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 const char sco2ansicolour[] = { 0, 4, 2, 6, 1, 5, 3, 7 };
70 #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
71 const wchar_t sel_nl[] = SEL_NL;
74 * Fetch the character at a particular position in a line array,
75 * for purposes of `wordtype'. The reason this isn't just a simple
76 * array reference is that if the character we find is UCSWIDE,
77 * then we must look one space further to the left.
79 #define UCSGET(a, x) \
80 ( (x)>0 && (a)[(x)].chr == UCSWIDE ? (a)[(x)-1].chr : (a)[(x)].chr )
83 * Detect the various aliases of U+0020 SPACE.
85 #define IS_SPACE_CHR(chr) \
86 ((chr) == 0x20 || (DIRECT_CHAR(chr) && ((chr) & 0xFF) == 0x20))
91 #define CSET_OF(chr) (DIRECT_CHAR(chr)||DIRECT_FONT(chr) ? (chr)&CSET_MASK : 0)
94 * Internal prototypes.
96 static void resizeline(Terminal *, termline *, int);
97 static termline *lineptr(Terminal *, int, int, int);
98 static void unlineptr(termline *);
99 static void do_paint(Terminal *, Context, int);
100 static void erase_lots(Terminal *, int, int, int);
101 static int find_last_nonempty_line(Terminal *, tree234 *);
102 static void swap_screen(Terminal *, int, int, int);
103 static void update_sbar(Terminal *);
104 static void deselect(Terminal *);
105 static void term_print_finish(Terminal *);
106 static void scroll(Terminal *, int, int, int, int);
107 #ifdef OPTIMISE_SCROLL
108 static void scroll_display(Terminal *, int, int, int);
109 #endif /* OPTIMISE_SCROLL */
111 static termline *newline(Terminal *term, int cols, int bce)
116 line = snew(termline);
117 line->chars = snewn(cols, termchar);
118 for (j = 0; j < cols; j++)
119 line->chars[j] = (bce ? term->erase_char : term->basic_erase_char);
120 line->cols = line->size = cols;
121 line->lattr = LATTR_NORM;
122 line->temporary = FALSE;
128 static void freeline(termline *line)
136 static void unlineptr(termline *line)
144 * Diagnostic function: verify that a termline has a correct
145 * combining character structure.
147 * This is a performance-intensive check, so it's no longer enabled
150 static void cc_check(termline *line)
152 unsigned char *flags;
155 assert(line->size >= line->cols);
157 flags = snewn(line->size, unsigned char);
159 for (i = 0; i < line->size; i++)
160 flags[i] = (i < line->cols);
162 for (i = 0; i < line->cols; i++) {
164 while (line->chars[j].cc_next) {
165 j += line->chars[j].cc_next;
166 assert(j >= line->cols && j < line->size);
175 assert(j >= line->cols && j < line->size);
178 if (line->chars[j].cc_next)
179 j += line->chars[j].cc_next;
186 for (i = 0; i < line->size; i++)
187 j += (flags[i] != 0);
189 assert(j == line->size);
196 * Add a combining character to a character cell.
198 static void add_cc(termline *line, int col, unsigned long chr)
202 assert(col >= 0 && col < line->cols);
205 * Start by extending the cols array if the free list is empty.
207 if (!line->cc_free) {
209 line->size += 16 + (line->size - line->cols) / 2;
210 line->chars = sresize(line->chars, line->size, termchar);
212 while (n < line->size) {
213 if (n+1 < line->size)
214 line->chars[n].cc_next = 1;
216 line->chars[n].cc_next = 0;
222 * Now walk the cc list of the cell in question.
224 while (line->chars[col].cc_next)
225 col += line->chars[col].cc_next;
228 * `col' now points at the last cc currently in this cell; so
229 * we simply add another one.
231 newcc = line->cc_free;
232 if (line->chars[newcc].cc_next)
233 line->cc_free = newcc + line->chars[newcc].cc_next;
236 line->chars[newcc].cc_next = 0;
237 line->chars[newcc].chr = chr;
238 line->chars[col].cc_next = newcc - col;
246 * Clear the combining character list in a character cell.
248 static void clear_cc(termline *line, int col)
250 int oldfree, origcol = col;
252 assert(col >= 0 && col < line->cols);
254 if (!line->chars[col].cc_next)
255 return; /* nothing needs doing */
257 oldfree = line->cc_free;
258 line->cc_free = col + line->chars[col].cc_next;
259 while (line->chars[col].cc_next)
260 col += line->chars[col].cc_next;
262 line->chars[col].cc_next = oldfree - col;
264 line->chars[col].cc_next = 0;
266 line->chars[origcol].cc_next = 0;
274 * Compare two character cells for equality. Special case required
275 * in do_paint() where we override what we expect the chr and attr
278 static int termchars_equal_override(termchar *a, termchar *b,
279 unsigned long bchr, unsigned long battr)
284 if ((a->attr &~ DATTR_MASK) != (battr &~ DATTR_MASK))
286 while (a->cc_next || b->cc_next) {
287 if (!a->cc_next || !b->cc_next)
288 return FALSE; /* one cc-list ends, other does not */
291 if (a->chr != b->chr)
297 static int termchars_equal(termchar *a, termchar *b)
299 return termchars_equal_override(a, b, b->chr, b->attr);
303 * Copy a character cell. (Requires a pointer to the destination
304 * termline, so as to access its free list.)
306 static void copy_termchar(termline *destline, int x, termchar *src)
308 clear_cc(destline, x);
310 destline->chars[x] = *src; /* copy everything except cc-list */
311 destline->chars[x].cc_next = 0; /* and make sure this is zero */
313 while (src->cc_next) {
315 add_cc(destline, x, src->chr);
324 * Move a character cell within its termline.
326 static void move_termchar(termline *line, termchar *dest, termchar *src)
328 /* First clear the cc list from the original char, just in case. */
329 clear_cc(line, dest - line->chars);
331 /* Move the character cell and adjust its cc_next. */
332 *dest = *src; /* copy everything except cc-list */
334 dest->cc_next = src->cc_next - (dest-src);
336 /* Ensure the original cell doesn't have a cc list. */
345 * Compress and decompress a termline into an RLE-based format for
346 * storing in scrollback. (Since scrollback almost never needs to
347 * be modified and exists in huge quantities, this is a sensible
348 * tradeoff, particularly since it allows us to continue adding
349 * features to the main termchar structure without proportionally
350 * bloating the terminal emulator's memory footprint unless those
351 * features are in constant use.)
357 static void add(struct buf *b, unsigned char c)
359 if (b->len >= b->size) {
360 b->size = (b->len * 3 / 2) + 512;
361 b->data = sresize(b->data, b->size, unsigned char);
363 b->data[b->len++] = c;
365 static int get(struct buf *b)
367 return b->data[b->len++];
369 static void makerle(struct buf *b, termline *ldata,
370 void (*makeliteral)(struct buf *b, termchar *c,
371 unsigned long *state))
373 int hdrpos, hdrsize, n, prevlen, prevpos, thislen, thispos, prev2;
374 termchar *c = ldata->chars;
375 unsigned long state = 0, oldstate;
382 prevlen = prevpos = 0;
387 makeliteral(b, c++, &state);
388 thislen = b->len - thispos;
389 if (thislen == prevlen &&
390 !memcmp(b->data + prevpos, b->data + thispos, thislen)) {
392 * This literal precisely matches the previous one.
393 * Turn it into a run if it's worthwhile.
395 * With one-byte literals, it costs us two bytes to
396 * encode a run, plus another byte to write the header
397 * to resume normal output; so a three-element run is
398 * neutral, and anything beyond that is unconditionally
399 * worthwhile. With two-byte literals or more, even a
402 if (thislen > 1 || prev2) {
406 * It's worth encoding a run. Start at prevpos,
407 * unless hdrsize==0 in which case we can back up
408 * another one and start by overwriting hdrpos.
411 hdrsize--; /* remove the literal at prevpos */
415 prevpos -= prevlen;/* and possibly another one */
419 assert(prevpos == hdrpos + 1);
421 b->len = prevpos+prevlen;
423 memmove(b->data + prevpos+1, b->data + prevpos, prevlen);
425 b->len = prevpos+prevlen+1;
427 * Terminate the previous run of ordinary
430 assert(hdrsize >= 1 && hdrsize <= 128);
431 b->data[hdrpos] = hdrsize - 1;
434 runlen = prev2 ? 3 : 2;
436 while (n > 0 && runlen < 129) {
440 makeliteral(b, c, &state);
441 tmplen = b->len - tmppos;
443 if (tmplen != thislen ||
444 memcmp(b->data + runpos+1, b->data + tmppos, tmplen)) {
446 break; /* run over */
451 assert(runlen >= 2 && runlen <= 129);
452 b->data[runpos] = runlen + 0x80 - 2;
457 /* And ensure this run doesn't interfere with the next. */
458 prevlen = prevpos = 0;
464 * Just flag that the previous two literals were
465 * identical, in case we find a third identical one
466 * we want to turn into a run.
479 * This character isn't (yet) part of a run. Add it to
483 if (hdrsize == 128) {
484 b->data[hdrpos] = hdrsize - 1;
488 prevlen = prevpos = 0;
497 assert(hdrsize <= 128);
498 b->data[hdrpos] = hdrsize - 1;
503 static void makeliteral_chr(struct buf *b, termchar *c, unsigned long *state)
506 * My encoding for characters is UTF-8-like, in that it stores
507 * 7-bit ASCII in one byte and uses high-bit-set bytes as
508 * introducers to indicate a longer sequence. However, it's
509 * unlike UTF-8 in that it doesn't need to be able to
510 * resynchronise, and therefore I don't want to waste two bits
511 * per byte on having recognisable continuation characters.
512 * Also I don't want to rule out the possibility that I may one
513 * day use values 0x80000000-0xFFFFFFFF for interesting
514 * purposes, so unlike UTF-8 I need a full 32-bit range.
515 * Accordingly, here is my encoding:
517 * 00000000-0000007F: 0xxxxxxx (but see below)
518 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
519 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
520 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
521 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
523 * (`Z' is like `x' but is always going to be zero since the
524 * values I'm encoding don't go above 2^32. In principle the
525 * five-byte form of the encoding could extend to 2^35, and
526 * there could be six-, seven-, eight- and nine-byte forms as
527 * well to allow up to 64-bit values to be encoded. But that's
528 * completely unnecessary for these purposes!)
