCSWIDE) {
3048 add_cc(cline, x, c);
3049 seen_disp_event(term);
3056 if (term->curs.x == term->cols) {
3058 term->wrapnext = TRUE;
3059 if (term->wrap && term->vt52_mode) {
3060 cline->lattr |= LATTR_WRAPPED;
3061 if (term->curs.y == term->marg_b)
3062 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3063 else if (term->curs.y < term->rows - 1)
3066 term->wrapnext = FALSE;
3069 seen_disp_event(term);
3075 * This state is virtually identical to SEEN_ESC, with the
3076 * exception that we have an OSC sequence in the pipeline,
3077 * and _if_ we see a backslash, we process it.
3081 term->termstate = TOPLEVEL;
3084 /* else fall through */
3086 if (c >= ' ' && c <= '/') {
3087 if (term->esc_query)
3088 term->esc_query = -1;
3090 term->esc_query = c;
3093 term->termstate = TOPLEVEL;
3094 switch (ANSI(c, term->esc_query)) {
3095 case '[': /* enter CSI mode */
3096 term->termstate = SEEN_CSI;
3097 term->esc_nargs = 1;
3098 term->esc_args[0] = ARG_DEFAULT;
3099 term->esc_query = FALSE;
3101 case ']': /* OSC: xterm escape sequences */
3102 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3103 compatibility(OTHER);
3104 term->termstate = SEEN_OSC;
3105 term->esc_args[0] = 0;
3107 case '7': /* DECSC: save cursor */
3108 compatibility(VT100);
3109 save_cursor(term, TRUE);
3111 case '8': /* DECRC: restore cursor */
3112 compatibility(VT100);
3113 save_cursor(term, FALSE);
3114 seen_disp_event(term);
3116 case '=': /* DECKPAM: Keypad application mode */
3117 compatibility(VT100);
3118 term->app_keypad_keys = TRUE;
3120 case '>': /* DECKPNM: Keypad numeric mode */
3121 compatibility(VT100);
3122 term->app_keypad_keys = FALSE;
3124 case 'D': /* IND: exactly equivalent to LF */
3125 compatibility(VT100);
3126 if (term->curs.y == term->marg_b)
3127 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3128 else if (term->curs.y < term->rows - 1)
3130 term->wrapnext = FALSE;
3131 seen_disp_event(term);
3133 case 'E': /* NEL: exactly equivalent to CR-LF */
3134 compatibility(VT100);
3136 if (term->curs.y == term->marg_b)
3137 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3138 else if (term->curs.y < term->rows - 1)
3140 term->wrapnext = FALSE;
3141 seen_disp_event(term);
3143 case 'M': /* RI: reverse index - backwards LF */
3144 compatibility(VT100);
3145 if (term->curs.y == term->marg_t)
3146 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
3147 else if (term->curs.y > 0)
3149 term->wrapnext = FALSE;
3150 seen_disp_event(term);
3152 case 'Z': /* DECID: terminal type query */
3153 compatibility(VT100);
3155 ldisc_send(term->ldisc, term->id_string,
3156 strlen(term->id_string), 0);
3158 case 'c': /* RIS: restore power-on settings */
3159 compatibility(VT100);
3160 power_on(term, TRUE);
3161 if (term->ldisc) /* cause ldisc to notice changes */
3162 ldisc_send(term->ldisc, NULL, 0, 0);
3163 if (term->reset_132) {
3164 if (!term->cfg.no_remote_resize)
3165 request_resize(term->frontend, 80, term->rows);
3166 term->reset_132 = 0;
3169 seen_disp_event(term);
3171 case 'H': /* HTS: set a tab */
3172 compatibility(VT100);
3173 term->tabs[term->curs.x] = TRUE;
3176 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3177 compatibility(VT100);
3183 for (i = 0; i < term->rows; i++) {
3184 ldata = scrlineptr(i);
3185 for (j = 0; j < term->cols; j++) {
3186 copy_termchar(ldata, j,
3187 &term->basic_erase_char);
3188 ldata->chars[j].chr = 'E';
3190 ldata->lattr = LATTR_NORM;
3193 seen_disp_event(term);
3194 scrtop.x = scrtop.y = 0;
3196 scrbot.y = term->rows;
3197 check_selection(term, scrtop, scrbot);
3201 case ANSI('3', '#'):
3202 case ANSI('4', '#'):
3203 case ANSI('5', '#'):
3204 case ANSI('6', '#'):
3205 compatibility(VT100);
3209 switch (ANSI(c, term->esc_query)) {
3210 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3213 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3216 case ANSI('5', '#'): /* DECSWL: normal */
3217 nlattr = LATTR_NORM;
3219 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3220 nlattr = LATTR_WIDE;
3223 scrlineptr(term->curs.y)->lattr = nlattr;
3226 /* GZD4: G0 designate 94-set */
3227 case ANSI('A', '('):
3228 compatibility(VT100);
3229 if (!term->cfg.no_remote_charset)
3230 term->cset_attr[0] = CSET_GBCHR;
3232 case ANSI('B', '('):
3233 compatibility(VT100);
3234 if (!term->cfg.no_remote_charset)
3235 term->cset_attr[0] = CSET_ASCII;
3237 case ANSI('0', '('):
3238 compatibility(VT100);
3239 if (!term->cfg.no_remote_charset)
3240 term->cset_attr[0] = CSET_LINEDRW;
3242 case ANSI('U', '('):
3243 compatibility(OTHER);
3244 if (!term->cfg.no_remote_charset)
3245 term->cset_attr[0] = CSET_SCOACS;
3247 /* G1D4: G1-designate 94-set */
3248 case ANSI('A', ')'):
3249 compatibility(VT100);
3250 if (!term->cfg.no_remote_charset)
3251 term->cset_attr[1] = CSET_GBCHR;
3253 case ANSI('B', ')'):
3254 compatibility(VT100);
3255 if (!term->cfg.no_remote_charset)
3256 term->cset_attr[1] = CSET_ASCII;
3258 case ANSI('0', ')'):
3259 compatibility(VT100);
3260 if (!term->cfg.no_remote_charset)
3261 term->cset_attr[1] = CSET_LINEDRW;
3263 case ANSI('U', ')'):
3264 compatibility(OTHER);
3265 if (!term->cfg.no_remote_charset)
3266 term->cset_attr[1] = CSET_SCOACS;
3268 /* DOCS: Designate other coding system */
3269 case ANSI('8', '%'): /* Old Linux code */
3270 case ANSI('G', '%'):
3271 compatibility(OTHER);
3272 if (!term->cfg.no_remote_charset)
3275 case ANSI('@', '%'):
3276 compatibility(OTHER);
3277 if (!term->cfg.no_remote_charset)
3283 term->termstate = TOPLEVEL; /* default */
3285 if (term->esc_nargs <= ARGS_MAX) {
3286 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
3287 term->esc_args[term->esc_nargs - 1] = 0;
3288 term->esc_args[term->esc_nargs - 1] =
3289 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
3291 term->termstate = SEEN_CSI;
3292 } else if (c == ';') {
3293 if (term->esc_nargs < ARGS_MAX)
3294 term->esc_args[term->esc_nargs++] = ARG_DEFAULT;
3295 term->termstate = SEEN_CSI;
3296 } else if (c < '@') {
3297 if (term->esc_query)
3298 term->esc_query = -1;
3300 term->esc_query = TRUE;
3302 term->esc_query = c;
3303 term->termstate = SEEN_CSI;
3305 switch (ANSI(c, term->esc_query)) {
3306 case 'A': /* CUU: move up N lines */
3307 move(term, term->curs.x,
3308 term->curs.y - def(term->esc_args[0], 1), 1);
3309 seen_disp_event(term);
3311 case 'e': /* VPR: move down N lines */
3312 compatibility(ANSI);
3314 case 'B': /* CUD: Cursor down */
3315 move(term, term->curs.x,
3316 term->curs.y + def(term->esc_args[0], 1), 1);
3317 seen_disp_event(term);
3319 case ANSI('c', '>'): /* DA: report xterm version */
3320 compatibility(OTHER);
3321 /* this reports xterm version 136 so that VIM can
3322 use the drag messages from the mouse reporting */
3324 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
3326 case 'a': /* HPR: move right N cols */
3327 compatibility(ANSI);
3329 case 'C': /* CUF: Cursor right */
3330 move(term, term->curs.x + def(term->esc_args[0], 1),
3332 seen_disp_event(term);
3334 case 'D': /* CUB: move left N cols */
3335 move(term, term->curs.x - def(term->esc_args[0], 1),
3337 seen_disp_event(term);
3339 case 'E': /* CNL: move down N lines and CR */
3340 compatibility(ANSI);
3342 term->curs.y + def(term->esc_args[0], 1), 1);
3343 seen_disp_event(term);
3345 case 'F': /* CPL: move up N lines and CR */
3346 compatibility(ANSI);
3348 term->curs.y - def(term->esc_args[0], 1), 1);
3349 seen_disp_event(term);
3352 case '`': /* HPA: set horizontal posn */
3353 compatibility(ANSI);
3354 move(term, def(term->esc_args[0], 1) - 1,
3356 seen_disp_event(term);
3358 case 'd': /* VPA: set vertical posn */
3359 compatibility(ANSI);
3360 move(term, term->curs.x,
3361 ((term->dec_om ? term->marg_t : 0) +
3362 def(term->esc_args[0], 1) - 1),
3363 (term->dec_om ? 2 : 0));
3364 seen_disp_event(term);
3367 case 'f': /* HVP: set horz and vert posns at once */
3368 if (term->esc_nargs < 2)
3369 term->esc_args[1] = ARG_DEFAULT;
3370 move(term, def(term->esc_args[1], 1) - 1,
3371 ((term->dec_om ? term->marg_t : 0) +
3372 def(term->esc_args[0], 1) - 1),
3373 (term->dec_om ? 2 : 0));
3374 seen_disp_event(term);
3376 case 'J': /* ED: erase screen or parts of it */
3378 unsigned int i = def(term->esc_args[0], 0);
3380 /* Erase Saved Lines (xterm)
3381 * This follows Thomas Dickey's xterm. */
3387 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
3391 seen_disp_event(term);
3393 case 'K': /* EL: erase line or parts of it */
3395 unsigned int i = def(term->esc_args[0], 0) + 1;
3398 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
3400 seen_disp_event(term);
3402 case 'L': /* IL: insert lines */
3403 compatibility(VT102);
3404 if (term->curs.y <= term->marg_b)
3405 scroll(term, term->curs.y, term->marg_b,
3406 -def(term->esc_args[0], 1), FALSE);
3407 seen_disp_event(term);
3409 case 'M': /* DL: delete lines */
3410 compatibility(VT102);
3411 if (term->curs.y <= term->marg_b)
3412 scroll(term, term->curs.y, term->marg_b,
3413 def(term->esc_args[0], 1),
3415 seen_disp_event(term);
3417 case '@': /* ICH: insert chars */
3418 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3419 compatibility(VT102);
3420 insch(term, def(term->esc_args[0], 1));
3421 seen_disp_event(term);
3423 case 'P': /* DCH: delete chars */
3424 compatibility(VT102);
3425 insch(term, -def(term->esc_args[0], 1));
3426 seen_disp_event(term);
3428 case 'c': /* DA: terminal type query */
3429 compatibility(VT100);
3430 /* This is the response for a VT102 */
3432 ldisc_send(term->ldisc, term->id_string,
3433 strlen(term->id_string), 0);
3435 case 'n': /* DSR: cursor position query */
3437 if (term->esc_args[0] == 6) {
3439 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
3441 ldisc_send(term->ldisc, buf, strlen(buf), 0);
3442 } else if (term->esc_args[0] == 5) {
3443 ldisc_send(term->ldisc, "\033[0n", 4, 0);
3447 case 'h': /* SM: toggle modes to high */
3449 compatibility(VT100);
3452 for (i = 0; i < term->esc_nargs; i++)
3453 toggle_mode(term, term->esc_args[i],
3454 term->esc_query, TRUE);
3457 case 'i': /* MC: Media copy */
3459 compatibility(VT100);
3461 if (term->esc_nargs != 1) break;
3462 if (term->esc_args[0] == 5 && *term->cfg.printer) {
3463 term->printing = TRUE;
3464 term->only_printing = !term->esc_query;
3465 term->print_state = 0;
3466 term_print_setup(term);
3467 } else if (term->esc_args[0] == 4 &&
3469 term_print_finish(term);
3473 case 'l': /* RM: toggle modes to low */
3475 compatibility(VT100);
3478 for (i = 0; i < term->esc_nargs; i++)
3479 toggle_mode(term, term->esc_args[i],
3480 term->esc_query, FALSE);
3483 case 'g': /* TBC: clear tabs */
3484 compatibility(VT100);
3485 if (term->esc_nargs == 1) {
3486 if (term->esc_args[0] == 0) {
3487 term->tabs[term->curs.x] = FALSE;
3488 } else if (term->esc_args[0] == 3) {
3490 for (i = 0; i < term->cols; i++)
3491 term->tabs[i] = FALSE;
3495 case 'r': /* DECSTBM: set scroll margins */
3496 compatibility(VT100);
3497 if (term->esc_nargs <= 2) {
3499 top = def(term->esc_args[0], 1) - 1;
3500 bot = (term->esc_nargs <= 1
3501 || term->esc_args[1] == 0 ?