530 * The encoding as written above would be very simple, except
531 * that 7-bit ASCII can occur in several different ways in the
532 * terminal data; sometimes it crops up in the D800 page
533 * (CSET_ASCII) but at other times it's in the 0000 page (real
534 * Unicode). Therefore, this encoding is actually _stateful_:
535 * the one-byte encoding of 00-7F actually indicates `reuse the
536 * upper three bytes of the last character', and to encode an
537 * absolute value of 00-7F you need to use the two-byte form
540 if ((c->chr & ~0x7F) == *state) {
541 add(b, (unsigned char)(c->chr & 0x7F));
542 } else if (c->chr < 0x4000) {
543 add(b, (unsigned char)(((c->chr >> 8) & 0x3F) | 0x80));
544 add(b, (unsigned char)(c->chr & 0xFF));
545 } else if (c->chr < 0x200000) {
546 add(b, (unsigned char)(((c->chr >> 16) & 0x1F) | 0xC0));
547 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
548 add(b, (unsigned char)(c->chr & 0xFF));
549 } else if (c->chr < 0x10000000) {
550 add(b, (unsigned char)(((c->chr >> 24) & 0x0F) | 0xE0));
551 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
552 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
553 add(b, (unsigned char)(c->chr & 0xFF));
556 add(b, (unsigned char)((c->chr >> 24) & 0xFF));
557 add(b, (unsigned char)((c->chr >> 16) & 0xFF));
558 add(b, (unsigned char)((c->chr >> 8) & 0xFF));
559 add(b, (unsigned char)(c->chr & 0xFF));
561 *state = c->chr & ~0xFF;
563 static void makeliteral_attr(struct buf *b, termchar *c, unsigned long *state)
566 * My encoding for attributes is 16-bit-granular and assumes
567 * that the top bit of the word is never required. I either
568 * store a two-byte value with the top bit clear (indicating
569 * just that value), or a four-byte value with the top bit set
570 * (indicating the same value with its top bit clear).
572 * However, first I permute the bits of the attribute value, so
573 * that the eight bits of colour (four in each of fg and bg)
574 * which are never non-zero unless xterm 256-colour mode is in
575 * use are placed higher up the word than everything else. This
576 * ensures that attribute values remain 16-bit _unless_ the
577 * user uses extended colour.
579 unsigned attr, colourbits;
583 assert(ATTR_BGSHIFT > ATTR_FGSHIFT);
585 colourbits = (attr >> (ATTR_BGSHIFT + 4)) & 0xF;
587 colourbits |= (attr >> (ATTR_FGSHIFT + 4)) & 0xF;
589 attr = (((attr >> (ATTR_BGSHIFT + 8)) << (ATTR_BGSHIFT + 4)) |
590 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
591 attr = (((attr >> (ATTR_FGSHIFT + 8)) << (ATTR_FGSHIFT + 4)) |
592 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
594 attr |= (colourbits << (32-9));
597 add(b, (unsigned char)((attr >> 8) & 0xFF));
598 add(b, (unsigned char)(attr & 0xFF));
600 add(b, (unsigned char)(((attr >> 24) & 0x7F) | 0x80));
601 add(b, (unsigned char)((attr >> 16) & 0xFF));
602 add(b, (unsigned char)((attr >> 8) & 0xFF));
603 add(b, (unsigned char)(attr & 0xFF));
606 static void makeliteral_cc(struct buf *b, termchar *c, unsigned long *state)
609 * For combining characters, I just encode a bunch of ordinary
610 * chars using makeliteral_chr, and terminate with a \0
611 * character (which I know won't come up as a combining char
614 * I don't use the stateful encoding in makeliteral_chr.
616 unsigned long zstate;
625 makeliteral_chr(b, c, &zstate);
630 makeliteral_chr(b, &z, &zstate);
633 static termline *decompressline(unsigned char *data, int *bytes_used);
635 static unsigned char *compressline(termline *ldata)
637 struct buf buffer = { NULL, 0, 0 }, *b = &buffer;
640 * First, store the column count, 7 bits at a time, least
641 * significant `digit' first, with the high bit set on all but
647 add(b, (unsigned char)((n & 0x7F) | 0x80));
650 add(b, (unsigned char)(n));
654 * Next store the lattrs; same principle.
657 int n = ldata->lattr;
659 add(b, (unsigned char)((n & 0x7F) | 0x80));
662 add(b, (unsigned char)(n));
666 * Now we store a sequence of separate run-length encoded
667 * fragments, each containing exactly as many symbols as there
668 * are columns in the ldata.
670 * All of these have a common basic format:
672 * - a byte 00-7F indicates that X+1 literals follow it
673 * - a byte 80-FF indicates that a single literal follows it
674 * and expects to be repeated (X-0x80)+2 times.
676 * The format of the `literals' varies between the fragments.
678 makerle(b, ldata, makeliteral_chr);
679 makerle(b, ldata, makeliteral_attr);
680 makerle(b, ldata, makeliteral_cc);
683 * Diagnostics: ensure that the compressed data really does
684 * decompress to the right thing.
686 * This is a bit performance-heavy for production code.
689 #ifndef CHECK_SB_COMPRESSION
695 #ifdef DIAGNOSTIC_SB_COMPRESSION
696 for (i = 0; i < b->len; i++) {
697 printf(" %02x ", b->data[i]);
702 dcl = decompressline(b->data, &dused);
703 assert(b->len == dused);
704 assert(ldata->cols == dcl->cols);
705 assert(ldata->lattr == dcl->lattr);
706 for (i = 0; i < ldata->cols; i++)
707 assert(termchars_equal(&ldata->chars[i], &dcl->chars[i]));
709 #ifdef DIAGNOSTIC_SB_COMPRESSION
710 printf("%d cols (%d bytes) -> %d bytes (factor of %g)\n",
711 ldata->cols, 4 * ldata->cols, dused,
712 (double)dused / (4 * ldata->cols));
718 #endif /* TERM_CC_DIAGS */
721 * Trim the allocated memory so we don't waste any, and return.
723 return sresize(b->data, b->len, unsigned char);
726 static void readrle(struct buf *b, termline *ldata,
727 void (*readliteral)(struct buf *b, termchar *c,
728 termline *ldata, unsigned long *state))
731 unsigned long state = 0;
733 while (n < ldata->cols) {
739 int pos = b->len, count = hdr + 2 - 0x80;
741 assert(n < ldata->cols);
743 readliteral(b, ldata->chars + n, ldata, &state);
747 /* Just a sequence of consecutive literals. */
751 assert(n < ldata->cols);
752 readliteral(b, ldata->chars + n, ldata, &state);
758 assert(n == ldata->cols);
760 static void readliteral_chr(struct buf *b, termchar *c, termline *ldata,
761 unsigned long *state)
766 * 00000000-0000007F: 0xxxxxxx
767 * 00000080-00003FFF: 10xxxxxx xxxxxxxx
768 * 00004000-001FFFFF: 110xxxxx xxxxxxxx xxxxxxxx
769 * 00200000-0FFFFFFF: 1110xxxx xxxxxxxx xxxxxxxx xxxxxxxx
770 * 10000000-FFFFFFFF: 11110ZZZ xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx
775 c->chr = byte | *state;
776 } else if (byte < 0xC0) {
777 c->chr = (byte &~ 0xC0) << 8;
779 } else if (byte < 0xE0) {
780 c->chr = (byte &~ 0xE0) << 16;
781 c->chr |= get(b) << 8;
783 } else if (byte < 0xF0) {
784 c->chr = (byte &~ 0xF0) << 24;
785 c->chr |= get(b) << 16;
786 c->chr |= get(b) << 8;
789 assert(byte == 0xF0);
790 c->chr = get(b) << 24;
791 c->chr |= get(b) << 16;
792 c->chr |= get(b) << 8;
795 *state = c->chr & ~0xFF;
797 static void readliteral_attr(struct buf *b, termchar *c, termline *ldata,
798 unsigned long *state)
800 unsigned val, attr, colourbits;
812 colourbits = (val >> (32-9)) & 0xFF;
813 attr = (val & ((1<<(32-9))-1));
815 attr = (((attr >> (ATTR_FGSHIFT + 4)) << (ATTR_FGSHIFT + 8)) |
816 (attr & ((1 << (ATTR_FGSHIFT + 4))-1)));
817 attr = (((attr >> (ATTR_BGSHIFT + 4)) << (ATTR_BGSHIFT + 8)) |
818 (attr & ((1 << (ATTR_BGSHIFT + 4))-1)));
820 attr |= (colourbits >> 4) << (ATTR_BGSHIFT + 4);
821 attr |= (colourbits & 0xF) << (ATTR_FGSHIFT + 4);
825 static void readliteral_cc(struct buf *b, termchar *c, termline *ldata,
826 unsigned long *state)
829 unsigned long zstate;
830 int x = c - ldata->chars;
836 readliteral_chr(b, &n, ldata, &zstate);
839 add_cc(ldata, x, n.chr);
843 static termline *decompressline(unsigned char *data, int *bytes_used)
845 int ncols, byte, shift;
846 struct buf buffer, *b = &buffer;
853 * First read in the column count.
858 ncols |= (byte & 0x7F) << shift;
860 } while (byte & 0x80);
863 * Now create the output termline.
865 ldata = snew(termline);
866 ldata->chars = snewn(ncols, termchar);
867 ldata->cols = ldata->size = ncols;
868 ldata->temporary = TRUE;
872 * We must set all the cc pointers in ldata->chars to 0 right
873 * now, so that cc diagnostics that verify the integrity of the
874 * whole line will make sense while we're in the middle of
879 for (i = 0; i < ldata->cols; i++)
880 ldata->chars[i].cc_next = 0;
884 * Now read in the lattr.
886 ldata->lattr = shift = 0;
889 ldata->lattr |= (byte & 0x7F) << shift;
891 } while (byte & 0x80);
894 * Now we read in each of the RLE streams in turn.
896 readrle(b, ldata, readliteral_chr);
897 readrle(b, ldata, readliteral_attr);
898 readrle(b, ldata, readliteral_cc);
900 /* Return the number of bytes read, for diagnostic purposes. */
902 *bytes_used = b->len;
908 * Resize a line to make it `cols' columns wide.
910 static void resizeline(Terminal *term, termline *line, int cols)
914 if (line->cols != cols) {
916 oldcols = line->cols;
919 * This line is the wrong length, which probably means it
920 * hasn't been accessed since a resize. Resize it now.
922 * First, go through all the characters that will be thrown
923 * out in the resize (if we're shrinking the line) and
924 * return their cc lists to the cc free list.
926 for (i = cols; i < oldcols; i++)
930 * If we're shrinking the line, we now bodily move the
931 * entire cc section from where it started to where it now
932 * needs to be. (We have to do this before the resize, so
933 * that the data we're copying is still there. However, if
934 * we're expanding, we have to wait until _after_ the
935 * resize so that the space we're copying into is there.)
938 memmove(line->chars + cols, line->chars + oldcols,
939 (line->size - line->cols) * TSIZE);
942 * Now do the actual resize, leaving the _same_ amount of
943 * cc space as there was to begin with.
945 line->size += cols - oldcols;
946 line->chars = sresize(line->chars, line->size, TTYPE);
950 * If we're expanding the line, _now_ we move the cc
954 memmove(line->chars + cols, line->chars + oldcols,
955 (line->size - line->cols) * TSIZE);
958 * Go through what's left of the original line, and adjust
959 * the first cc_next pointer in each list. (All the
960 * subsequent ones are still valid because they are
961 * relative offsets within the cc block.) Also do the same
962 * to the head of the cc_free list.
964 for (i = 0; i < oldcols && i < cols; i++)
965 if (line->chars[i].cc_next)
966 line->chars[i].cc_next += cols - oldcols;
968 line->cc_free += cols - oldcols;
971 * And finally fill in the new space with erase chars. (We
972 * don't have to worry about cc lists here, because we
973 * _know_ the erase char doesn't have one.)
975 for (i = oldcols; i < cols; i++)
976 line->chars[i] = term->basic_erase_char;
985 * Get the number of lines in the scrollback.
987 static int sblines(Terminal *term)
989 int sblines = count234(term->scrollback);
990 if (term->cfg.erase_to_scrollback &&
991 term->alt_which && term->alt_screen) {
992 sblines += term->alt_sblines;
998 * Retrieve a line of the screen or of the scrollback, according to
999 * whether the y coordinate is non-negative or negative
1002 static termline *lineptr(Terminal *term, int y, int lineno, int screen)
1009 whichtree = term->screen;
1016 if (term->cfg.erase_to_scrollback &&
1017 term->alt_which && term->alt_screen) {
1018 altlines = term->alt_sblines;
1020 if (y < -altlines) {
1021 whichtree = term->scrollback;
1022 treeindex = y + altlines + count234(term->scrollback);
1024 whichtree = term->alt_screen;
1025 treeindex = y + term->alt_sblines;
1026 /* treeindex = y + count234(term->alt_screen); */
1029 if (whichtree == term->scrollback) {
1030 unsigned char *cline = index234(whichtree, treeindex);
1031 line = decompressline(cline, NULL);
1033 line = index234(whichtree, treeindex);
1036 /* We assume that we don't screw up and retrieve something out of range. */
1038 fatalbox("line==NULL in terminal.c\n"
1039 "lineno=%d y=%d w=%d h=%d\n"
1040 "count(scrollback=%p)=%d\n"
1041 "count(screen=%p)=%d\n"
1042 "count(alt=%p)=%d alt_sblines=%d\n"
1043 "whichtree=%p treeindex=%d\n\n"
1044 "Please contact <putty@projects.tartarus.org> "
1045 "and pass on the above information.",
1046 lineno, y, term->cols, term->rows,
1047 term->scrollback, count234(term->scrollback),
1048 term->screen, count234(term->screen),
1049 term->alt_screen, count234(term->alt_screen), term->alt_sblines,
1050 whichtree, treeindex);
1052 assert(line != NULL);
1054 resizeline(term, line, term->cols);
1055 /* FIXME: should we sort the compressed scrollback out here? */
1060 #define lineptr(x) (lineptr)(term,x,__LINE__,FALSE)
1061 #define scrlineptr(x) (lineptr)(term,x,__LINE__,TRUE)
1063 static void term_schedule_tblink(Terminal *term);
1064 static void term_schedule_cblink(Terminal *term);
1066 static void term_timer(void *ctx, long now)
1068 Terminal *term = (Terminal *)ctx;
1071 if (term->tblink_pending && now - term->next_tblink >= 0) {
1072 term->tblinker = !term->tblinker;
1073 term->tblink_pending = FALSE;
1074 term_schedule_tblink(term);
1078 if (term->cblink_pending && now - term->next_cblink >= 0) {
1079 term->cblinker = !term->cblinker;
1080 term->cblink_pending = FALSE;
1081 term_schedule_cblink(term);
1085 if (term->in_vbell && now - term->vbell_end >= 0) {
1086 term->in_vbell = FALSE;
1091 (term->window_update_pending && now - term->next_update >= 0))
1095 static void term_schedule_update(Terminal *term)
1097 if (!term->window_update_pending) {
1098 term->window_update_pending = TRUE;
1099 term->next_update = schedule_timer(UPDATE_DELAY, term_timer, term);
1104 * Call this whenever the terminal window state changes, to queue
1107 static void seen_disp_event(Terminal *term)
1109 term->seen_disp_event = TRUE; /* for scrollback-reset-on-activity */
1110 term_schedule_update(term);
1114 * Call when the terminal's blinking-text settings change, or when
1115 * a text blink has just occurred.
1117 static void term_schedule_tblink(Terminal *term)
1119 if (term->blink_is_real) {
1120 if (!term->tblink_pending)
1121 term->next_tblink = schedule_timer(TBLINK_DELAY, term_timer, term);
1122 term->tblink_pending = TRUE;
1124 term->tblinker = 1; /* reset when not in use */
1125 term->tblink_pending = FALSE;
1130 * Likewise with cursor blinks.
1132 static void term_schedule_cblink(Terminal *term)
1134 if (term->cfg.blink_cur && term->has_focus) {
1135 if (!term->cblink_pending)
1136 term->next_cblink = schedule_timer(CBLINK_DELAY, term_timer, term);
1137 term->cblink_pending = TRUE;
1139 term->cblinker = 1; /* reset when not in use */
1140 term->cblink_pending = FALSE;
1145 * Call to reset cursor blinking on new output.
1147 static void term_reset_cblink(Terminal *term)
1149 seen_disp_event(term);
1151 term->cblink_pending = FALSE;
1152 term_schedule_cblink(term);
1156 * Call to begin a visual bell.
1158 static void term_schedule_vbell(Terminal *term, int already_started,
1161 long ticks_already_gone;
1163 if (already_started)
1164 ticks_already_gone = GETTICKCOUNT() - startpoint;
1166 ticks_already_gone = 0;
1168 if (ticks_already_gone < VBELL_DELAY) {
1169 term->in_vbell = TRUE;
1170 term->vbell_end = schedule_timer(VBELL_DELAY - ticks_already_gone,
1173 term->in_vbell = FALSE;
1178 * Set up power-on settings for the terminal.
1179 * If 'clear' is false, don't actually clear the primary screen, and
1180 * position the cursor below the last non-blank line (scrolling if
1183 static void power_on(Terminal *term, int clear)
1185 term->alt_x = term->alt_y = 0;
1186 term->savecurs.x = term->savecurs.y = 0;
1187 term->alt_t = term->marg_t = 0;
1188 if (term->rows != -1)
1189 term->alt_b = term->marg_b = term->rows - 1;
1191 term->alt_b = term->marg_b = 0;
1192 if (term->cols != -1) {
1194 for (i = 0; i < term->cols; i++)
1195 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1197 term->alt_om = term->dec_om = term->cfg.dec_om;
1198 term->alt_ins = term->insert = FALSE;
1199 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
1200 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1201 term->alt_cset = term->cset = term->save_cset = 0;
1202 term->alt_utf = term->utf = term->save_utf = 0;
1203 term->utf_state = 0;
1204 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
1205 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = CSET_ASCII;
1207 term->in_vbell = FALSE;
1208 term->cursor_on = 1;
1209 term->big_cursor = 0;
1210 term->default_attr = term->save_attr = term->curr_attr = ATTR_DEFAULT;
1211 term->term_editing = term->term_echoing = FALSE;
1212 term->app_cursor_keys = term->cfg.app_cursor;
1213 term->app_keypad_keys = term->cfg.app_keypad;
1214 term->use_bce = term->cfg.bce;
1215 term->blink_is_real = term->cfg.blinktext;
1216 term->erase_char = term->basic_erase_char;
1217 term->alt_which = 0;
1218 term_print_finish(term);
1221 for (i = 0; i < 256; i++)
1222 term->wordness[i] = term->cfg.wordness[i];
1225 swap_screen(term, 1, FALSE, FALSE);
1226 erase_lots(term, FALSE, TRUE, TRUE);
1227 swap_screen(term, 0, FALSE, FALSE);
1229 erase_lots(term, FALSE, TRUE, TRUE);
1230 term->curs.y = find_last_nonempty_line(term, term->screen) + 1;
1231 if (term->curs.y == term->rows) {
1233 scroll(term, 0, term->rows - 1, 1, TRUE);
1239 term_schedule_tblink(term);
1240 term_schedule_cblink(term);
1244 * Force a screen update.
1246 void term_update(Terminal *term)
1250 term->window_update_pending = FALSE;
1252 ctx = get_ctx(term->frontend);
1254 int need_sbar_update = term->seen_disp_event;
1255 if (term->seen_disp_event && term->cfg.scroll_on_disp) {
1256 term->disptop = 0; /* return to main screen */
1257 term->seen_disp_event = 0;
1258 need_sbar_update = TRUE;
1261 if (need_sbar_update)
1263 do_paint(term, ctx, TRUE);
1264 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
1270 * Called from front end when a keypress occurs, to trigger
1271 * anything magical that needs to happen in that situation.
1273 void term_seen_key_event(Terminal *term)
1276 * On any keypress, clear the bell overload mechanism
1277 * completely, on the grounds that large numbers of
1278 * beeps coming from deliberate key action are likely
1279 * to be intended (e.g. beeps from filename completion
1280 * blocking repeatedly).
1282 term->beep_overloaded = FALSE;
1283 while (term->beephead) {
1284 struct beeptime *tmp = term->beephead;
1285 term->beephead = tmp->next;
1288 term->beeptail = NULL;
1292 * Reset the scrollback on keypress, if we're doing that.
1294 if (term->cfg.scroll_on_key) {
1295 term->disptop = 0; /* return to main screen */
1296 seen_disp_event(term);
1301 * Same as power_on(), but an external function.
1303 void term_pwron(Terminal *term, int clear)
1305 power_on(term, clear);
1306 if (term->ldisc) /* cause ldisc to notice changes */
1307 ldisc_send(term->ldisc, NULL, 0, 0);
1313 static void set_erase_char(Terminal *term)
1315 term->erase_char = term->basic_erase_char;
1317 term->erase_char.attr = (term->curr_attr &
1318 (ATTR_FGMASK | ATTR_BGMASK));
1322 * When the user reconfigures us, we need to check the forbidden-
1323 * alternate-screen config option, disable raw mouse mode if the
1324 * user has disabled mouse reporting, and abandon a print job if
1325 * the user has disabled printing.
1327 void term_reconfig(Terminal *term, Config *cfg)
1330 * Before adopting the new config, check all those terminal
1331 * settings which control power-on defaults; and if they've
1332 * changed, we will modify the current state as well as the
1333 * default one. The full list is: Auto wrap mode, DEC Origin
1334 * Mode, BCE, blinking text, character classes.