3503 def(term->esc_args[1], term->rows)) - 1;
3504 if (bot >= term->rows)
3505 bot = term->rows - 1;
3506 /* VTTEST Bug 9 - if region is less than 2 lines
3507 * don't change region.
3509 if (bot - top > 0) {
3514 * I used to think the cursor should be
3515 * placed at the top of the newly marginned
3516 * area. Apparently not: VMS TPU falls over
3519 * Well actually it should for
3522 term->curs.y = (term->dec_om ?
3524 seen_disp_event(term);
3528 case 'm': /* SGR: set graphics rendition */
3531 * A VT100 without the AVO only had one
3532 * attribute, either underline or
3533 * reverse video depending on the
3534 * cursor type, this was selected by
3538 * This is sometimes DIM, eg on the
3541 * This is sometimes INVIS various ANSI.
3543 * This like 22 disables BOLD, DIM and INVIS
3545 * The ANSI colours appear on any
3546 * terminal that has colour (obviously)
3547 * but the interaction between sgr0 and
3548 * the colours varies but is usually
3549 * related to the background colour
3550 * erase item. The interaction between
3551 * colour attributes and the mono ones
3552 * is also very implementation
3555 * The 39 and 49 attributes are likely
3556 * to be unimplemented.
3559 for (i = 0; i < term->esc_nargs; i++) {
3560 switch (def(term->esc_args[i], 0)) {
3561 case 0: /* restore defaults */
3562 term->curr_attr = term->default_attr;
3564 case 1: /* enable bold */
3565 compatibility(VT100AVO);
3566 term->curr_attr |= ATTR_BOLD;
3568 case 21: /* (enable double underline) */
3569 compatibility(OTHER);
3570 case 4: /* enable underline */
3571 compatibility(VT100AVO);
3572 term->curr_attr |= ATTR_UNDER;
3574 case 5: /* enable blink */
3575 compatibility(VT100AVO);
3576 term->curr_attr |= ATTR_BLINK;
3578 case 6: /* SCO light bkgrd */
3579 compatibility(SCOANSI);
3580 term->blink_is_real = FALSE;
3581 term->curr_attr |= ATTR_BLINK;
3582 term_schedule_tblink(term);
3584 case 7: /* enable reverse video */
3585 term->curr_attr |= ATTR_REVERSE;
3587 case 10: /* SCO acs off */
3588 compatibility(SCOANSI);
3589 if (term->cfg.no_remote_charset) break;
3590 term->sco_acs = 0; break;
3591 case 11: /* SCO acs on */
3592 compatibility(SCOANSI);
3593 if (term->cfg.no_remote_charset) break;
3594 term->sco_acs = 1; break;
3595 case 12: /* SCO acs on, |0x80 */
3596 compatibility(SCOANSI);
3597 if (term->cfg.no_remote_charset) break;
3598 term->sco_acs = 2; break;
3599 case 22: /* disable bold */
3600 compatibility2(OTHER, VT220);
3601 term->curr_attr &= ~ATTR_BOLD;
3603 case 24: /* disable underline */
3604 compatibility2(OTHER, VT220);
3605 term->curr_attr &= ~ATTR_UNDER;
3607 case 25: /* disable blink */
3608 compatibility2(OTHER, VT220);
3609 term->curr_attr &= ~ATTR_BLINK;
3611 case 27: /* disable reverse video */
3612 compatibility2(OTHER, VT220);
3613 term->curr_attr &= ~ATTR_REVERSE;
3624 term->curr_attr &= ~ATTR_FGMASK;
3626 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
3636 /* aixterm-style bright foreground */
3637 term->curr_attr &= ~ATTR_FGMASK;
3639 ((term->esc_args[i] - 90 + 8)
3642 case 39: /* default-foreground */
3643 term->curr_attr &= ~ATTR_FGMASK;
3644 term->curr_attr |= ATTR_DEFFG;
3655 term->curr_attr &= ~ATTR_BGMASK;
3657 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
3667 /* aixterm-style bright background */
3668 term->curr_attr &= ~ATTR_BGMASK;
3670 ((term->esc_args[i] - 100 + 8)
3673 case 49: /* default-background */
3674 term->curr_attr &= ~ATTR_BGMASK;
3675 term->curr_attr |= ATTR_DEFBG;
3677 case 38: /* xterm 256-colour mode */
3678 if (i+2 < term->esc_nargs &&
3679 term->esc_args[i+1] == 5) {
3680 term->curr_attr &= ~ATTR_FGMASK;
3682 ((term->esc_args[i+2] & 0xFF)
3687 case 48: /* xterm 256-colour mode */
3688 if (i+2 < term->esc_nargs &&
3689 term->esc_args[i+1] == 5) {
3690 term->curr_attr &= ~ATTR_BGMASK;
3692 ((term->esc_args[i+2] & 0xFF)
3699 set_erase_char(term);
3702 case 's': /* save cursor */
3703 save_cursor(term, TRUE);
3705 case 'u': /* restore cursor */
3706 save_cursor(term, FALSE);
3707 seen_disp_event(term);
3709 case 't': /* DECSLPP: set page size - ie window height */
3711 * VT340/VT420 sequence DECSLPP, DEC only allows values
3712 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3713 * illegal values (eg first arg 1..9) for window changing
3716 if (term->esc_nargs <= 1
3717 && (term->esc_args[0] < 1 ||
3718 term->esc_args[0] >= 24)) {
3719 compatibility(VT340TEXT);
3720 if (!term->cfg.no_remote_resize)
3721 request_resize(term->frontend, term->cols,
3722 def(term->esc_args[0], 24));
3724 } else if (term->esc_nargs >= 1 &&
3725 term->esc_args[0] >= 1 &&
3726 term->esc_args[0] < 24) {
3727 compatibility(OTHER);
3729 switch (term->esc_args[0]) {
3733 set_iconic(term->frontend, FALSE);
3736 set_iconic(term->frontend, TRUE);
3739 if (term->esc_nargs >= 3) {
3740 if (!term->cfg.no_remote_resize)
3741 move_window(term->frontend,
3742 def(term->esc_args[1], 0),
3743 def(term->esc_args[2], 0));
3747 /* We should resize the window to a given
3748 * size in pixels here, but currently our
3749 * resizing code isn't healthy enough to
3754 set_zorder(term->frontend, TRUE);
3757 /* move to bottom */
3758 set_zorder(term->frontend, FALSE);
3761 refresh_window(term->frontend);
3764 if (term->esc_nargs >= 3) {
3765 if (!term->cfg.no_remote_resize)
3766 request_resize(term->frontend,
3767 def(term->esc_args[2], term->cfg.width),
3768 def(term->esc_args[1], term->cfg.height));
3772 if (term->esc_nargs >= 2)
3773 set_zoomed(term->frontend,
3779 ldisc_send(term->ldisc,
3780 is_iconic(term->frontend) ?
3781 "\033[2t" : "\033[1t", 4, 0);
3785 get_window_pos(term->frontend, &x, &y);
3786 len = sprintf(buf, "\033[3;%d;%dt", x, y);
3787 ldisc_send(term->ldisc, buf, len, 0);
3792 get_window_pixels(term->frontend, &x, &y);
3793 len = sprintf(buf, "\033[4;%d;%dt", y, x);
3794 ldisc_send(term->ldisc, buf, len, 0);
3799 len = sprintf(buf, "\033[8;%d;%dt",
3800 term->rows, term->cols);
3801 ldisc_send(term->ldisc, buf, len, 0);
3806 * Hmmm. Strictly speaking we
3807 * should return `the size of the
3808 * screen in characters', but
3809 * that's not easy: (a) window
3810 * furniture being what it is it's
3811 * hard to compute, and (b) in
3812 * resize-font mode maximising the
3813 * window wouldn't change the
3814 * number of characters. *shrug*. I
3815 * think we'll ignore it for the
3816 * moment and see if anyone
3817 * complains, and then ask them
3818 * what they would like it to do.
3823 term->cfg.remote_qtitle_action != TITLE_NONE) {
3824 if(term->cfg.remote_qtitle_action == TITLE_REAL)
3825 p = get_window_title(term->frontend, TRUE);
3827 p = EMPTY_WINDOW_TITLE;
3829 ldisc_send(term->ldisc, "\033]L", 3, 0);
3830 ldisc_send(term->ldisc, p, len, 0);
3831 ldisc_send(term->ldisc, "\033\\", 2, 0);
3836 term->cfg.remote_qtitle_action != TITLE_NONE) {
3837 if(term->cfg.remote_qtitle_action == TITLE_REAL)
3838 p = get_window_title(term->frontend, FALSE);
3840 p = EMPTY_WINDOW_TITLE;
3842 ldisc_send(term->ldisc, "\033]l", 3, 0);
3843 ldisc_send(term->ldisc, p, len, 0);
3844 ldisc_send(term->ldisc, "\033\\", 2, 0);
3850 case 'S': /* SU: Scroll up */
3851 compatibility(SCOANSI);
3852 scroll(term, term->marg_t, term->marg_b,
3853 def(term->esc_args[0], 1), TRUE);
3854 term->wrapnext = FALSE;
3855 seen_disp_event(term);
3857 case 'T': /* SD: Scroll down */
3858 compatibility(SCOANSI);
3859 scroll(term, term->marg_t, term->marg_b,
3860 -def(term->esc_args[0], 1), TRUE);
3861 term->wrapnext = FALSE;
3862 seen_disp_event(term);
3864 case ANSI('|', '*'): /* DECSNLS */
3866 * Set number of lines on screen
3867 * VT420 uses VGA like hardware and can
3868 * support any size in reasonable range
3869 * (24..49 AIUI) with no default specified.