1336 int reset_wrap, reset_decom, reset_bce, reset_tblink, reset_charclass;
1339 reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode);
1340 reset_decom = (term->cfg.dec_om != cfg->dec_om);
1341 reset_bce = (term->cfg.bce != cfg->bce);
1342 reset_tblink = (term->cfg.blinktext != cfg->blinktext);
1343 reset_charclass = 0;
1344 for (i = 0; i < lenof(term->cfg.wordness); i++)
1345 if (term->cfg.wordness[i] != cfg->wordness[i])
1346 reset_charclass = 1;
1349 * If the bidi or shaping settings have changed, flush the bidi
1352 if (term->cfg.arabicshaping != cfg->arabicshaping ||
1353 term->cfg.bidi != cfg->bidi) {
1354 for (i = 0; i < term->bidi_cache_size; i++) {
1355 sfree(term->pre_bidi_cache[i].chars);
1356 sfree(term->post_bidi_cache[i].chars);
1357 term->pre_bidi_cache[i].width = -1;
1358 term->pre_bidi_cache[i].chars = NULL;
1359 term->post_bidi_cache[i].width = -1;
1360 term->post_bidi_cache[i].chars = NULL;
1364 term->cfg = *cfg; /* STRUCTURE COPY */
1367 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1369 term->alt_om = term->dec_om = term->cfg.dec_om;
1371 term->use_bce = term->cfg.bce;
1372 set_erase_char(term);
1375 term->blink_is_real = term->cfg.blinktext;
1377 if (reset_charclass)
1378 for (i = 0; i < 256; i++)
1379 term->wordness[i] = term->cfg.wordness[i];
1381 if (term->cfg.no_alt_screen)
1382 swap_screen(term, 0, FALSE, FALSE);
1383 if (term->cfg.no_mouse_rep) {
1384 term->xterm_mouse = 0;
1385 set_raw_mouse_mode(term->frontend, 0);
1387 if (term->cfg.no_remote_charset) {
1388 term->cset_attr[0] = term->cset_attr[1] = CSET_ASCII;
1389 term->sco_acs = term->alt_sco_acs = 0;
1392 if (!*term->cfg.printer) {
1393 term_print_finish(term);
1395 term_schedule_tblink(term);
1396 term_schedule_cblink(term);
1400 * Clear the scrollback.
1402 void term_clrsb(Terminal *term)
1404 unsigned char *line;
1406 while ((line = delpos234(term->scrollback, 0)) != NULL) {
1407 sfree(line); /* this is compressed data, not a termline */
1409 term->tempsblines = 0;
1410 term->alt_sblines = 0;
1415 * Initialise the terminal.
1417 Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
1423 * Allocate a new Terminal structure and initialise the fields
1426 term = snew(Terminal);
1427 term->frontend = frontend;
1428 term->ucsdata = ucsdata;
1429 term->cfg = *mycfg; /* STRUCTURE COPY */
1430 term->logctx = NULL;
1431 term->compatibility_level = TM_PUTTY;
1432 strcpy(term->id_string, "\033[?6c");
1433 term->cblink_pending = term->tblink_pending = FALSE;
1434 term->paste_buffer = NULL;
1435 term->paste_len = 0;
1436 term->last_paste = 0;
1437 bufchain_init(&term->inbuf);
1438 bufchain_init(&term->printer_buf);
1439 term->printing = term->only_printing = FALSE;
1440 term->print_job = NULL;
1441 term->vt52_mode = FALSE;
1442 term->cr_lf_return = FALSE;
1443 term->seen_disp_event = FALSE;
1444 term->xterm_mouse = term->mouse_is_down = FALSE;
1445 term->reset_132 = FALSE;
1446 term->cblinker = term->tblinker = 0;
1447 term->has_focus = 1;
1448 term->repeat_off = FALSE;
1449 term->termstate = TOPLEVEL;
1450 term->selstate = NO_SELECTION;
1453 term->screen = term->alt_screen = term->scrollback = NULL;
1454 term->tempsblines = 0;
1455 term->alt_sblines = 0;
1457 term->disptext = NULL;
1458 term->dispcursx = term->dispcursy = -1;
1461 term->rows = term->cols = -1;
1462 power_on(term, TRUE);
1463 term->beephead = term->beeptail = NULL;
1464 #ifdef OPTIMISE_SCROLL
1465 term->scrollhead = term->scrolltail = NULL;
1466 #endif /* OPTIMISE_SCROLL */
1468 term->lastbeep = FALSE;
1469 term->beep_overloaded = FALSE;
1470 term->attr_mask = 0xffffffff;
1471 term->resize_fn = NULL;
1472 term->resize_ctx = NULL;
1473 term->in_term_out = FALSE;
1475 term->ltemp_size = 0;
1476 term->wcFrom = NULL;
1478 term->wcFromTo_size = 0;
1480 term->window_update_pending = FALSE;
1482 term->bidi_cache_size = 0;
1483 term->pre_bidi_cache = term->post_bidi_cache = NULL;
1486 term->basic_erase_char.chr = CSET_ASCII | ' ';
1487 term->basic_erase_char.attr = ATTR_DEFAULT;
1488 term->basic_erase_char.cc_next = 0;
1489 term->erase_char = term->basic_erase_char;
1494 void term_free(Terminal *term)
1497 struct beeptime *beep;
1500 while ((line = delpos234(term->scrollback, 0)) != NULL)
1501 sfree(line); /* compressed data, not a termline */
1502 freetree234(term->scrollback);
1503 while ((line = delpos234(term->screen, 0)) != NULL)
1505 freetree234(term->screen);
1506 while ((line = delpos234(term->alt_screen, 0)) != NULL)
1508 freetree234(term->alt_screen);
1509 if (term->disptext) {
1510 for (i = 0; i < term->rows; i++)
1511 freeline(term->disptext[i]);
1513 sfree(term->disptext);
1514 while (term->beephead) {
1515 beep = term->beephead;
1516 term->beephead = beep->next;
1519 bufchain_clear(&term->inbuf);
1521 printer_finish_job(term->print_job);
1522 bufchain_clear(&term->printer_buf);
1523 sfree(term->paste_buffer);
1525 sfree(term->wcFrom);
1528 for (i = 0; i < term->bidi_cache_size; i++) {
1529 sfree(term->pre_bidi_cache[i].chars);
1530 sfree(term->post_bidi_cache[i].chars);
1532 sfree(term->pre_bidi_cache);
1533 sfree(term->post_bidi_cache);
1535 expire_timer_context(term);
1541 * Set up the terminal for a given size.
1543 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
1546 termline **newdisp, *line;
1547 int i, j, oldrows = term->rows;
1549 int save_alt_which = term->alt_which;
1551 if (newrows == term->rows && newcols == term->cols &&
1552 newsavelines == term->savelines)
1553 return; /* nothing to do */
1555 /* Behave sensibly if we're given zero (or negative) rows/cols */
1557 if (newrows < 1) newrows = 1;
1558 if (newcols < 1) newcols = 1;
1561 swap_screen(term, 0, FALSE, FALSE);
1563 term->alt_t = term->marg_t = 0;
1564 term->alt_b = term->marg_b = newrows - 1;
1566 if (term->rows == -1) {
1567 term->scrollback = newtree234(NULL);
1568 term->screen = newtree234(NULL);
1569 term->tempsblines = 0;
1574 * Resize the screen and scrollback. We only need to shift
1575 * lines around within our data structures, because lineptr()
1576 * will take care of resizing each individual line if
1579 * - If the new screen is longer, we shunt lines in from temporary
1580 * scrollback if possible, otherwise we add new blank lines at
1583 * - If the new screen is shorter, we remove any blank lines at
1584 * the bottom if possible, otherwise shunt lines above the cursor
1585 * to scrollback if possible, otherwise delete lines below the
1588 * - Then, if the new scrollback length is less than the
1589 * amount of scrollback we actually have, we must throw some
1592 sblen = count234(term->scrollback);
1593 /* Do this loop to expand the screen if newrows > rows */
1594 assert(term->rows == count234(term->screen));
1595 while (term->rows < newrows) {
1596 if (term->tempsblines > 0) {
1597 unsigned char *cline;
1598 /* Insert a line from the scrollback at the top of the screen. */
1599 assert(sblen >= term->tempsblines);
1600 cline = delpos234(term->scrollback, --sblen);
1601 line = decompressline(cline, NULL);
1603 line->temporary = FALSE; /* reconstituted line is now real */
1604 term->tempsblines -= 1;
1605 addpos234(term->screen, line, 0);
1607 term->savecurs.y += 1;
1609 /* Add a new blank line at the bottom of the screen. */
1610 line = newline(term, newcols, FALSE);
1611 addpos234(term->screen, line, count234(term->screen));
1615 /* Do this loop to shrink the screen if newrows < rows */
1616 while (term->rows > newrows) {
1617 if (term->curs.y < term->rows - 1) {
1618 /* delete bottom row, unless it contains the cursor */
1619 sfree(delpos234(term->screen, term->rows - 1));
1621 /* push top row to scrollback */
1622 line = delpos234(term->screen, 0);
1623 addpos234(term->scrollback, compressline(line), sblen++);
1625 term->tempsblines += 1;
1627 term->savecurs.y -= 1;
1631 assert(term->rows == newrows);
1632 assert(count234(term->screen) == newrows);
1634 /* Delete any excess lines from the scrollback. */
1635 while (sblen > newsavelines) {
1636 line = delpos234(term->scrollback, 0);
1640 if (sblen < term->tempsblines)
1641 term->tempsblines = sblen;
1642 assert(count234(term->scrollback) <= newsavelines);
1643 assert(count234(term->scrollback) >= term->tempsblines);
1646 /* Make a new displayed text buffer. */
1647 newdisp = snewn(newrows, termline *);
1648 for (i = 0; i < newrows; i++) {
1649 newdisp[i] = newline(term, newcols, FALSE);
1650 for (j = 0; j < newcols; j++)
1651 newdisp[i]->chars[j].attr = ATTR_INVALID;
1653 if (term->disptext) {
1654 for (i = 0; i < oldrows; i++)
1655 freeline(term->disptext[i]);
1657 sfree(term->disptext);
1658 term->disptext = newdisp;
1659 term->dispcursx = term->dispcursy = -1;
1661 /* Make a new alternate screen. */
1662 newalt = newtree234(NULL);
1663 for (i = 0; i < newrows; i++) {
1664 line = newline(term, newcols, TRUE);
1665 addpos234(newalt, line, i);
1667 if (term->alt_screen) {
1668 while (NULL != (line = delpos234(term->alt_screen, 0)))
1670 freetree234(term->alt_screen);
1672 term->alt_screen = newalt;
1673 term->alt_sblines = 0;
1675 term->tabs = sresize(term->tabs, newcols, unsigned char);
1678 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
1679 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1682 /* Check that the cursor positions are still valid. */
1683 if (term->savecurs.y < 0)
1684 term->savecurs.y = 0;
1685 if (term->savecurs.y >= newrows)
1686 term->savecurs.y = newrows - 1;
1687 if (term->curs.y < 0)
1689 if (term->curs.y >= newrows)
1690 term->curs.y = newrows - 1;
1691 if (term->curs.x >= newcols)
1692 term->curs.x = newcols - 1;
1693 term->alt_x = term->alt_y = 0;
1694 term->wrapnext = term->alt_wnext = FALSE;
1696 term->rows = newrows;
1697 term->cols = newcols;
1698 term->savelines = newsavelines;
1700 swap_screen(term, save_alt_which, FALSE, FALSE);
1704 if (term->resize_fn)
1705 term->resize_fn(term->resize_ctx, term->cols, term->rows);
1709 * Hand a function and context pointer to the terminal which it can
1710 * use to notify a back end of resizes.
1712 void term_provide_resize_fn(Terminal *term,
1713 void (*resize_fn)(void *, int, int),
1716 term->resize_fn = resize_fn;
1717 term->resize_ctx = resize_ctx;
1718 if (term->cols > 0 && term->rows > 0)
1719 resize_fn(resize_ctx, term->cols, term->rows);
1722 /* Find the bottom line on the screen that has any content.