3871 compatibility(VT420);
3872 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
3873 if (!term->cfg.no_remote_resize)
3874 request_resize(term->frontend, term->cols,
3875 def(term->esc_args[0],
3880 case ANSI('|', '$'): /* DECSCPP */
3882 * Set number of columns per page
3883 * Docs imply range is only 80 or 132, but
3886 compatibility(VT340TEXT);
3887 if (term->esc_nargs <= 1) {
3888 if (!term->cfg.no_remote_resize)
3889 request_resize(term->frontend,
3890 def(term->esc_args[0],
3891 term->cfg.width), term->rows);
3895 case 'X': /* ECH: write N spaces w/o moving cursor */
3896 /* XXX VTTEST says this is vt220, vt510 manual
3898 compatibility(ANSIMIN);
3900 int n = def(term->esc_args[0], 1);
3902 int p = term->curs.x;
3903 termline *cline = scrlineptr(term->curs.y);
3905 if (n > term->cols - term->curs.x)
3906 n = term->cols - term->curs.x;
3907 cursplus = term->curs;
3909 check_boundary(term, term->curs.x, term->curs.y);
3910 check_boundary(term, term->curs.x+n, term->curs.y);
3911 check_selection(term, term->curs, cursplus);
3913 copy_termchar(cline, p++,
3915 seen_disp_event(term);
3918 case 'x': /* DECREQTPARM: report terminal characteristics */
3919 compatibility(VT100);
3922 int i = def(term->esc_args[0], 0);
3923 if (i == 0 || i == 1) {
3924 strcpy(buf, "\033[2;1;1;112;112;1;0x");
3926 ldisc_send(term->ldisc, buf, 20, 0);
3931 compatibility(OTHER);
3933 int i = def(term->esc_args[0], 1);
3934 pos old_curs = term->curs;
3936 for(;i>0 && term->curs.x>0; i--) {
3939 } while (term->curs.x >0 &&
3940 !term->tabs[term->curs.x]);
3942 check_selection(term, old_curs, term->curs);
3945 case ANSI('c', '='): /* Hide or Show Cursor */
3946 compatibility(SCOANSI);
3947 switch(term->esc_args[0]) {
3948 case 0: /* hide cursor */
3949 term->cursor_on = FALSE;
3951 case 1: /* restore cursor */
3952 term->big_cursor = FALSE;
3953 term->cursor_on = TRUE;
3955 case 2: /* block cursor */
3956 term->big_cursor = TRUE;
3957 term->cursor_on = TRUE;
3961 case ANSI('C', '='):
3963 * set cursor start on scanline esc_args[0] and
3964 * end on scanline esc_args[1].If you set
3965 * the bottom scan line to a value less than
3966 * the top scan line, the cursor will disappear.
3968 compatibility(SCOANSI);
3969 if (term->esc_nargs >= 2) {
3970 if (term->esc_args[0] > term->esc_args[1])
3971 term->cursor_on = FALSE;
3973 term->cursor_on = TRUE;
3976 case ANSI('D', '='):
3977 compatibility(SCOANSI);
3978 term->blink_is_real = FALSE;
3979 term_schedule_tblink(term);
3980 if (term->esc_args[0]>=1)
3981 term->curr_attr |= ATTR_BLINK;
3983 term->curr_attr &= ~ATTR_BLINK;
3985 case ANSI('E', '='):
3986 compatibility(SCOANSI);
3987 term->blink_is_real = (term->esc_args[0] >= 1);
3988 term_schedule_tblink(term);
3990 case ANSI('F', '='): /* set normal foreground */
3991 compatibility(SCOANSI);
3992 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3994 (sco2ansicolour[term->esc_args[0] & 0x7] |
3995 (term->esc_args[0] & 0x8)) <<
3997 term->curr_attr &= ~ATTR_FGMASK;
3998 term->curr_attr |= colour;
3999 term->default_attr &= ~ATTR_FGMASK;
4000 term->default_attr |= colour;
4001 set_erase_char(term);
4004 case ANSI('G', '='): /* set normal background */
4005 compatibility(SCOANSI);
4006 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
4008 (sco2ansicolour[term->esc_args[0] & 0x7] |
4009 (term->esc_args[0] & 0x8)) <<
4011 term->curr_attr &= ~ATTR_BGMASK;
4012 term->curr_attr |= colour;
4013 term->default_attr &= ~ATTR_BGMASK;
4014 term->default_attr |= colour;
4015 set_erase_char(term);
4018 case ANSI('L', '='):
4019 compatibility(SCOANSI);
4020 term->use_bce = (term->esc_args[0] <= 0);
4021 set_erase_char(term);
4023 case ANSI('p', '"'): /* DECSCL: set compat level */
4025 * Allow the host to make this emulator a
4026 * 'perfect' VT102. This first appeared in
4027 * the VT220, but we do need to get back to
4028 * PuTTY mode so I won't check it.
4030 * The arg in 40..42,50 are a PuTTY extension.
4031 * The 2nd arg, 8bit vs 7bit is not checked.
4033 * Setting VT102 mode should also change
4034 * the Fkeys to generate PF* codes as a
4035 * real VT102 has no Fkeys. The VT220 does
4036 * this, F11..F13 become ESC,BS,LF other
4037 * Fkeys send nothing.
4039 * Note ESC c will NOT change this!
4042 switch (term->esc_args[0]) {
4044 term->compatibility_level &= ~TM_VTXXX;
4045 term->compatibility_level |= TM_VT102;
4048 term->compatibility_level &= ~TM_VTXXX;
4049 term->compatibility_level |= TM_VT220;
4053 if (term->esc_args[0] > 60 &&
4054 term->esc_args[0] < 70)
4055 term->compatibility_level |= TM_VTXXX;
4059 term->compatibility_level &= TM_VTXXX;
4062 term->compatibility_level = TM_PUTTY;
4065 term->compatibility_level = TM_SCOANSI;
4069 term->compatibility_level = TM_PUTTY;
4075 /* Change the response to CSI c */
4076 if (term->esc_args[0] == 50) {
4079 strcpy(term->id_string, "\033[?");
4080 for (i = 1; i < term->esc_nargs; i++) {
4082 strcat(term->id_string, ";");
4083 sprintf(lbuf, "%d", term->esc_args[i]);
4084 strcat(term->id_string, lbuf);
4086 strcat(term->id_string, "c");
4089 /* Is this a good idea ?
4090 * Well we should do a soft reset at this point ...
4092 if (!has_compat(VT420) && has_compat(VT100)) {
4093 if (!term->cfg.no_remote_resize) {
4094 if (term->reset_132)
4095 request_resize(132, 24);
4097 request_resize(80, 24);
4105 term->osc_w = FALSE;
4107 case 'P': /* Linux palette sequence */
4108 term->termstate = SEEN_OSC_P;
4109 term->osc_strlen = 0;
4111 case 'R': /* Linux palette reset */
4112 palette_reset(term->frontend);
4113 term_invalidate(term);
4114 term->termstate = TOPLEVEL;
4116 case 'W': /* word-set */
4117 term->termstate = SEEN_OSC_W;
4130 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4134 * Grotty hack to support xterm and DECterm title
4135 * sequences concurrently.
4137 if (term->esc_args[0] == 2) {
4138 term->esc_args[0] = 1;
4141 /* else fall through */
4143 term->termstate = OSC_STRING;
4144 term->osc_strlen = 0;
4149 * This OSC stuff is EVIL. It takes just one character to get into
4150 * sysline mode and it's not initially obvious how to get out.
4151 * So I've added CR and LF as string aborts.
4152 * This shouldn't effect compatibility as I believe embedded
4153 * control characters are supposed to be interpreted (maybe?)
4154 * and they don't display anything useful anyway.
4158 if (c == '\012' || c == '\015') {
4159 term->termstate = TOPLEVEL;
4160 } else if (c == 0234 || c == '\007') {
4162 * These characters terminate the string; ST and BEL
4163 * terminate the sequence and trigger instant
4164 * processing of it, whereas ESC goes back to SEEN_ESC
4165 * mode unless it is followed by \, in which case it is
4166 * synonymous with ST in the first place.
4169 term->termstate = TOPLEVEL;
4170 } else if (c == '\033')
4171 term->termstate = OSC_MAYBE_ST;
4172 else if (term->osc_strlen < OSC_STR_MAX)
4173 term->osc_string[term->osc_strlen++] = (char)c;
4177 int max = (term->osc_strlen == 0 ? 21 : 15);
4179 if ((int)c >= '0' && (int)c <= '9')
4181 else if ((int)c >= 'A' && (int)c <= 'A' + max - 10)
4183 else if ((int)c >= 'a' && (int)c <= 'a' + max - 10)
4186 term->termstate = TOPLEVEL;
4189 term->osc_string[term->osc_strlen++] = val;
4190 if (term->osc_strlen >= 7) {
4191 palette_set(term->frontend, term->osc_string[0],
4192 term->osc_string[1] * 16 + term->osc_string[2],
4193 term->osc_string[3] * 16 + term->osc_string[4],
4194 term->osc_string[5] * 16 + term->osc_string[6]);
4195 term_invalidate(term);
4196 term->termstate = TOPLEVEL;
4212 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4215 term->termstate = OSC_STRING;
4216 term->osc_strlen = 0;
4220 term->termstate = TOPLEVEL;
4221 seen_disp_event(term);
4224 move(term, term->curs.x, term->curs.y - 1, 1);
4227 move(term, term->curs.x, term->curs.y + 1, 1);
4230 move(term, term->curs.x + 1, term->curs.y, 1);
4233 move(term, term->curs.x - 1, term->curs.y, 1);
4236 * From the VT100 Manual
4237 * NOTE: The special graphics characters in the VT100
4238 * are different from those in the VT52
4240 * From VT102 manual:
4241 * 137 _ Blank - Same
4242 * 140 ` Reserved - Humm.
4243 * 141 a Solid rectangle - Similar
4244 * 142 b 1/ - Top half of fraction for the
4245 * 143 c 3/ - subscript numbers below.