1723 * If only the top line has content, returns 0.
1724 * If no lines have content, return -1.
1726 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
1729 for (i = count234(screen) - 1; i >= 0; i--) {
1730 termline *line = index234(screen, i);
1732 for (j = 0; j < line->cols; j++)
1733 if (!termchars_equal(&line->chars[j], &term->erase_char))
1735 if (j != line->cols) break;
1741 * Swap screens. If `reset' is TRUE and we have been asked to
1742 * switch to the alternate screen, we must bring most of its
1743 * configuration from the main screen and erase the contents of the
1744 * alternate screen completely. (This is even true if we're already
1745 * on it! Blame xterm.)
1747 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
1753 reset = FALSE; /* do no weird resetting if which==0 */
1755 if (which != term->alt_which) {
1756 term->alt_which = which;
1758 ttr = term->alt_screen;
1759 term->alt_screen = term->screen;
1761 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
1763 if (!reset && !keep_cur_pos)
1764 term->curs.x = term->alt_x;
1767 if (!reset && !keep_cur_pos)
1768 term->curs.y = term->alt_y;
1771 if (!reset) term->marg_t = term->alt_t;
1774 if (!reset) term->marg_b = term->alt_b;
1777 if (!reset) term->dec_om = term->alt_om;
1780 if (!reset) term->wrap = term->alt_wrap;
1783 if (!reset) term->wrapnext = term->alt_wnext;
1784 term->alt_wnext = t;
1786 if (!reset) term->insert = term->alt_ins;
1789 if (!reset) term->cset = term->alt_cset;
1792 if (!reset) term->utf = term->alt_utf;
1795 if (!reset) term->sco_acs = term->alt_sco_acs;
1796 term->alt_sco_acs = t;
1799 if (reset && term->screen) {
1801 * Yes, this _is_ supposed to honour background-colour-erase.
1803 erase_lots(term, FALSE, TRUE, TRUE);
1808 * Update the scroll bar.
1810 static void update_sbar(Terminal *term)
1812 int nscroll = sblines(term);
1813 set_sbar(term->frontend, nscroll + term->rows,
1814 nscroll + term->disptop, term->rows);
1818 * Check whether the region bounded by the two pointers intersects
1819 * the scroll region, and de-select the on-screen selection if so.
1821 static void check_selection(Terminal *term, pos from, pos to)
1823 if (poslt(from, term->selend) && poslt(term->selstart, to))
1828 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1829 * for backward.) `sb' is TRUE if the scrolling is permitted to
1830 * affect the scrollback buffer.
1832 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
1835 int i, seltop, olddisptop, shift;
1837 if (topline != 0 || term->alt_which != 0)
1840 olddisptop = term->disptop;
1844 line = delpos234(term->screen, botline);
1845 resizeline(term, line, term->cols);
1846 for (i = 0; i < term->cols; i++)
1847 copy_termchar(line, i, &term->erase_char);
1848 line->lattr = LATTR_NORM;
1849 addpos234(term->screen, line, topline);
1851 if (term->selstart.y >= topline && term->selstart.y <= botline) {
1853 if (term->selstart.y > botline) {
1854 term->selstart.y = botline + 1;
1855 term->selstart.x = 0;
1858 if (term->selend.y >= topline && term->selend.y <= botline) {
1860 if (term->selend.y > botline) {
1861 term->selend.y = botline + 1;
1870 line = delpos234(term->screen, topline);
1871 #ifdef TERM_CC_DIAGS
1874 if (sb && term->savelines > 0) {
1875 int sblen = count234(term->scrollback);
1877 * We must add this line to the scrollback. We'll
1878 * remove a line from the top of the scrollback if
1879 * the scrollback is full.
1881 if (sblen == term->savelines) {
1882 unsigned char *cline;
1885 cline = delpos234(term->scrollback, 0);
1888 term->tempsblines += 1;
1890 addpos234(term->scrollback, compressline(line), sblen);
1892 /* now `line' itself can be reused as the bottom line */
1895 * If the user is currently looking at part of the
1896 * scrollback, and they haven't enabled any options
1897 * that are going to reset the scrollback as a
1898 * result of this movement, then the chances are
1899 * they'd like to keep looking at the same line. So
1900 * we move their viewpoint at the same rate as the
1901 * scroll, at least until their viewpoint hits the
1902 * top end of the scrollback buffer, at which point
1903 * we don't have the choice any more.
1905 * Thanks to Jan Holmen Holsten for the idea and
1906 * initial implementation.
1908 if (term->disptop > -term->savelines && term->disptop < 0)
1911 resizeline(term, line, term->cols);
1912 for (i = 0; i < term->cols; i++)
1913 copy_termchar(line, i, &term->erase_char);
1914 line->lattr = LATTR_NORM;
1915 addpos234(term->screen, line, botline);
1918 * If the selection endpoints move into the scrollback,
1919 * we keep them moving until they hit the top. However,
1920 * of course, if the line _hasn't_ moved into the
1921 * scrollback then we don't do this, and cut them off
1922 * at the top of the scroll region.
1924 * This applies to selstart and selend (for an existing
1925 * selection), and also selanchor (for one being
1926 * selected as we speak).
1928 seltop = sb ? -term->savelines : topline;
1930 if (term->selstate != NO_SELECTION) {
1931 if (term->selstart.y >= seltop &&
1932 term->selstart.y <= botline) {
1934 if (term->selstart.y < seltop) {
1935 term->selstart.y = seltop;
1936 term->selstart.x = 0;
1939 if (term->selend.y >= seltop && term->selend.y <= botline) {
1941 if (term->selend.y < seltop) {
1942 term->selend.y = seltop;
1946 if (term->selanchor.y >= seltop &&
1947 term->selanchor.y <= botline) {
1948 term->selanchor.y--;
1949 if (term->selanchor.y < seltop) {
1950 term->selanchor.y = seltop;
1951 term->selanchor.x = 0;
1959 #ifdef OPTIMISE_SCROLL
1960 shift += term->disptop - olddisptop;
1961 if (shift < term->rows && shift > -term->rows && shift != 0)
1962 scroll_display(term, topline, botline, shift);
1963 #endif /* OPTIMISE_SCROLL */
1966 #ifdef OPTIMISE_SCROLL
1968 * Add a scroll of a region on the screen into the pending scroll list.
1969 * `lines' is +ve for scrolling forward, -ve for backward.
1971 * If the scroll is on the same area as the last scroll in the list,
1974 static void save_scroll(Terminal *term, int topline, int botline, int lines)
1976 struct scrollregion *newscroll;
1977 if (term->scrolltail &&
1978 term->scrolltail->topline == topline &&
1979 term->scrolltail->botline == botline) {
1980 term->scrolltail->lines += lines;
1982 newscroll = snew(struct scrollregion);
1983 newscroll->topline = topline;
1984 newscroll->botline = botline;
1985 newscroll->lines = lines;
1986 newscroll->next = NULL;
1988 if (!term->scrollhead)
1989 term->scrollhead = newscroll;
1991 term->scrolltail->next = newscroll;
1992 term->scrolltail = newscroll;
1997 * Scroll the physical display, and our conception of it in disptext.
1999 static void scroll_display(Terminal *term, int topline, int botline, int lines)
2001 int distance, nlines, i, j;
2003 distance = lines > 0 ? lines : -lines;
2004 nlines = botline - topline + 1 - distance;
2006 for (i = 0; i < nlines; i++)
2007 for (j = 0; j < term->cols; j++)
2008 copy_termchar(term->disptext[i], j,
2009 term->disptext[i+distance]->chars+j);
2010 if (term->dispcursy >= 0 &&
2011 term->dispcursy >= topline + distance &&
2012 term->dispcursy < topline + distance + nlines)
2013 term->dispcursy -= distance;
2014 for (i = 0; i < distance; i++)
2015 for (j = 0; j < term->cols; j++)
2016 term->disptext[nlines+i]->chars[j].attr |= ATTR_INVALID;
2018 for (i = nlines; i-- ;)
2019 for (j = 0; j < term->cols; j++)
2020 copy_termchar(term->disptext[i+distance], j,
2021 term->disptext[i]->chars+j);
2022 if (term->dispcursy >= 0 &&
2023 term->dispcursy >= topline &&
2024 term->dispcursy < topline + nlines)
2025 term->dispcursy += distance;
2026 for (i = 0; i < distance; i++)
2027 for (j = 0; j < term->cols; j++)
2028 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
2030 save_scroll(term, topline, botline, lines);
2032 #endif /* OPTIMISE_SCROLL */
2035 * Move the cursor to a given position, clipping at boundaries. We
2036 * may or may not want to clip at the scroll margin: marg_clip is 0
2037 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
2038 * even _being_ outside the margins.
2040 static void move(Terminal *term, int x, int y, int marg_clip)
2044 if (x >= term->cols)
2047 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
2050 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
2056 if (y >= term->rows)
2060 term->wrapnext = FALSE;
2064 * Save or restore the cursor and SGR mode.
2066 static void save_cursor(Terminal *term, int save)
2069 term->savecurs = term->curs;
2070 term->save_attr = term->curr_attr;
2071 term->save_cset = term->cset;
2072 term->save_utf = term->utf;
2073 term->save_wnext = term->wrapnext;
2074 term->save_csattr = term->cset_attr[term->cset];
2075 term->save_sco_acs = term->sco_acs;
2077 term->curs = term->savecurs;
2078 /* Make sure the window hasn't shrunk since the save */
2079 if (term->curs.x >= term->cols)
2080 term->curs.x = term->cols - 1;
2081 if (term->curs.y >= term->rows)
2082 term->curs.y = term->rows - 1;
2084 term->curr_attr = term->save_attr;
2085 term->cset = term->save_cset;
2086 term->utf = term->save_utf;
2087 term->wrapnext = term->save_wnext;
2089 * wrapnext might reset to False if the x position is no
2090 * longer at the rightmost edge.
2092 if (term->wrapnext && term->curs.x < term->cols-1)
2093 term->wrapnext = FALSE;
2094 term->cset_attr[term->cset] = term->save_csattr;
2095 term->sco_acs = term->save_sco_acs;
2096 set_erase_char(term);
2101 * This function is called before doing _anything_ which affects
2102 * only part of a line of text. It is used to mark the boundary
2103 * between two character positions, and it indicates that some sort
2104 * of effect is going to happen on only one side of that boundary.
2106 * The effect of this function is to check whether a CJK
2107 * double-width character is straddling the boundary, and to remove
2108 * it and replace it with two spaces if so. (Of course, one or
2109 * other of those spaces is then likely to be replaced with
2110 * something else again, as a result of whatever happens next.)
2112 * Also, if the boundary is at the right-hand _edge_ of the screen,
2113 * it implies something deliberate is being done to the rightmost
2114 * column position; hence we must clear LATTR_WRAPPED2.
2116 * The input to the function is the coordinates of the _second_
2117 * character of the pair.