4248 * 146 f Degrees - Same
4249 * 147 g Plus or minus - Same
4251 * 151 i Ellipsis (dots)
4254 * 154 l Bar at scan 0
4255 * 155 m Bar at scan 1
4256 * 156 n Bar at scan 2
4257 * 157 o Bar at scan 3 - Similar
4258 * 160 p Bar at scan 4 - Similar
4259 * 161 q Bar at scan 5 - Similar
4260 * 162 r Bar at scan 6 - Same
4261 * 163 s Bar at scan 7 - Similar
4276 term->cset_attr[term->cset = 0] = CSET_LINEDRW;
4279 term->cset_attr[term->cset = 0] = CSET_ASCII;
4282 move(term, 0, 0, 0);
4285 if (term->curs.y == 0)
4286 scroll(term, 0, term->rows - 1, -1, TRUE);
4287 else if (term->curs.y > 0)
4289 term->wrapnext = FALSE;
4292 erase_lots(term, FALSE, FALSE, TRUE);
4296 erase_lots(term, TRUE, FALSE, TRUE);
4300 /* XXX Print cursor line */
4303 /* XXX Start controller mode */
4306 /* XXX Stop controller mode */
4310 term->termstate = VT52_Y1;
4314 ldisc_send(term->ldisc, "\033/Z", 3, 0);
4317 term->app_keypad_keys = TRUE;
4320 term->app_keypad_keys = FALSE;
4323 /* XXX This should switch to VT100 mode not current or default
4324 * VT mode. But this will only have effect in a VT220+
4327 term->vt52_mode = FALSE;
4328 term->blink_is_real = term->cfg.blinktext;
4329 term_schedule_tblink(term);
4333 /* XXX Enter auto print mode */
4336 /* XXX Exit auto print mode */
4339 /* XXX Print screen */
4345 /* compatibility(ATARI) */
4346 move(term, 0, 0, 0);
4347 erase_lots(term, FALSE, FALSE, TRUE);
4351 /* compatibility(ATARI) */
4352 if (term->curs.y <= term->marg_b)
4353 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4356 /* compatibility(ATARI) */
4357 if (term->curs.y <= term->marg_b)
4358 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4361 /* compatibility(ATARI) */
4362 term->termstate = VT52_FG;
4365 /* compatibility(ATARI) */
4366 term->termstate = VT52_BG;
4369 /* compatibility(ATARI) */
4370 erase_lots(term, FALSE, TRUE, FALSE);
4374 /* compatibility(ATARI) */
4375 term->cursor_on = TRUE;
4378 /* compatibility(ATARI) */
4379 term->cursor_on = FALSE;
4381 /* case 'j': Save cursor position - broken on ST */
4382 /* case 'k': Restore cursor position */
4384 /* compatibility(ATARI) */
4385 erase_lots(term, TRUE, TRUE, TRUE);
4387 term->wrapnext = FALSE;
4390 /* compatibility(ATARI) */
4391 erase_lots(term, TRUE, TRUE, FALSE);
4394 /* compatibility(ATARI) */
4395 term->curr_attr |= ATTR_REVERSE;
4398 /* compatibility(ATARI) */
4399 term->curr_attr &= ~ATTR_REVERSE;
4401 case 'v': /* wrap Autowrap on - Wyse style */
4402 /* compatibility(ATARI) */
4405 case 'w': /* Autowrap off */
4406 /* compatibility(ATARI) */
4411 /* compatibility(OTHER) */
4412 term->vt52_bold = FALSE;
4413 term->curr_attr = ATTR_DEFAULT;
4414 set_erase_char(term);
4417 /* compatibility(VI50) */
4418 term->curr_attr |= ATTR_UNDER;
4421 /* compatibility(VI50) */
4422 term->curr_attr &= ~ATTR_UNDER;
4425 /* compatibility(VI50) */
4426 term->vt52_bold = TRUE;
4427 term->curr_attr |= ATTR_BOLD;
4430 /* compatibility(VI50) */
4431 term->vt52_bold = FALSE;
4432 term->curr_attr &= ~ATTR_BOLD;
4438 term->termstate = VT52_Y2;
4439 move(term, term->curs.x, c - ' ', 0);
4442 term->termstate = TOPLEVEL;
4443 move(term, c - ' ', term->curs.y, 0);
4448 term->termstate = TOPLEVEL;
4449 term->curr_attr &= ~ATTR_FGMASK;
4450 term->curr_attr &= ~ATTR_BOLD;
4451 term->curr_attr |= (c & 0xF) << ATTR_FGSHIFT;
4452 set_erase_char(term);
4455 term->termstate = TOPLEVEL;
4456 term->curr_attr &= ~ATTR_BGMASK;
4457 term->curr_attr &= ~ATTR_BLINK;
4458 term->curr_attr |= (c & 0xF) << ATTR_BGSHIFT;
4459 set_erase_char(term);
4462 default: break; /* placate gcc warning about enum use */
4464 if (term->selstate != NO_SELECTION) {
4465 pos cursplus = term->curs;
4467 check_selection(term, term->curs, cursplus);
4471 term_print_flush(term);
4472 if (term->cfg.logflush)
4473 logflush(term->logctx);
4477 * To prevent having to run the reasonably tricky bidi algorithm
4478 * too many times, we maintain a cache of the last lineful of data
4479 * fed to the algorithm on each line of the display.
4481 static int term_bidi_cache_hit(Terminal *term, int line,
4482 termchar *lbefore, int width)
4486 if (!term->pre_bidi_cache)
4487 return FALSE; /* cache doesn't even exist yet! */
4489 if (line >= term->bidi_cache_size)
4490 return FALSE; /* cache doesn't have this many lines */
4492 if (!term->pre_bidi_cache[line].chars)
4493 return FALSE; /* cache doesn't contain _this_ line */
4495 if (term->pre_bidi_cache[line].width != width)
4496 return FALSE; /* line is wrong width */
4498 for (i = 0; i < width; i++)
4499 if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i))
4500 return FALSE; /* line doesn't match cache */
4502 return TRUE; /* it didn't match. */
4505 static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore,
4506 termchar *lafter, bidi_char *wcTo,
4507 int width, int size)
4511 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
4512 int j = term->bidi_cache_size;
4513 term->bidi_cache_size = line+1;
4514 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
4515 term->bidi_cache_size,
4516 struct bidi_cache_entry);
4517 term->post_bidi_cache = sresize(term->post_bidi_cache,
4518 term->bidi_cache_size,
4519 struct bidi_cache_entry);
4520 while (j < term->bidi_cache_size) {
4521 term->pre_bidi_cache[j].chars =
4522 term->post_bidi_cache[j].chars = NULL;
4523 term->pre_bidi_cache[j].width =
4524 term->post_bidi_cache[j].width = -1;
4525 term->pre_bidi_cache[j].forward =
4526 term->post_bidi_cache[j].forward = NULL;
4527 term->pre_bidi_cache[j].backward =
4528 term->post_bidi_cache[j].backward = NULL;
4533 sfree(term->pre_bidi_cache[line].chars);
4534 sfree(term->post_bidi_cache[line].chars);
4535 sfree(term->post_bidi_cache[line].forward);
4536 sfree(term->post_bidi_cache[line].backward);
4538 term->pre_bidi_cache[line].width = width;
4539 term->pre_bidi_cache[line].chars = snewn(size, termchar);
4540 term->post_bidi_cache[line].width = width;
4541 term->post_bidi_cache[line].chars = snewn(size, termchar);
4542 term->post_bidi_cache[line].forward = snewn(width, int);
4543 term->post_bidi_cache[line].backward = snewn(width, int);
4545 memcpy(term->pre_bidi_cache[line].chars, lbefore, size * TSIZE);
4546 memcpy(term->post_bidi_cache[line].chars, lafter, size * TSIZE);
4547 memset(term->post_bidi_cache[line].forward, 0, width * sizeof(int));
4548 memset(term->post_bidi_cache[line].backward, 0, width * sizeof(int));
4550 for (i = 0; i < width; i++) {
4551 int p = wcTo[i].index;
4553 assert(0 <= p && p < width);
4555 term->post_bidi_cache[line].backward[i] = p;
4556 term->post_bidi_cache[line].forward[p] = i;
4561 * Prepare the bidi information for a screen line. Returns the
4562 * transformed list of termchars, or NULL if no transformation at
4563 * all took place (because bidi is disabled). If return was
4564 * non-NULL, auxiliary information such as the forward and reverse
4565 * mappings of permutation position are available in
4566 * term->post_bidi_cache[scr_y].*.
4568 static termchar *term_bidi_line(Terminal *term, struct termline *ldata,
4574 /* Do Arabic shaping and bidi. */
4575 if(!term->cfg.bidi || !term->cfg.arabicshaping) {
4577 if (!term_bidi_cache_hit(term, scr_y, ldata->chars, term->cols)) {
4579 if (term->wcFromTo_size < term->cols) {
4580 term->wcFromTo_size = term->cols;
4581 term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size,
4583 term->wcTo = sresize(term->wcTo, term->wcFromTo_size,
4587 for(it=0; it<term->cols ; it++)
4589 unsigned long uc = (ldata->chars[it].chr);
4591 switch (uc & CSET_MASK) {
4593 if (!term->cfg.rawcnp) {
4594 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4598 uc = term->ucsdata->unitab_line[uc & 0xFF];
4601 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4604 switch (uc & CSET_MASK) {
4606 uc = term->ucsdata->unitab_font[uc & 0xFF];
4609 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4613 term->wcFrom[it].origwc = term->wcFrom[it].wc =
4615 term->wcFrom[it].index = it;
4619 do_bidi(term->wcFrom, term->cols);
4621 /* this is saved iff done from inside the shaping */
4622 if(!term->cfg.bidi && term->cfg.arabicshaping)
4623 for(it=0; it<term->cols; it++)
4624 term->wcTo[it] = term->wcFrom[it];
4626 if(!term->cfg.arabicshaping)
4627 do_shape(term->wcFrom, term->wcTo, term->cols);
4629 if (term->ltemp_size < ldata->size) {
4630 term->ltemp_size = ldata->size;
4631 term->ltemp = sresize(term->ltemp, term->ltemp_size,
4635 memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE);
4637 for(it=0; it<term->cols ; it++)
4639 term->ltemp[it] = ldata->chars[term->wcTo[it].index];
4640 if (term->ltemp[it].cc_next)
4641 term->ltemp[it].cc_next -=
4642 it - term->wcTo[it].index;
4644 if (term->wcTo[it].origwc != term->wcTo[it].wc)
4645 term->ltemp[it].chr = term->wcTo[it].wc;
4647 term_bidi_cache_store(term, scr_y, ldata->chars,
4648 term->ltemp, term->wcTo,
4649 term->cols, ldata->size);
4651 lchars = term->ltemp;
4653 lchars = term->post_bidi_cache[scr_y].chars;
4663 * Given a context, update the window. Out of paranoia, we don't
4664 * allow WM_PAINT responses to do scrolling optimisations.
4666 static void do_paint(Terminal *term, Context ctx, int may_optimise)
4668 int i, j, our_curs_y, our_curs_x;
4673 #ifdef OPTIMISE_SCROLL
4674 struct scrollregion *sr;
4675 #endif /* OPTIMISE_SCROLL */
4679 ch = snewn(chlen, wchar_t);
4681 newline = snewn(term->cols, termchar);
4683 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4686 * screen array, disptop, scrtop,
4688 * cfg.blinkpc, blink_is_real, tblinker,
4689 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4692 /* Has the cursor position or type changed ? */
4693 if (term->cursor_on) {
4694 if (term->has_focus) {
4695 if (term->cblinker || !term->cfg.blink_cur)
4696 cursor = TATTR_ACTCURS;
4700 cursor = TATTR_PASCURS;
4702 cursor |= TATTR_RIGHTCURS;
4705 our_curs_y = term->curs.y - term->disptop;
4708 * Adjust the cursor position:
4710 * - in the case where it's resting on the right-hand half
4711 * of a CJK wide character. xterm's behaviour here,
4712 * which seems adequate to me, is to display the cursor
4713 * covering the _whole_ character, exactly as if it were
4714 * one space to the left.
4716 termline *ldata = lineptr(term->curs.y);
4719 our_curs_x = term->curs.x;
4721 if ( (lchars = term_bidi_line(term, ldata, our_curs_y)) != NULL) {
4722 our_curs_x = term->post_bidi_cache[our_curs_y].forward[our_curs_x];
4724 lchars = ldata->chars;
4726 if (our_curs_x > 0 &&
4727 lchars[our_curs_x].chr == UCSWIDE)
4734 * If the cursor is not where it was last time we painted, and
4735 * its previous position is visible on screen, invalidate its
4736 * previous position.
4738 if (term->dispcursy >= 0 &&
4739 (term->curstype != cursor ||
4740 term->dispcursy != our_curs_y ||
4741 term->dispcursx != our_curs_x)) {
4742 termchar *dispcurs = term->disptext[term->dispcursy]->chars +
4745 if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE)
4746 dispcurs[-1].attr |= ATTR_INVALID;
4747 if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE)
4748 dispcurs[1].attr |= ATTR_INVALID;
4749 dispcurs->attr |= ATTR_INVALID;
4753 term->dispcursx = term->dispcursy = -1;
4755 #ifdef OPTIMISE_SCROLL
4757 sr = term->scrollhead;
4759 struct scrollregion *next = sr->next;
4760 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
4764 term->scrollhead = term->scrolltail = NULL;
4765 #endif /* OPTIMISE_SCROLL */
4767 /* The normal screen data */
4768 for (i = 0; i < term->rows; i++) {
4771 int dirty_line, dirty_run, selected;
4772 unsigned long attr = 0, cset = 0;
4773 int updated_line = 0;
4776 int last_run_dirty = 0;
4777 int laststart, dirtyrect;
4780 scrpos.y = i + term->disptop;
4781 ldata = lineptr(scrpos.y);
4783 /* Do Arabic shaping and bidi. */
4784 lchars = term_bidi_line(term, ldata, i);
4786 backward = term->post_bidi_cache[i].backward;
4788 lchars = ldata->chars;
4793 * First loop: work along the line deciding what we want
4794 * each character cell to look like.
4796 for (j = 0; j < term->cols; j++) {
4797 unsigned long tattr, tchar;
4798 termchar *d = lchars + j;
4799 scrpos.x = backward ? backward[j] : j;
4804 if (!term->cfg.ansi_colour)
4805 tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) |
4806 ATTR_DEFFG | ATTR_DEFBG;
4808 if (!term->cfg.xterm_256_colour) {
4810 colour = (tattr & ATTR_FGMASK) >> ATTR_FGSHIFT;
4811 if (colour >= 16 && colour < 256)
4812 tattr = (tattr &~ ATTR_FGMASK) | ATTR_DEFFG;
4813 colour = (tattr & ATTR_BGMASK) >> ATTR_BGSHIFT;
4814 if (colour >= 16 && colour < 256)
4815 tattr = (tattr &~ ATTR_BGMASK) | ATTR_DEFBG;
4818 switch (tchar & CSET_MASK) {
4820 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4823 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4826 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
4829 if (j < term->cols-1 && d[1].chr == UCSWIDE)
4832 /* Video reversing things */
4833 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
4834 if (term->seltype == LEXICOGRAPHIC)
4835 selected = (posle(term->selstart, scrpos) &&
4836 poslt(scrpos, term->selend));
4838 selected = (posPle(term->selstart, scrpos) &&
4839 posPlt(scrpos, term->selend));
4843 ^ (selected ? ATTR_REVERSE : 0));
4845 /* 'Real' blinking ? */
4846 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
4847 if (term->has_focus && term->tblinker) {
4848 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
4850 tattr &= ~ATTR_BLINK;
4854 * Check the font we'll _probably_ be using to see if
4855 * the character is wide when we don't want it to be.
4857 if (tchar != term->disptext[i]->chars[j].chr ||
4858 tattr != (term->disptext[i]->chars[j].attr &~
4859 (ATTR_NARROW | DATTR_MASK))) {
4860 if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2)
4861 tattr |= ATTR_NARROW;
4862 } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW)
4863 tattr |= ATTR_NARROW;
4865 if (i == our_curs_y && j == our_curs_x) {
4867 term->curstype = cursor;
4868 term->dispcursx = j;
4869 term->dispcursy = i;
4873 newline[j].attr = tattr;
4874 newline[j].chr = tchar;
4875 /* Combining characters are still read from lchars */
4876 newline[j].cc_next = 0;
4880 * Now loop over the line again, noting where things have
4883 * During this loop, we keep track of where we last saw
4884 * DATTR_STARTRUN. Any mismatch automatically invalidates
4885 * _all_ of the containing run that was last printed: that
4886 * is, any rectangle that was drawn in one go in the
4887 * previous update should be either left completely alone
4888 * or overwritten in its entirety. This, along with the
4889 * expectation that front ends clip all text runs to their
4890 * bounding rectangle, should solve any possible problems
4891 * with fonts that overflow their character cells.
4895 for (j = 0; j < term->cols; j++) {
4896 if (term->disptext[i]->chars[j].attr & DATTR_STARTRUN) {
4901 if (term->disptext[i]->chars[j].chr != newline[j].chr ||
4902 (term->disptext[i]->chars[j].attr &~ DATTR_MASK)
4903 != newline[j].attr) {
4907 for (k = laststart; k < j; k++)
4908 term->disptext[i]->chars[k].attr |= ATTR_INVALID;
4915 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4919 * Finally, loop once more and actually do the drawing.
4921 dirty_run = dirty_line = (ldata->lattr !=
4922 term->disptext[i]->lattr);
4923 term->disptext[i]->lattr = ldata->lattr;
4925 for (j = 0; j < term->cols; j++) {
4926 unsigned long tattr, tchar;
4927 int break_run, do_copy;
4928 termchar *d = lchars + j;
4930 tattr = newline[j].attr;
4931 tchar = newline[j].chr;
4933 if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE)
4936 break_run = ((tattr ^ attr) & term->attr_mask) != 0;
4938 /* Special hack for VT100 Linedraw glyphs */
4939 if (tchar >= 0x23BA && tchar <= 0x23BD)
4943 * Separate out sequences of characters that have the
4944 * same CSET, if that CSET is a magic one.
4946 if (CSET_OF(tchar) != cset)
4950 * Break on both sides of any combined-character cell.
4952 if (d->cc_next != 0 ||
4953 (j > 0 && d[-1].cc_next != 0))
4956 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
4957 if (term->disptext[i]->chars[j].chr == tchar &&
4958 (term->disptext[i]->chars[j].attr &~ DATTR_MASK) == tattr)
4960 else if (!dirty_run && ccount == 1)
4965 if ((dirty_run || last_run_dirty) && ccount > 0) {
4966 do_text(ctx, start, i, ch, ccount, attr,
4968 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
4969 do_cursor(ctx, start, i, ch, ccount, attr,
4977 cset = CSET_OF(tchar);
4978 if (term->ucsdata->dbcs_screenfont)
4979 last_run_dirty = dirty_run;
4980 dirty_run = dirty_line;
4984 if (!termchars_equal_override(&term->disptext[i]->chars[j],
4990 if (ccount >= chlen) {
4991 chlen = ccount + 256;
4992 ch = sresize(ch, chlen, wchar_t);
4994 ch[ccount++] = (wchar_t) tchar;
4999 while (dd->cc_next) {
5000 unsigned long schar;
5005 switch (schar & CSET_MASK) {
5007 schar = term->ucsdata->unitab_line[schar & 0xFF];
5010 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
5013 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
5017 if (ccount >= chlen) {
5018 chlen = ccount + 256;
5019 ch = sresize(ch, chlen, wchar_t);
5021 ch[ccount++] = (wchar_t) schar;
5024 attr |= TATTR_COMBINING;
5028 copy_termchar(term->disptext[i], j, d);
5029 term->disptext[i]->chars[j].chr = tchar;
5030 term->disptext[i]->chars[j].attr = tattr;
5032 term->disptext[i]->chars[j].attr |= DATTR_STARTRUN;
5035 /* If it's a wide char step along to the next one. */
5036 if (tattr & ATTR_WIDE) {
5037 if (++j < term->cols) {
5040 * By construction above, the cursor should not
5041 * be on the right-hand half of this character.
5044 assert(!(i == our_curs_y && j == our_curs_x));
5045 if (!termchars_equal(&term->disptext[i]->chars[j], d))
5047 copy_termchar(term->disptext[i], j, d);
5051 if (dirty_run && ccount > 0) {
5052 do_text(ctx, start, i, ch, ccount, attr,
5054 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
5055 do_cursor(ctx, start, i, ch, ccount, attr,
5069 * Invalidate the whole screen so it will be repainted in full.
5071 void term_invalidate(Terminal *term)
5075 for (i = 0; i < term->rows; i++)
5076 for (j = 0; j < term->cols; j++)
5077 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5079 term_schedule_update(term);
5083 * Paint the window in response to a WM_PAINT message.
5085 void term_paint(Terminal *term, Context ctx,
5086 int left, int top, int right, int bottom, int immediately)
5089 if (left < 0) left = 0;
5090 if (top < 0) top = 0;
5091 if (right >= term->cols) right = term->cols-1;
5092 if (bottom >= term->rows) bottom = term->rows-1;
5094 for (i = top; i <= bottom && i < term->rows; i++) {
5095 if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM)
5096 for (j = left; j <= right && j < term->cols; j++)
5097 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5099 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
5100 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5104 do_paint (term, ctx, FALSE);
5106 term_schedule_update(term);
5111 * Attempt to scroll the scrollback. The second parameter gives the
5112 * position we want to scroll to; the first is +1 to denote that
5113 * this position is relative to the beginning of the scrollback, -1
5114 * to denote it is relative to the end, and 0 to denote that it is
5115 * relative to the current position.
5117 void term_scroll(Terminal *term, int rel, int where)
5119 int sbtop = -sblines(term);
5120 #ifdef OPTIMISE_SCROLL
5121 int olddisptop = term->disptop;
5123 #endif /* OPTIMISE_SCROLL */
5125 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
5126 if (term->disptop < sbtop)
5127 term->disptop = sbtop;
5128 if (term->disptop > 0)
5131 #ifdef OPTIMISE_SCROLL
5132 shift = (term->disptop - olddisptop);
5133 if (shift < term->rows && shift > -term->rows)
5134 scroll_display(term, 0, term->rows - 1, shift);
5135 #endif /* OPTIMISE_SCROLL */
5140 * Scroll the scrollback to centre it on the beginning or end of the
5141 * current selection, if any.
5143 void term_scroll_to_selection(Terminal *term, int which_end)
5147 int sbtop = -sblines(term);
5149 if (term->selstate != SELECTED)
5152 target = term->selend;
5154 target = term->selstart;
5156 y = target.y - term->rows/2;
5161 term_scroll(term, -1, y);
5165 * Helper routine for clipme(): growing buffer.