2119 static void check_boundary(Terminal *term, int x, int y)
2123 /* Validate input coordinates, just in case. */
2124 if (x == 0 || x > term->cols)
2127 ldata = scrlineptr(y);
2128 if (x == term->cols) {
2129 ldata->lattr &= ~LATTR_WRAPPED2;
2131 if (ldata->chars[x].chr == UCSWIDE) {
2132 clear_cc(ldata, x-1);
2134 ldata->chars[x-1].chr = ' ' | CSET_ASCII;
2135 ldata->chars[x] = ldata->chars[x-1];
2141 * Erase a large portion of the screen: the whole screen, or the
2142 * whole line, or parts thereof.
2144 static void erase_lots(Terminal *term,
2145 int line_only, int from_begin, int to_end)
2149 int erasing_lines_from_top = 0;
2152 start.y = term->curs.y;
2154 end.y = term->curs.y + 1;
2156 erase_lattr = FALSE;
2171 if (!from_begin || !to_end)
2172 check_boundary(term, term->curs.x, term->curs.y);
2173 check_selection(term, start, end);
2175 /* Clear screen also forces a full window redraw, just in case. */
2176 if (start.y == 0 && start.x == 0 && end.y == term->rows)
2177 term_invalidate(term);
2179 /* Lines scrolled away shouldn't be brought back on if the terminal
2181 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
2182 erasing_lines_from_top = 1;
2184 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
2185 /* If it's a whole number of lines, starting at the top, and
2186 * we're fully erasing them, erase by scrolling and keep the
2187 * lines in the scrollback. */
2188 int scrolllines = end.y;
2189 if (end.y == term->rows) {
2190 /* Shrink until we find a non-empty row.*/
2191 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
2193 if (scrolllines > 0)
2194 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
2196 termline *ldata = scrlineptr(start.y);
2197 while (poslt(start, end)) {
2198 if (start.x == term->cols) {
2200 ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
2202 ldata->lattr = LATTR_NORM;
2204 copy_termchar(ldata, start.x, &term->erase_char);
2206 if (incpos(start) && start.y < term->rows) {
2207 ldata = scrlineptr(start.y);
2212 /* After an erase of lines from the top of the screen, we shouldn't
2213 * bring the lines back again if the terminal enlarges (since the user or
2214 * application has explictly thrown them away). */
2215 if (erasing_lines_from_top && !(term->alt_which))
2216 term->tempsblines = 0;
2220 * Insert or delete characters within the current line. n is +ve if
2221 * insertion is desired, and -ve for deletion.
2223 static void insch(Terminal *term, int n)
2225 int dir = (n < 0 ? -1 : +1);
2230 n = (n < 0 ? -n : n);
2231 if (n > term->cols - term->curs.x)
2232 n = term->cols - term->curs.x;
2233 m = term->cols - term->curs.x - n;
2234 cursplus.y = term->curs.y;
2235 cursplus.x = term->curs.x + n;
2236 check_selection(term, term->curs, cursplus);
2237 check_boundary(term, term->curs.x, term->curs.y);
2239 check_boundary(term, term->curs.x + n, term->curs.y);
2240 ldata = scrlineptr(term->curs.y);
2242 for (j = 0; j < m; j++)
2243 move_termchar(ldata,
2244 ldata->chars + term->curs.x + j,
2245 ldata->chars + term->curs.x + j + n);
2247 copy_termchar(ldata, term->curs.x + m++, &term->erase_char);
2250 move_termchar(ldata,
2251 ldata->chars + term->curs.x + j + n,
2252 ldata->chars + term->curs.x + j);
2254 copy_termchar(ldata, term->curs.x + n, &term->erase_char);
2259 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2260 * whether the mode is a DEC private one or a normal one.)
2262 static void toggle_mode(Terminal *term, int mode, int query, int state)
2266 case 1: /* DECCKM: application cursor keys */
2267 term->app_cursor_keys = state;
2269 case 2: /* DECANM: VT52 mode */
2270 term->vt52_mode = !state;
2271 if (term->vt52_mode) {
2272 term->blink_is_real = FALSE;
2273 term->vt52_bold = FALSE;
2275 term->blink_is_real = term->cfg.blinktext;
2277 term_schedule_tblink(term);
2279 case 3: /* DECCOLM: 80/132 columns */
2281 if (!term->cfg.no_remote_resize)
2282 request_resize(term->frontend, state ? 132 : 80, term->rows);
2283 term->reset_132 = state;
2284 term->alt_t = term->marg_t = 0;
2285 term->alt_b = term->marg_b = term->rows - 1;
2286 move(term, 0, 0, 0);
2287 erase_lots(term, FALSE, TRUE, TRUE);
2289 case 5: /* DECSCNM: reverse video */
2291 * Toggle reverse video. If we receive an OFF within the
2292 * visual bell timeout period after an ON, we trigger an
2293 * effective visual bell, so that ESC[?5hESC[?5l will
2294 * always be an actually _visible_ visual bell.
2296 if (term->rvideo && !state) {
2297 /* This is an OFF, so set up a vbell */
2298 term_schedule_vbell(term, TRUE, term->rvbell_startpoint);
2299 } else if (!term->rvideo && state) {
2300 /* This is an ON, so we notice the time and save it. */
2301 term->rvbell_startpoint = GETTICKCOUNT();
2303 term->rvideo = state;
2304 seen_disp_event(term);
2306 case 6: /* DECOM: DEC origin mode */
2307 term->dec_om = state;
2309 case 7: /* DECAWM: auto wrap */
2312 case 8: /* DECARM: auto key repeat */
2313 term->repeat_off = !state;
2315 case 10: /* DECEDM: set local edit mode */
2316 term->term_editing = state;
2317 if (term->ldisc) /* cause ldisc to notice changes */
2318 ldisc_send(term->ldisc, NULL, 0, 0);
2320 case 25: /* DECTCEM: enable/disable cursor */
2321 compatibility2(OTHER, VT220);
2322 term->cursor_on = state;
2323 seen_disp_event(term);
2325 case 47: /* alternate screen */
2326 compatibility(OTHER);
2328 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
2331 case 1000: /* xterm mouse 1 */
2332 term->xterm_mouse = state ? 1 : 0;
2333 set_raw_mouse_mode(term->frontend, state);
2335 case 1002: /* xterm mouse 2 */
2336 term->xterm_mouse = state ? 2 : 0;
2337 set_raw_mouse_mode(term->frontend, state);
2339 case 1047: /* alternate screen */
2340 compatibility(OTHER);
2342 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
2345 case 1048: /* save/restore cursor */
2346 if (!term->cfg.no_alt_screen)
2347 save_cursor(term, state);
2348 if (!state) seen_disp_event(term);
2350 case 1049: /* cursor & alternate screen */
2351 if (state && !term->cfg.no_alt_screen)
2352 save_cursor(term, state);
2353 if (!state) seen_disp_event(term);
2354 compatibility(OTHER);
2356 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
2357 if (!state && !term->cfg.no_alt_screen)
2358 save_cursor(term, state);
2363 case 4: /* IRM: set insert mode */
2364 compatibility(VT102);
2365 term->insert = state;
2367 case 12: /* SRM: set echo mode */
2368 term->term_echoing = !state;
2369 if (term->ldisc) /* cause ldisc to notice changes */
2370 ldisc_send(term->ldisc, NULL, 0, 0);
2372 case 20: /* LNM: Return sends ... */
2373 term->cr_lf_return = state;
2375 case 34: /* WYULCURM: Make cursor BIG */
2376 compatibility2(OTHER, VT220);
2377 term->big_cursor = !state;
2382 * Process an OSC sequence: set window title or icon name.
2384 static void do_osc(Terminal *term)
2387 while (term->osc_strlen--)
2388 term->wordness[(unsigned char)
2389 term->osc_string[term->osc_strlen]] = term->esc_args[0];
2391 term->osc_string[term->osc_strlen] = '\0';
2392 switch (term->esc_args[0]) {
2395 if (!term->cfg.no_remote_wintitle)
2396 set_icon(term->frontend, term->osc_string);
2397 if (term->esc_args[0] == 1)
2399 /* fall through: parameter 0 means set both */
2402 if (!term->cfg.no_remote_wintitle)
2403 set_title(term->frontend, term->osc_string);
2410 * ANSI printing routines.
2412 static void term_print_setup(Terminal *term)
2414 bufchain_clear(&term->printer_buf);
2415 term->print_job = printer_start_job(term->cfg.printer);
2417 static void term_print_flush(Terminal *term)
2422 while ((size = bufchain_size(&term->printer_buf)) > 5) {
2423 bufchain_prefix(&term->printer_buf, &data, &len);
2426 printer_job_data(term->print_job, data, len);
2427 bufchain_consume(&term->printer_buf, len);
2430 static void term_print_finish(Terminal *term)
2436 if (!term->printing && !term->only_printing)
2437 return; /* we need do nothing */
2439 term_print_flush(term);
2440 while ((size = bufchain_size(&term->printer_buf)) > 0) {
2441 bufchain_prefix(&term->printer_buf, &data, &len);
2443 if (c == '\033' || c == '\233') {
2444 bufchain_consume(&term->printer_buf, size);
2447 printer_job_data(term->print_job, &c, 1);
2448 bufchain_consume(&term->printer_buf, 1);
2451 printer_finish_job(term->print_job);
2452 term->print_job = NULL;
2453 term->printing = term->only_printing = FALSE;
2457 * Remove everything currently in `inbuf' and stick it up on the
2458 * in-memory display. There's a big state machine in here to
2459 * process escape sequences...
2461 static void term_out(Terminal *term)
2465 unsigned char localbuf[256], *chars;
2470 chars = NULL; /* placate compiler warnings */
2471 while (nchars > 0 || unget != -1 || bufchain_size(&term->inbuf) > 0) {
2475 bufchain_prefix(&term->inbuf, &ret, &nchars);
2476 if (nchars > sizeof(localbuf))
2477 nchars = sizeof(localbuf);
2478 memcpy(localbuf, ret, nchars);
2479 bufchain_consume(&term->inbuf, nchars);
2481 assert(chars != NULL);
2487 * Optionally log the session traffic to a file. Useful for
2488 * debugging and possibly also useful for actual logging.
2490 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
2491 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
2497 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2498 * be able to display 8-bit characters, but I'll let that go 'cause
2503 * If we're printing, add the character to the printer
2506 if (term->printing) {
2507 bufchain_add(&term->printer_buf, &c, 1);
2510 * If we're in print-only mode, we use a much simpler
2511 * state machine designed only to recognise the ESC[4i
2512 * termination sequence.