5168 int buflen; /* amount of allocated space in textbuf/attrbuf */
5169 int bufpos; /* amount of actual data */
5170 wchar_t *textbuf; /* buffer for copied text */
5171 wchar_t *textptr; /* = textbuf + bufpos (current insertion point) */
5172 int *attrbuf; /* buffer for copied attributes */
5173 int *attrptr; /* = attrbuf + bufpos */
5176 static void clip_addchar(clip_workbuf *b, wchar_t chr, int attr)
5178 if (b->bufpos >= b->buflen) {
5180 b->textbuf = sresize(b->textbuf, b->buflen, wchar_t);
5181 b->textptr = b->textbuf + b->bufpos;
5182 b->attrbuf = sresize(b->attrbuf, b->buflen, int);
5183 b->attrptr = b->attrbuf + b->bufpos;
5185 *b->textptr++ = chr;
5186 *b->attrptr++ = attr;
5190 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
5198 buf.textptr = buf.textbuf = snewn(buf.buflen, wchar_t);
5199 buf.attrptr = buf.attrbuf = snewn(buf.buflen, int);
5201 old_top_x = top.x; /* needed for rect==1 */
5203 while (poslt(top, bottom)) {
5205 termline *ldata = lineptr(top.y);
5209 * nlpos will point at the maximum position on this line we
5210 * should copy up to. So we start it at the end of the
5214 nlpos.x = term->cols;
5217 * ... move it backwards if there's unused space at the end
5218 * of the line (and also set `nl' if this is the case,
5219 * because in normal selection mode this means we need a
5220 * newline at the end)...
5222 if (!(ldata->lattr & LATTR_WRAPPED)) {
5224 IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) &&
5225 !ldata->chars[nlpos.x - 1].cc_next &&
5228 if (poslt(nlpos, bottom))
5230 } else if (ldata->lattr & LATTR_WRAPPED2) {
5231 /* Ignore the last char on the line in a WRAPPED2 line. */
5236 * ... and then clip it to the terminal x coordinate if
5237 * we're doing rectangular selection. (In this case we
5238 * still did the above, so that copying e.g. the right-hand
5239 * column from a table doesn't fill with spaces on the
5243 if (nlpos.x > bottom.x)
5245 nl = (top.y < bottom.y);
5248 while (poslt(top, bottom) && poslt(top, nlpos)) {
5251 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
5253 wchar_t cbuf[16], *p;
5257 if (ldata->chars[x].chr == UCSWIDE) {
5263 int uc = ldata->chars[x].chr;
5264 attr = ldata->chars[x].attr;
5266 switch (uc & CSET_MASK) {
5268 if (!term->cfg.rawcnp) {
5269 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5273 uc = term->ucsdata->unitab_line[uc & 0xFF];
5276 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5279 switch (uc & CSET_MASK) {
5281 uc = term->ucsdata->unitab_font[uc & 0xFF];
5284 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5288 set = (uc & CSET_MASK);
5289 c = (uc & ~CSET_MASK);
5290 #ifdef PLATFORM_IS_UTF16
5291 if (uc > 0x10000 && uc < 0x110000) {
5292 cbuf[0] = 0xD800 | ((uc - 0x10000) >> 10);
5293 cbuf[1] = 0xDC00 | ((uc - 0x10000) & 0x3FF);
5302 if (DIRECT_FONT(uc)) {
5303 if (c >= ' ' && c != 0x7F) {
5307 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
5309 buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr);
5310 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
5314 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
5318 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
5325 for (p = cbuf; *p; p++)
5326 clip_addchar(&buf, *p, attr);
5328 if (ldata->chars[x].cc_next)
5329 x += ldata->chars[x].cc_next;
5337 for (i = 0; i < sel_nl_sz; i++)
5338 clip_addchar(&buf, sel_nl[i], 0);
5341 top.x = rect ? old_top_x : 0;
5345 #if SELECTION_NUL_TERMINATED
5346 clip_addchar(&buf, 0, 0);
5348 /* Finally, transfer all that to the clipboard. */
5349 write_clip(term->frontend, buf.textbuf, buf.attrbuf, buf.bufpos, desel);
5354 void term_copyall(Terminal *term)
5358 tree234 *screen = term->screen;
5359 top.y = -sblines(term);
5361 bottom.y = find_last_nonempty_line(term, screen);
5362 bottom.x = term->cols;
5363 clipme(term, top, bottom, 0, TRUE);
5367 * The wordness array is mainly for deciding the disposition of the
5368 * US-ASCII characters.
5370 static int wordtype(Terminal *term, int uc)
5373 int start, end, ctype;
5375 static const struct ucsword ucs_words[] = {
5381 0x037e, 0x037e, 1}, /* Greek question mark */
5383 0x0387, 0x0387, 1}, /* Greek ano teleia */
5385 0x055a, 0x055f, 1}, /* Armenian punctuation */
5387 0x0589, 0x0589, 1}, /* Armenian full stop */
5389 0x0700, 0x070d, 1}, /* Syriac punctuation */
5391 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5393 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5395 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5397 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5399 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5401 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5403 0x2000, 0x200a, 0}, /* Various spaces */
5405 0x2070, 0x207f, 2}, /* superscript */
5407 0x2080, 0x208f, 2}, /* subscript */
5409 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5411 0x3000, 0x3000, 0}, /* ideographic space */
5413 0x3001, 0x3020, 1}, /* ideographic punctuation */
5415 0x303f, 0x309f, 3}, /* Hiragana */
5417 0x30a0, 0x30ff, 3}, /* Katakana */
5419 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5421 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5423 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5425 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5427 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5429 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5431 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5433 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5435 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5439 const struct ucsword *wptr;
5441 switch (uc & CSET_MASK) {
5443 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5446 uc = term->ucsdata->unitab_line[uc & 0xFF];
5449 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5452 switch (uc & CSET_MASK) {
5454 uc = term->ucsdata->unitab_font[uc & 0xFF];
5457 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5461 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5462 * fail as there's such a thing as a double width space. :-(
5464 if (term->ucsdata->dbcs_screenfont &&
5465 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5469 return term->wordness[uc];
5471 for (wptr = ucs_words; wptr->start; wptr++) {
5472 if (uc >= wptr->start && uc <= wptr->end)
5480 * Spread the selection outwards according to the selection mode.
5482 static pos sel_spread_half(Terminal *term, pos p, int dir)
5486 int topy = -sblines(term);
5488 ldata = lineptr(p.y);
5490 switch (term->selmode) {
5493 * In this mode, every character is a separate unit, except
5494 * for runs of spaces at the end of a non-wrapping line.
5496 if (!(ldata->lattr & LATTR_WRAPPED)) {
5497 termchar *q = ldata->chars + term->cols;
5498 while (q > ldata->chars &&
5499 IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next)
5501 if (q == ldata->chars + term->cols)
5503 if (p.x >= q - ldata->chars)
5504 p.x = (dir == -1 ? q - ldata->chars : term->cols - 1);
5509 * In this mode, the units are maximal runs of characters
5510 * whose `wordness' has the same value.
5512 wvalue = wordtype(term, UCSGET(ldata->chars, p.x));
5515 int maxcols = (ldata->lattr & LATTR_WRAPPED2 ?
5516 term->cols-1 : term->cols);
5517 if (p.x < maxcols-1) {
5518 if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue)
5523 if (ldata->lattr & LATTR_WRAPPED) {
5525 ldata2 = lineptr(p.y+1);
5526 if (wordtype(term, UCSGET(ldata2->chars, 0))
5543 if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue)
5552 ldata2 = lineptr(p.y-1);
5553 maxcols = (ldata2->lattr & LATTR_WRAPPED2 ?
5554 term->cols-1 : term->cols);
5555 if (ldata2->lattr & LATTR_WRAPPED) {
5556 if (wordtype(term, UCSGET(ldata2->chars, maxcols-1))
5574 * In this mode, every line is a unit.
5576 p.x = (dir == -1 ? 0 : term->cols - 1);
5584 static void sel_spread(Terminal *term)
5586 if (term->seltype == LEXICOGRAPHIC) {
5587 term->selstart = sel_spread_half(term, term->selstart, -1);
5588 decpos(term->selend);
5589 term->selend = sel_spread_half(term, term->selend, +1);
5590 incpos(term->selend);
5594 void term_do_paste(Terminal *term)
5599 get_clip(term->frontend, &data, &len);
5600 if (data && len > 0) {
5603 term_seen_key_event(term); /* pasted data counts */
5605 if (term->paste_buffer)
5606 sfree(term->paste_buffer);
5607 term->paste_pos = term->paste_hold = term->paste_len = 0;
5608 term->paste_buffer = snewn(len, wchar_t);
5611 while (p < data + len) {
5612 while (p < data + len &&
5613 !(p <= data + len - sel_nl_sz &&
5614 !memcmp(p, sel_nl, sizeof(sel_nl))))
5619 for (i = 0; i < p - q; i++) {
5620 term->paste_buffer[term->paste_len++] = q[i];
5624 if (p <= data + len - sel_nl_sz &&
5625 !memcmp(p, sel_nl, sizeof(sel_nl))) {
5626 term->paste_buffer[term->paste_len++] = '\015';
5632 /* Assume a small paste will be OK in one go. */
5633 if (term->paste_len < 256) {
5635 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
5636 if (term->paste_buffer)
5637 sfree(term->paste_buffer);
5638 term->paste_buffer = 0;
5639 term->paste_pos = term->paste_hold = term->paste_len = 0;
5642 get_clip(term->frontend, NULL, NULL);
5645 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
5646 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
5650 int raw_mouse = (term->xterm_mouse &&
5651 !term->cfg.no_mouse_rep &&
5652 !(term->cfg.mouse_override && shift));
5653 int default_seltype;
5657 if (a == MA_DRAG && !raw_mouse)
5658 term_scroll(term, 0, -1);
5660 if (y >= term->rows) {
5662 if (a == MA_DRAG && !raw_mouse)
5663 term_scroll(term, 0, +1);
5672 if (x >= term->cols)
5675 selpoint.y = y + term->disptop;
5676 ldata = lineptr(selpoint.y);
5678 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM)
5682 * Transform x through the bidi algorithm to find the _logical_
5683 * click point from the physical one.
5685 if (term_bidi_line(term, ldata, y) != NULL) {
5686 x = term->post_bidi_cache[y].backward[x];
5693 * If we're in the middle of a selection operation, we ignore raw
5694 * mouse mode until it's done (we must have been not in raw mouse
5695 * mode when it started).
5696 * This makes use of Shift for selection reliable, and avoids the
5697 * host seeing mouse releases for which they never saw corresponding
5701 (term->selstate != ABOUT_TO) && (term->selstate != DRAGGING)) {
5702 int encstate = 0, r, c;
5709 encstate = 0x20; /* left button down */
5720 case MBT_WHEEL_DOWN:
5723 default: break; /* placate gcc warning about enum use */
5727 if (term->xterm_mouse == 1)
5733 term->mouse_is_down = 0;
5736 if (term->mouse_is_down == braw)
5738 term->mouse_is_down = braw;
5740 default: break; /* placate gcc warning about enum use */
5749 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
5750 ldisc_send(term->ldisc, abuf, 6, 0);
5756 * Set the selection type (rectangular or normal) at the start
5757 * of a selection attempt, from the state of Alt.