2514 if (term->only_printing) {
2516 term->print_state = 1;
2517 else if (c == (unsigned char)'\233')
2518 term->print_state = 2;
2519 else if (c == '[' && term->print_state == 1)
2520 term->print_state = 2;
2521 else if (c == '4' && term->print_state == 2)
2522 term->print_state = 3;
2523 else if (c == 'i' && term->print_state == 3)
2524 term->print_state = 4;
2526 term->print_state = 0;
2527 if (term->print_state == 4) {
2528 term_print_finish(term);
2534 /* First see about all those translations. */
2535 if (term->termstate == TOPLEVEL) {
2537 switch (term->utf_state) {
2540 /* UTF-8 must be stateless so we ignore iso2022. */
2541 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2542 c = term->ucsdata->unitab_ctrl[c];
2543 else c = ((unsigned char)c) | CSET_ASCII;
2545 } else if ((c & 0xe0) == 0xc0) {
2546 term->utf_size = term->utf_state = 1;
2547 term->utf_char = (c & 0x1f);
2548 } else if ((c & 0xf0) == 0xe0) {
2549 term->utf_size = term->utf_state = 2;
2550 term->utf_char = (c & 0x0f);
2551 } else if ((c & 0xf8) == 0xf0) {
2552 term->utf_size = term->utf_state = 3;
2553 term->utf_char = (c & 0x07);
2554 } else if ((c & 0xfc) == 0xf8) {
2555 term->utf_size = term->utf_state = 4;
2556 term->utf_char = (c & 0x03);
2557 } else if ((c & 0xfe) == 0xfc) {
2558 term->utf_size = term->utf_state = 5;
2559 term->utf_char = (c & 0x01);
2570 if ((c & 0xC0) != 0x80) {
2573 term->utf_state = 0;
2576 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
2577 if (--term->utf_state)
2582 /* Is somebody trying to be evil! */
2584 (c < 0x800 && term->utf_size >= 2) ||
2585 (c < 0x10000 && term->utf_size >= 3) ||
2586 (c < 0x200000 && term->utf_size >= 4) ||
2587 (c < 0x4000000 && term->utf_size >= 5))
2590 /* Unicode line separator and paragraph separator are CR-LF */
2591 if (c == 0x2028 || c == 0x2029)
2594 /* High controls are probably a Baaad idea too. */
2598 /* The UTF-16 surrogates are not nice either. */
2599 /* The standard give the option of decoding these:
2600 * I don't want to! */
2601 if (c >= 0xD800 && c < 0xE000)
2604 /* ISO 10646 characters now limited to UTF-16 range. */
2608 /* This is currently a TagPhobic application.. */
2609 if (c >= 0xE0000 && c <= 0xE007F)
2612 /* U+FEFF is best seen as a null. */
2615 /* But U+FFFE is an error. */
2616 if (c == 0xFFFE || c == 0xFFFF)
2621 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2622 else if(term->sco_acs &&
2623 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
2625 if (term->sco_acs == 2) c |= 0x80;
2628 switch (term->cset_attr[term->cset]) {
2630 * Linedraw characters are different from 'ESC ( B'
2631 * only for a small range. For ones outside that
2632 * range, make sure we use the same font as well as
2633 * the same encoding.
2636 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2637 c = term->ucsdata->unitab_ctrl[c];
2639 c = ((unsigned char) c) | CSET_LINEDRW;
2643 /* If UK-ASCII, make the '#' a LineDraw Pound */
2645 c = '}' | CSET_LINEDRW;
2648 /*FALLTHROUGH*/ case CSET_ASCII:
2649 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2650 c = term->ucsdata->unitab_ctrl[c];
2652 c = ((unsigned char) c) | CSET_ASCII;
2655 if (c>=' ') c = ((unsigned char)c) | CSET_SCOACS;
2662 * How about C1 controls?
2663 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2665 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
2666 !term->vt52_mode && has_compat(VT220)) {
2670 term->termstate = SEEN_ESC;
2671 term->esc_query = FALSE;
2672 c = '@' + (c & 0x1F);
2676 /* Or the GL control. */
2677 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
2678 if (term->curs.x && !term->wrapnext)
2680 term->wrapnext = FALSE;
2681 /* destructive backspace might be disabled */
2682 if (!term->cfg.no_dbackspace) {
2683 check_boundary(term, term->curs.x, term->curs.y);
2684 check_boundary(term, term->curs.x+1, term->curs.y);
2685 copy_termchar(scrlineptr(term->curs.y),
2686 term->curs.x, &term->erase_char);
2689 /* Or normal C0 controls. */
2690 if ((c & ~0x1F) == 0 && term->termstate < DO_CTRLS) {
2692 case '\005': /* ENQ: terminal type query */
2694 * Strictly speaking this is VT100 but a VT100 defaults to
2695 * no response. Other terminals respond at their option.
2697 * Don't put a CR in the default string as this tends to
2698 * upset some weird software.
2700 compatibility(ANSIMIN);
2702 char abuf[lenof(term->cfg.answerback)], *s, *d;
2703 for (s = term->cfg.answerback, d = abuf; *s;) {
2705 char c = ctrlparse(s, &n);
2713 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
2717 case '\007': /* BEL: Bell */
2719 struct beeptime *newbeep;
2720 unsigned long ticks;
2722 ticks = GETTICKCOUNT();
2724 if (!term->beep_overloaded) {
2725 newbeep = snew(struct beeptime);
2726 newbeep->ticks = ticks;
2727 newbeep->next = NULL;
2728 if (!term->beephead)
2729 term->beephead = newbeep;
2731 term->beeptail->next = newbeep;
2732 term->beeptail = newbeep;
2737 * Throw out any beeps that happened more than
2740 while (term->beephead &&
2741 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
2742 struct beeptime *tmp = term->beephead;
2743 term->beephead = tmp->next;
2745 if (!term->beephead)
2746 term->beeptail = NULL;
2750 if (term->cfg.bellovl && term->beep_overloaded &&
2751 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
2753 * If we're currently overloaded and the
2754 * last beep was more than s seconds ago,
2755 * leave overload mode.
2757 term->beep_overloaded = FALSE;
2758 } else if (term->cfg.bellovl && !term->beep_overloaded &&
2759 term->nbeeps >= term->cfg.bellovl_n) {
2761 * Now, if we have n or more beeps
2762 * remaining in the queue, go into overload
2765 term->beep_overloaded = TRUE;
2767 term->lastbeep = ticks;
2770 * Perform an actual beep if we're not overloaded.
2772 if (!term->cfg.bellovl || !term->beep_overloaded) {
2773 do_beep(term->frontend, term->cfg.beep);
2775 if (term->cfg.beep == BELL_VISUAL) {
2776 term_schedule_vbell(term, FALSE, 0);
2779 seen_disp_event(term);
2782 case '\b': /* BS: Back space */
2783 if (term->curs.x == 0 &&
2784 (term->curs.y == 0 || term->wrap == 0))
2786 else if (term->curs.x == 0 && term->curs.y > 0)
2787 term->curs.x = term->cols - 1, term->curs.y--;
2788 else if (term->wrapnext)
2789 term->wrapnext = FALSE;
2792 seen_disp_event(term);
2794 case '\016': /* LS1: Locking-shift one */
2795 compatibility(VT100);
2798 case '\017': /* LS0: Locking-shift zero */
2799 compatibility(VT100);
2802 case '\033': /* ESC: Escape */
2803 if (term->vt52_mode)
2804 term->termstate = VT52_ESC;
2806 compatibility(ANSIMIN);
2807 term->termstate = SEEN_ESC;
2808 term->esc_query = FALSE;
2811 case '\015': /* CR: Carriage return */
2813 term->wrapnext = FALSE;
2814 seen_disp_event(term);
2815 term->paste_hold = 0;
2817 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2819 case '\014': /* FF: Form feed */
2820 if (has_compat(SCOANSI)) {
2821 move(term, 0, 0, 0);
2822 erase_lots(term, FALSE, FALSE, TRUE);
2824 term->wrapnext = FALSE;
2825 seen_disp_event(term);
2828 case '\013': /* VT: Line tabulation */
2829 compatibility(VT100);
2830 case '\012': /* LF: Line feed */
2831 if (term->curs.y == term->marg_b)
2832 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2833 else if (term->curs.y < term->rows - 1)
2835 if (term->cfg.lfhascr)
2837 term->wrapnext = FALSE;
2838 seen_disp_event(term);
2839 term->paste_hold = 0;
2841 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2843 case '\t': /* HT: Character tabulation */
2845 pos old_curs = term->curs;
2846 termline *ldata = scrlineptr(term->curs.y);
2850 } while (term->curs.x < term->cols - 1 &&
2851 !term->tabs[term->curs.x]);
2853 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) {
2854 if (term->curs.x >= term->cols / 2)
2855 term->curs.x = term->cols / 2 - 1;
2857 if (term->curs.x >= term->cols)
2858 term->curs.x = term->cols - 1;
2861 check_selection(term, old_curs, term->curs);
2863 seen_disp_event(term);
2867 switch (term->termstate) {
2869 /* Only graphic characters get this far;
2870 * ctrls are stripped above */
2872 termline *cline = scrlineptr(term->curs.y);
2877 width = (term->cfg.cjk_ambig_wide ?
2878 mk_wcwidth_cjk((wchar_t) c) :
2879 mk_wcwidth((wchar_t) c));
2881 if (term->wrapnext && term->wrap && width > 0) {
2882 cline->lattr |= LATTR_WRAPPED;
2883 if (term->curs.y == term->marg_b)
2884 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2885 else if (term->curs.y < term->rows - 1)
2888 term->wrapnext = FALSE;
2889 cline = scrlineptr(term->curs.y);
2891 if (term->insert && width > 0)
2893 if (term->selstate != NO_SELECTION) {
2894 pos cursplus = term->curs;
2896 check_selection(term, term->curs, cursplus);
2898 if (((c & CSET_MASK) == CSET_ASCII ||
2899 (c & CSET_MASK) == 0) &&
2901 logtraffic(term->logctx, (unsigned char) c,
2907 * If we're about to display a double-width
2908 * character starting in the rightmost
2909 * column, then we do something special
2910 * instead. We must print a space in the
2911 * last column of the screen, then wrap;
2912 * and we also set LATTR_WRAPPED2 which
2913 * instructs subsequent cut-and-pasting not
2914 * only to splice this line to the one
2915 * after it, but to ignore the space in the
2916 * last character position as well.
2917 * (Because what was actually output to the
2918 * terminal was presumably just a sequence
2919 * of CJK characters, and we don't want a
2920 * space to be pasted in the middle of
2921 * those just because they had the
2922 * misfortune to start in the wrong parity
2923 * column. xterm concurs.)
2925 check_boundary(term, term->curs.x, term->curs.y);
2926 check_boundary(term, term->curs.x+2, term->curs.y);
2927 if (term->curs.x == term->cols-1) {
2928 copy_termchar(cline, term->curs.x,
2930 cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2;
2931 if (term->curs.y == term->marg_b)
2932 scroll(term, term->marg_t, term->marg_b,
2934 else if (term->curs.y < term->rows - 1)
2937 cline = scrlineptr(term->curs.y);
2938 /* Now we must check_boundary again, of course. */
2939 check_boundary(term, term->curs.x, term->curs.y);
2940 check_boundary(term, term->curs.x+2, term->curs.y);
2944 clear_cc(cline, term->curs.x);
2945 cline->chars[term->curs.x].chr = c;
2946 cline->chars[term->curs.x].attr = term->curr_attr;
2951 clear_cc(cline, term->curs.x);
2952 cline->chars[term->curs.x].chr = UCSWIDE;
2953 cline->chars[term->curs.x].attr = term->curr_attr;
2957 check_boundary(term, term->curs.x, term->curs.y);
2958 check_boundary(term, term->curs.x+1, term->curs.y);
2961 clear_cc(cline, term->curs.x);
2962 cline->chars[term->curs.x].chr = c;
2963 cline->chars[term->curs.x].attr = term->curr_attr;
2967 if (term->curs.x > 0) {
2968 int x = term->curs.x - 1;
2970 /* If we're in wrapnext state, the character
2971 * to combine with is _here_, not to our left. */
2976 * If the previous character is
2977 * UCSWIDE, back up another one.