5759 if (!alt ^ !term->cfg.rect_select)
5760 default_seltype = RECTANGULAR;
5762 default_seltype = LEXICOGRAPHIC;
5764 if (term->selstate == NO_SELECTION) {
5765 term->seltype = default_seltype;
5768 if (bcooked == MBT_SELECT && a == MA_CLICK) {
5770 term->selstate = ABOUT_TO;
5771 term->seltype = default_seltype;
5772 term->selanchor = selpoint;
5773 term->selmode = SM_CHAR;
5774 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
5776 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
5777 term->selstate = DRAGGING;
5778 term->selstart = term->selanchor = selpoint;
5779 term->selend = term->selstart;
5780 incpos(term->selend);
5782 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
5783 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
5784 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
5786 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
5787 term->selstate == SELECTED) {
5788 if (term->seltype == LEXICOGRAPHIC) {
5790 * For normal selection, we extend by moving
5791 * whichever end of the current selection is closer
5794 if (posdiff(selpoint, term->selstart) <
5795 posdiff(term->selend, term->selstart) / 2) {
5796 term->selanchor = term->selend;
5797 decpos(term->selanchor);
5799 term->selanchor = term->selstart;
5803 * For rectangular selection, we have a choice of
5804 * _four_ places to put selanchor and selpoint: the
5805 * four corners of the selection.
5807 if (2*selpoint.x < term->selstart.x + term->selend.x)
5808 term->selanchor.x = term->selend.x-1;
5810 term->selanchor.x = term->selstart.x;
5812 if (2*selpoint.y < term->selstart.y + term->selend.y)
5813 term->selanchor.y = term->selend.y;
5815 term->selanchor.y = term->selstart.y;
5817 term->selstate = DRAGGING;
5819 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
5820 term->selanchor = selpoint;
5821 term->selstate = DRAGGING;
5822 if (term->seltype == LEXICOGRAPHIC) {
5824 * For normal selection, we set (selstart,selend) to
5825 * (selpoint,selanchor) in some order.
5827 if (poslt(selpoint, term->selanchor)) {
5828 term->selstart = selpoint;
5829 term->selend = term->selanchor;
5830 incpos(term->selend);
5832 term->selstart = term->selanchor;
5833 term->selend = selpoint;
5834 incpos(term->selend);
5838 * For rectangular selection, we may need to
5839 * interchange x and y coordinates (if the user has
5840 * dragged in the -x and +y directions, or vice versa).
5842 term->selstart.x = min(term->selanchor.x, selpoint.x);
5843 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
5844 term->selstart.y = min(term->selanchor.y, selpoint.y);
5845 term->selend.y = max(term->selanchor.y, selpoint.y);
5848 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
5850 if (term->selstate == DRAGGING) {
5852 * We've completed a selection. We now transfer the
5853 * data to the clipboard.
5855 clipme(term, term->selstart, term->selend,
5856 (term->seltype == RECTANGULAR), FALSE);
5857 term->selstate = SELECTED;
5859 term->selstate = NO_SELECTION;
5860 } else if (bcooked == MBT_PASTE
5862 #if MULTICLICK_ONLY_EVENT
5863 || a == MA_2CLK || a == MA_3CLK
5866 request_paste(term->frontend);
5872 int format_arrow_key(char *buf, Terminal *term, int xkey, int ctrl)
5876 if (term->vt52_mode)
5877 p += sprintf((char *) p, "\x1B%c", xkey);
5879 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
5882 * RDB: VT100 & VT102 manuals both state the app cursor
5883 * keys only work if the app keypad is on.
5885 * SGT: That may well be true, but xterm disagrees and so
5886 * does at least one application, so I've #if'ed this out
5887 * and the behaviour is back to PuTTY's original: app
5888 * cursor and app keypad are independently switchable
5889 * modes. If anyone complains about _this_ I'll have to
5890 * put in a configurable option.
5892 if (!term->app_keypad_keys)
5895 /* Useful mapping of Ctrl-arrows */
5900 p += sprintf((char *) p, "\x1BO%c", xkey);
5902 p += sprintf((char *) p, "\x1B[%c", xkey);
5908 void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
5909 unsigned int modifiers, unsigned int flags)
5913 int prependesc = FALSE;
5917 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
5918 for (i = 0; i < tlen; i++)
5919 fprintf(stderr, " %04x", (unsigned)text[i]);
5920 fprintf(stderr, "\n");
5924 if ((flags & PKF_REPEAT) && term->repeat_off)
5927 /* Currently, Meta always just prefixes everything with ESC. */
5928 if (modifiers & PKM_META)
5930 modifiers &= ~PKM_META;
5933 * Alt is only used for Alt+keypad, which isn't supported yet, so
5936 modifiers &= ~PKM_ALT;
5938 /* Standard local function keys */
5939 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
5941 if (keysym == PK_PAGEUP)
5942 /* scroll up one page */;
5943 if (keysym == PK_PAGEDOWN)
5944 /* scroll down on page */;
5945 if (keysym == PK_INSERT)
5946 term_do_paste(term);
5949 if (keysym == PK_PAGEUP)
5950 /* scroll up one line */;
5951 if (keysym == PK_PAGEDOWN)
5952 /* scroll down one line */;
5953 /* Control-Numlock for app-keypad mode switch */
5954 if (keysym == PK_PF1)
5955 term->app_keypad_keys ^= 1;
5959 if (modifiers & PKM_ALT) {
5960 /* Alt+F4 (close) */
5961 /* Alt+Return (full screen) */
5962 /* Alt+Space (system menu) */
5965 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
5966 text[0] >= 0x20 && text[0] <= 0x7e) {
5967 /* ASCII chars + Control */
5968 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
5969 (text[0] >= 0x61 && text[0] <= 0x7a))
5973 * Control-2 should return ^@ (0x00), Control-6 should return
5974 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5975 * the DOS keyboard handling did it, and we have nothing better
5976 * to do with the key combo in question, we'll also map
5977 * Control-Backquote to ^\ (0x1C).
5980 case ' ': text[0] = 0x00; break;
5981 case '-': text[0] = 0x1f; break;
5982 case '/': text[0] = 0x1f; break;
5983 case '2': text[0] = 0x00; break;
5984 case '3': text[0] = 0x1b; break;
5985 case '4': text[0] = 0x1c; break;
5986 case '5': text[0] = 0x1d; break;
5987 case '6': text[0] = 0x1e; break;
5988 case '7': text[0] = 0x1f; break;
5989 case '8': text[0] = 0x7f; break;
5990 case '`': text[0] = 0x1c; break;
5995 /* Nethack keypad */
5996 if (term->cfg.nethack_keypad) {
5999 case PK_KP1: c = 'b'; break;
6000 case PK_KP2: c = 'j'; break;
6001 case PK_KP3: c = 'n'; break;
6002 case PK_KP4: c = 'h'; break;
6003 case PK_KP5: c = '.'; break;
6004 case PK_KP6: c = 'l'; break;
6005 case PK_KP7: c = 'y'; break;
6006 case PK_KP8: c = 'k'; break;
6007 case PK_KP9: c = 'u'; break;
6008 default: break; /* else gcc warns `enum value not used' */
6012 if (modifiers & PKM_CONTROL)
6014 else if (modifiers & PKM_SHIFT)
6015 c = toupper((unsigned char)c);
6022 /* Numeric Keypad */
6023 if (PK_ISKEYPAD(keysym)) {
6027 * In VT400 mode, PFn always emits an escape sequence. In
6028 * Linux and tilde modes, this only happens in app keypad mode.
6030 if (term->cfg.funky_type == FUNKY_VT400 ||
6031 ((term->cfg.funky_type == FUNKY_LINUX ||
6032 term->cfg.funky_type == FUNKY_TILDE) &&
6033 term->app_keypad_keys && !term->cfg.no_applic_k)) {
6035 case PK_PF1: xkey = 'P'; break;
6036 case PK_PF2: xkey = 'Q'; break;
6037 case PK_PF3: xkey = 'R'; break;
6038 case PK_PF4: xkey = 'S'; break;
6039 default: break; /* else gcc warns `enum value not used' */
6042 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
6044 case PK_KP0: xkey = 'p'; break;
6045 case PK_KP1: xkey = 'q'; break;
6046 case PK_KP2: xkey = 'r'; break;
6047 case PK_KP3: xkey = 's'; break;
6048 case PK_KP4: xkey = 't'; break;
6049 case PK_KP5: xkey = 'u'; break;
6050 case PK_KP6: xkey = 'v'; break;
6051 case PK_KP7: xkey = 'w'; break;
6052 case PK_KP8: xkey = 'x'; break;
6053 case PK_KP9: xkey = 'y'; break;
6054 case PK_KPDECIMAL: xkey = 'n'; break;
6055 case PK_KPENTER: xkey = 'M'; break;
6056 default: break; /* else gcc warns `enum value not used' */
6058 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
6060 * xterm can't see the layout of the keypad, so it has
6061 * to rely on the X keysyms returned by the keys.
6062 * Hence, we look at the strings here, not the PuTTY
6063 * keysyms (which describe the layout).
6067 if (modifiers & PKM_SHIFT)
6072 case '/': xkey = 'o'; break;
6073 case '*': xkey = 'j'; break;
6074 case '-': xkey = 'm'; break;
6078 * In all other modes, we try to retain the layout of
6079 * the DEC keypad in application mode.
6083 /* This key covers the '-' and ',' keys on a VT220 */
6084 if (modifiers & PKM_SHIFT)
6085 xkey = 'm'; /* VT220 '-' */
6087 xkey = 'l'; /* VT220 ',' */
6089 case PK_KPMINUS: xkey = 'm'; break;
6090 case PK_KPCOMMA: xkey = 'l'; break;
6091 default: break; /* else gcc warns `enum value not used' */
6096 if (term->vt52_mode) {
6097 if (xkey >= 'P' && xkey <= 'S')
6098 p += sprintf((char *) p, "\x1B%c", xkey);
6100 p += sprintf((char *) p, "\x1B?%c", xkey);
6102 p += sprintf((char *) p, "\x1BO%c", xkey);
6105 /* Not in application mode -- treat the number pad as arrow keys? */
6106 if ((flags & PKF_NUMLOCK) == 0) {
6108 case PK_KP0: keysym = PK_INSERT; break;
6109 case PK_KP1: keysym = PK_END; break;
6110 case PK_KP2: keysym = PK_DOWN; break;
6111 case PK_KP3: keysym = PK_PAGEDOWN; break;
6112 case PK_KP4: keysym = PK_LEFT; break;
6113 case PK_KP5: keysym = PK_REST; break;
6114 case PK_KP6: keysym = PK_RIGHT; break;
6115 case PK_KP7: keysym = PK_HOME; break;
6116 case PK_KP8: keysym = PK_UP; break;
6117 case PK_KP9: keysym = PK_PAGEUP; break;
6118 default: break; /* else gcc warns `enum value not used' */
6123 /* Miscellaneous keys */
6130 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
6131 else if (modifiers == PKM_SHIFT)
6132 /* We do the opposite of what is configured */
6133 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
6139 else if (modifiers == PKM_SHIFT)
6140 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
6143 /* XXX window.c has ctrl+shift+space sending 0xa0 */
6145 if (modifiers == PKM_CONTROL)
6150 case PK_KPENTER: /* Odd keypad modes handled above */
6151 if (modifiers == 0) {
6153 if (term->cr_lf_return)
6157 default: break; /* else gcc warns `enum value not used' */
6160 /* SCO function keys and editing keys */
6161 if (term->cfg.funky_type == FUNKY_SCO) {
6162 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
6163 static char const codes[] =
6164 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
6165 int index = keysym - PK_F1;
6167 if (modifiers & PKM_SHIFT) index += 12;
6168 if (modifiers & PKM_CONTROL) index += 24;
6169 p += sprintf((char *) p, "\x1B[%c", codes[index]);
6172 if (PK_ISEDITING(keysym)) {
6176 case PK_DELETE: *p++ = 0x7f; goto done;
6177 case PK_HOME: xkey = 'H'; break;
6178 case PK_INSERT: xkey = 'L'; break;
6179 case PK_END: xkey = 'F'; break;
6180 case PK_PAGEUP: xkey = 'I'; break;
6181 case PK_PAGEDOWN: xkey = 'G'; break;
6182 default: break; /* else gcc warns `enum value not used' */
6184 p += sprintf((char *) p, "\x1B[%c", xkey);
6188 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
6191 if (term->cfg.funky_type == FUNKY_XTERM) {
6192 /* Xterm shuffles these keys, apparently. */
6194 case PK_HOME: keysym = PK_INSERT; break;
6195 case PK_INSERT: keysym = PK_HOME; break;
6196 case PK_DELETE: keysym = PK_END; break;
6197 case PK_END: keysym = PK_PAGEUP; break;
6198 case PK_PAGEUP: keysym = PK_DELETE; break;
6199 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
6200 default: break; /* else gcc warns `enum value not used' */
6205 if (term->cfg.rxvt_homeend &&
6206 (keysym == PK_HOME || keysym == PK_END)) {
6207 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
6211 if (term->vt52_mode) {
6215 * A real VT52 doesn't have these, and a VT220 doesn't
6216 * send anything for them in VT52 mode.
6219 case PK_HOME: xkey = 'H'; break;
6220 case PK_INSERT: xkey = 'L'; break;
6221 case PK_DELETE: xkey = 'M'; break;
6222 case PK_END: xkey = 'E'; break;
6223 case PK_PAGEUP: xkey = 'I'; break;
6224 case PK_PAGEDOWN: xkey = 'G'; break;
6225 default: xkey=0; break; /* else gcc warns `enum value not used'*/
6227 p += sprintf((char *) p, "\x1B%c", xkey);
6232 case PK_HOME: code = 1; break;
6233 case PK_INSERT: code = 2; break;
6234 case PK_DELETE: code = 3; break;
6235 case PK_END: code = 4; break;
6236 case PK_PAGEUP: code = 5; break;
6237 case PK_PAGEDOWN: code = 6; break;
6238 default: code = 0; break; /* else gcc warns `enum value not used' */
6240 p += sprintf((char *) p, "\x1B[%d~", code);
6244 if (PK_ISFKEY(keysym)) {
6245 /* Map Shift+F1-F10 to F11-F20 */
6246 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
6248 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
6250 /* XXX This overrides the XTERM/VT52 mode below */
6252 if (keysym >= PK_F6) offt++;
6253 if (keysym >= PK_F12) offt++;
6254 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
6255 'P' + keysym - PK_F1 - offt);
6258 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
6259 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
6262 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
6263 if (term->vt52_mode)
6264 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
6266 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
6269 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
6273 if (PK_ISCURSOR(keysym)) {
6277 case PK_UP: xkey = 'A'; break;
6278 case PK_DOWN: xkey = 'B'; break;
6279 case PK_RIGHT: xkey = 'C'; break;
6280 case PK_LEFT: xkey = 'D'; break;
6281 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
6282 default: xkey = 0; break; /* else gcc warns `enum value not used' */
6284 p += format_arrow_key(p, term, xkey, modifiers == PKM_CONTROL);
6289 if (p > output || tlen > 0) {
6291 * Interrupt an ongoing paste. I'm not sure
6292 * this is sensible, but for the moment it's
6293 * preferable to having to faff about buffering
6299 * We need not bother about stdin backlogs
6300 * here, because in GUI PuTTY we can't do
6301 * anything about it anyway; there's no means
6302 * of asking Windows to hold off on KEYDOWN
6303 * messages. We _have_ to buffer everything
6306 term_seen_key_event(term);
6310 fprintf(stderr, "sending ESC\n");
6312 ldisc_send(term->ldisc, "\x1b", 1, 1);
6317 fprintf(stderr, "sending %d bytes:", p - output);
6318 for (i = 0; i < p - output; i++)
6319 fprintf(stderr, " %02x", output[i]);
6320 fprintf(stderr, "\n");
6322 ldisc_send(term->ldisc, output, p - output, 1);
6323 } else if (tlen > 0) {
6325 fprintf(stderr, "sending %d unichars:", tlen);
6326 for (i = 0; i < tlen; i++)
6327 fprintf(stderr, " %04x", (unsigned) text[i]);
6328 fprintf(stderr, "\n");
6330 luni_send(term->ldisc, text, tlen, 1);
6335 void term_nopaste(Terminal *term)
6337 if (term->paste_len == 0)
6339 sfree(term->paste_buffer);
6340 term->paste_buffer = NULL;
6341 term->paste_len = 0;
6344 int term_paste_pending(Terminal *term)
6346 return term->paste_len != 0;
6349 void term_paste(Terminal *term)
6351 long now, paste_diff;
6353 if (term->paste_len == 0)
6356 /* Don't wait forever to paste */
6357 if (term->paste_hold) {
6358 now = GETTICKCOUNT();
6359 paste_diff = now - term->last_paste;
6360 if (paste_diff >= 0 && paste_diff < 450)
6363 term->paste_hold = 0;
6365 while (term->paste_pos < term->paste_len) {
6367 while (n + term->paste_pos < term->paste_len) {
6368 if (term->paste_buffer[term->paste_pos + n++] == '\015')
6372 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
6373 term->paste_pos += n;
6375 if (term->paste_pos < term->paste_len) {
6376 term->paste_hold = 1;
6380 sfree(term->paste_buffer);
6381 term->paste_buffer = NULL;
6382 term->paste_len = 0;
6385 static void deselect(Terminal *term)
6387 term->selstate = NO_SELECTION;
6388 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
6391 void term_deselect(Terminal *term)
6397 int term_ldisc(Terminal *term, int option)
6399 if (option == LD_ECHO)
6400 return term->term_echoing;
6401 if (option == LD_EDIT)
6402 return term->term_editing;
6406 int term_data(Terminal *term, int is_stderr, const char *data, int len)
6408 bufchain_add(&term->inbuf, data, len);
6410 if (!term->in_term_out) {
6411 term->in_term_out = TRUE;
6412 term_reset_cblink(term);
6414 * During drag-selects, we do not process terminal input,
6415 * because the user will want the screen to hold still to
6418 if (term->selstate != DRAGGING)
6420 term->in_term_out = FALSE;
6424 * term_out() always completely empties inbuf. Therefore,
6425 * there's no reason at all to return anything other than zero
6426 * from this function, because there _can't_ be a question of
6427 * the remote side needing to wait until term_out() has cleared
6430 * This is a slightly suboptimal way to deal with SSH-2 - in
6431 * principle, the window mechanism would allow us to continue
6432 * to accept data on forwarded ports and X connections even
6433 * while the terminal processing was going slowly - but we
6434 * can't do the 100% right thing without moving the terminal
6435 * processing into a separate thread, and that might hurt
6436 * portability. So we manage stdout buffering the old SSH-1 way:
6437 * if the terminal processing goes slowly, the whole SSH
6438 * connection stops accepting data until it's ready.
6440 * In practice, I can't imagine this causing serious trouble.
6446 * Write untrusted data to the terminal.
6447 * The only control character that should be honoured is \n (which
6448 * will behave as a CRLF).
6450 int term_data_untrusted(Terminal *term, const char *data, int len)
6453 /* FIXME: more sophisticated checking? */
6454 for (i = 0; i < len; i++) {
6455 if (data[i] == '\n')
6456 term_data(term, 1, "\r\n", 2);
6457 else if (data[i] & 0x60)
6458 term_data(term, 1, data + i, 1);
6460 return 0; /* assumes that term_data() always returns 0 */
6463 void term_provide_logctx(Terminal *term, void *logctx)
6465 term->logctx = logctx;
6468 void term_set_focus(Terminal *term, int has_focus)
6470 term->has_focus = has_focus;
6471 term_schedule_cblink(term);
6475 * Provide "auto" settings for remote tty modes, suitable for an
6476 * application with a terminal window.
6478 char *term_get_ttymode(Terminal *term, const char *mode)
6481 if (strcmp(mode, "ERASE") == 0) {
6482 val = term->cfg.bksp_is_delete ? "^?" : "^H";
6484 /* FIXME: perhaps we should set ONLCR based on cfg.lfhascr as well? */
6485 /* FIXME: or ECHO and friends based on local echo state? */
6489 struct term_userpass_state {
6491 int done_prompt; /* printed out prompt yet? */
6492 size_t pos; /* cursor position */
6496 * Process some terminal data in the course of username/password
6499 int term_get_userpass_input(Terminal *term, prompts_t *p,
6500 unsigned char *in, int inlen)
6502 struct term_userpass_state *s = (struct term_userpass_state *)p->data;
6505 * First call. Set some stuff up.
6507 p->data = s = snew(struct term_userpass_state);
6510 /* We only print the `name' caption if we have to... */
6511 if (p->name_reqd && p->name) {
6512 size_t l = strlen(p->name);
6513 term_data_untrusted(term, p->name, l);
6514 if (p->name[l-1] != '\n')
6515 term_data_untrusted(term, "\n", 1);
6517 /* ...but we always print any `instruction'. */
6518 if (p->instruction) {
6519 size_t l = strlen(p->instruction);
6520 term_data_untrusted(term, p->instruction, l);
6521 if (p->instruction[l-1] != '\n')
6522 term_data_untrusted(term, "\n", 1);
6525 * Zero all the results, in case we abort half-way through.
6529 for (i = 0; i < (int)p->n_prompts; i++)
6530 memset(p->prompts[i]->result, 0, p->prompts[i]->result_len);
6534 while (s->curr_prompt < p->n_prompts) {
6536 prompt_t *pr = p->prompts[s->curr_prompt];
6537 int finished_prompt = 0;
6539 if (!s->done_prompt) {
6540 term_data_untrusted(term, pr->prompt, strlen(pr->prompt));
6545 /* Breaking out here ensures that the prompt is printed even
6546 * if we're now waiting for user data. */
6547 if (!in || !inlen) break;
6549 /* FIXME: should we be using local-line-editing code instead? */
6550 while (!finished_prompt && inlen) {
6556 term_data(term, 0, "\r\n", 2);
6557 pr->result[s->pos] = '\0';
6558 pr->result[pr->result_len - 1] = '\0';
6559 /* go to next prompt, if any */
6562 finished_prompt = 1; /* break out */
6568 term_data(term, 0, "\b \b", 3);
6574 while (s->pos > 0) {
6576 term_data(term, 0, "\b \b", 3);
6582 /* Immediate abort. */
6583 term_data(term, 0, "\r\n", 2);
6586 return 0; /* user abort */
6589 * This simplistic check for printability is disabled
6590 * when we're doing password input, because some people
6591 * have control characters in their passwords.
6594 (c >= ' ' && c <= '~') ||
6595 ((unsigned char) c >= 160))
6596 && s->pos < pr->result_len - 1) {
6597 pr->result[s->pos++] = c;
6599 term_data(term, 0, &c, 1);
6607 if (s->curr_prompt < p->n_prompts) {
6608 return -1; /* more data required */
6612 return +1; /* all done */