2979 if (cline->chars[x].chr == UCSWIDE) {
2984 add_cc(cline, x, c);
2985 seen_disp_event(term);
2992 if (term->curs.x == term->cols) {
2994 term->wrapnext = TRUE;
2995 if (term->wrap && term->vt52_mode) {
2996 cline->lattr |= LATTR_WRAPPED;
2997 if (term->curs.y == term->marg_b)
2998 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2999 else if (term->curs.y < term->rows - 1)
3002 term->wrapnext = FALSE;
3005 seen_disp_event(term);
3011 * This state is virtually identical to SEEN_ESC, with the
3012 * exception that we have an OSC sequence in the pipeline,
3013 * and _if_ we see a backslash, we process it.
3017 term->termstate = TOPLEVEL;
3020 /* else fall through */
3022 if (c >= ' ' && c <= '/') {
3023 if (term->esc_query)
3024 term->esc_query = -1;
3026 term->esc_query = c;
3029 term->termstate = TOPLEVEL;
3030 switch (ANSI(c, term->esc_query)) {
3031 case '[': /* enter CSI mode */
3032 term->termstate = SEEN_CSI;
3033 term->esc_nargs = 1;
3034 term->esc_args[0] = ARG_DEFAULT;
3035 term->esc_query = FALSE;
3037 case ']': /* OSC: xterm escape sequences */
3038 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3039 compatibility(OTHER);
3040 term->termstate = SEEN_OSC;
3041 term->esc_args[0] = 0;
3043 case '7': /* DECSC: save cursor */
3044 compatibility(VT100);
3045 save_cursor(term, TRUE);
3047 case '8': /* DECRC: restore cursor */
3048 compatibility(VT100);
3049 save_cursor(term, FALSE);
3050 seen_disp_event(term);
3052 case '=': /* DECKPAM: Keypad application mode */
3053 compatibility(VT100);
3054 term->app_keypad_keys = TRUE;
3056 case '>': /* DECKPNM: Keypad numeric mode */
3057 compatibility(VT100);
3058 term->app_keypad_keys = FALSE;
3060 case 'D': /* IND: exactly equivalent to LF */
3061 compatibility(VT100);
3062 if (term->curs.y == term->marg_b)
3063 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3064 else if (term->curs.y < term->rows - 1)
3066 term->wrapnext = FALSE;
3067 seen_disp_event(term);
3069 case 'E': /* NEL: exactly equivalent to CR-LF */
3070 compatibility(VT100);
3072 if (term->curs.y == term->marg_b)
3073 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3074 else if (term->curs.y < term->rows - 1)
3076 term->wrapnext = FALSE;
3077 seen_disp_event(term);
3079 case 'M': /* RI: reverse index - backwards LF */
3080 compatibility(VT100);
3081 if (term->curs.y == term->marg_t)
3082 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
3083 else if (term->curs.y > 0)
3085 term->wrapnext = FALSE;
3086 seen_disp_event(term);
3088 case 'Z': /* DECID: terminal type query */
3089 compatibility(VT100);
3091 ldisc_send(term->ldisc, term->id_string,
3092 strlen(term->id_string), 0);
3094 case 'c': /* RIS: restore power-on settings */
3095 compatibility(VT100);
3096 power_on(term, TRUE);
3097 if (term->ldisc) /* cause ldisc to notice changes */
3098 ldisc_send(term->ldisc, NULL, 0, 0);
3099 if (term->reset_132) {
3100 if (!term->cfg.no_remote_resize)
3101 request_resize(term->frontend, 80, term->rows);
3102 term->reset_132 = 0;
3105 seen_disp_event(term);
3107 case 'H': /* HTS: set a tab */
3108 compatibility(VT100);
3109 term->tabs[term->curs.x] = TRUE;
3112 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3113 compatibility(VT100);
3119 for (i = 0; i < term->rows; i++) {
3120 ldata = scrlineptr(i);
3121 for (j = 0; j < term->cols; j++) {
3122 copy_termchar(ldata, j,
3123 &term->basic_erase_char);
3124 ldata->chars[j].chr = 'E';
3126 ldata->lattr = LATTR_NORM;
3129 seen_disp_event(term);
3130 scrtop.x = scrtop.y = 0;
3132 scrbot.y = term->rows;
3133 check_selection(term, scrtop, scrbot);
3137 case ANSI('3', '#'):
3138 case ANSI('4', '#'):
3139 case ANSI('5', '#'):
3140 case ANSI('6', '#'):
3141 compatibility(VT100);
3145 switch (ANSI(c, term->esc_query)) {
3146 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3149 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3152 case ANSI('5', '#'): /* DECSWL: normal */
3153 nlattr = LATTR_NORM;
3155 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3156 nlattr = LATTR_WIDE;
3159 scrlineptr(term->curs.y)->lattr = nlattr;
3162 /* GZD4: G0 designate 94-set */
3163 case ANSI('A', '('):
3164 compatibility(VT100);
3165 if (!term->cfg.no_remote_charset)
3166 term->cset_attr[0] = CSET_GBCHR;
3168 case ANSI('B', '('):
3169 compatibility(VT100);
3170 if (!term->cfg.no_remote_charset)
3171 term->cset_attr[0] = CSET_ASCII;
3173 case ANSI('0', '('):
3174 compatibility(VT100);
3175 if (!term->cfg.no_remote_charset)
3176 term->cset_attr[0] = CSET_LINEDRW;
3178 case ANSI('U', '('):
3179 compatibility(OTHER);
3180 if (!term->cfg.no_remote_charset)
3181 term->cset_attr[0] = CSET_SCOACS;
3183 /* G1D4: G1-designate 94-set */
3184 case ANSI('A', ')'):
3185 compatibility(VT100);
3186 if (!term->cfg.no_remote_charset)
3187 term->cset_attr[1] = CSET_GBCHR;
3189 case ANSI('B', ')'):
3190 compatibility(VT100);
3191 if (!term->cfg.no_remote_charset)
3192 term->cset_attr[1] = CSET_ASCII;
3194 case ANSI('0', ')'):
3195 compatibility(VT100);
3196 if (!term->cfg.no_remote_charset)
3197 term->cset_attr[1] = CSET_LINEDRW;
3199 case ANSI('U', ')'):
3200 compatibility(OTHER);
3201 if (!term->cfg.no_remote_charset)
3202 term->cset_attr[1] = CSET_SCOACS;
3204 /* DOCS: Designate other coding system */
3205 case ANSI('8', '%'): /* Old Linux code */
3206 case ANSI('G', '%'):
3207 compatibility(OTHER);
3208 if (!term->cfg.no_remote_charset)
3211 case ANSI('@', '%'):
3212 compatibility(OTHER);
3213 if (!term->cfg.no_remote_charset)
3219 term->termstate = TOPLEVEL; /* default */
3221 if (term->esc_nargs <= ARGS_MAX) {
3222 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
3223 term->esc_args[term->esc_nargs - 1] = 0;
3224 term->esc_args[term->esc_nargs - 1] =
3225 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
3227 term->termstate = SEEN_CSI;
3228 } else if (c == ';') {
3229 if (++term->esc_nargs <= ARGS_MAX)
3230 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
3231 term->termstate = SEEN_CSI;
3232 } else if (c < '@') {
3233 if (term->esc_query)
3234 term->esc_query = -1;
3236 term->esc_query = TRUE;
3238 term->esc_query = c;
3239 term->termstate = SEEN_CSI;
3241 switch (ANSI(c, term->esc_query)) {
3242 case 'A': /* CUU: move up N lines */
3243 move(term, term->curs.x,
3244 term->curs.y - def(term->esc_args[0], 1), 1);
3245 seen_disp_event(term);
3247 case 'e': /* VPR: move down N lines */
3248 compatibility(ANSI);
3250 case 'B': /* CUD: Cursor down */
3251 move(term, term->curs.x,
3252 term->curs.y + def(term->esc_args[0], 1), 1);
3253 seen_disp_event(term);
3255 case ANSI('c', '>'): /* DA: report xterm version */
3256 compatibility(OTHER);
3257 /* this reports xterm version 136 so that VIM can
3258 use the drag messages from the mouse reporting */
3260 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
3262 case 'a': /* HPR: move right N cols */
3263 compatibility(ANSI);
3265 case 'C': /* CUF: Cursor right */
3266 move(term, term->curs.x + def(term->esc_args[0], 1),
3268 seen_disp_event(term);
3270 case 'D': /* CUB: move left N cols */
3271 move(term, term->curs.x - def(term->esc_args[0], 1),
3273 seen_disp_event(term);
3275 case 'E': /* CNL: move down N lines and CR */
3276 compatibility(ANSI);
3278 term->curs.y + def(term->esc_args[0], 1), 1);
3279 seen_disp_event(term);
3281 case 'F': /* CPL: move up N lines and CR */
3282 compatibility(ANSI);
3284 term->curs.y - def(term->esc_args[0], 1), 1);
3285 seen_disp_event(term);
3288 case '`': /* HPA: set horizontal posn */
3289 compatibility(ANSI);
3290 move(term, def(term->esc_args[0], 1) - 1,
3292 seen_disp_event(term);
3294 case 'd': /* VPA: set vertical posn */
3295 compatibility(ANSI);
3296 move(term, term->curs.x,
3297 ((term->dec_om ? term->marg_t : 0) +
3298 def(term->esc_args[0], 1) - 1),
3299 (term->dec_om ? 2 : 0));
3300 seen_disp_event(term);
3303 case 'f': /* HVP: set horz and vert posns at once */
3304 if (term->esc_nargs < 2)
3305 term->esc_args[1] = ARG_DEFAULT;
3306 move(term, def(term->esc_args[1], 1) - 1,
3307 ((term->dec_om ? term->marg_t : 0) +
3308 def(term->esc_args[0], 1) - 1),
3309 (term->dec_om ? 2 : 0));
3310 seen_disp_event(term);
3312 case 'J': /* ED: erase screen or parts of it */
3314 unsigned int i = def(term->esc_args[0], 0) + 1;
3317 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
3320 seen_disp_event(term);
3322 case 'K': /* EL: erase line or parts of it */
3324 unsigned int i = def(term->esc_args[0], 0) + 1;
3327 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
3329 seen_disp_event(term);
3331 case 'L': /* IL: insert lines */
3332 compatibility(VT102);
3333 if (term->curs.y <= term->marg_b)
3334 scroll(term, term->curs.y, term->marg_b,
3335 -def(term->esc_args[0], 1), FALSE);
3336 seen_disp_event(term);
3338 case 'M': /* DL: delete lines */
3339 compatibility(VT102);
3340 if (term->curs.y <= term->marg_b)
3341 scroll(term, term->curs.y, term->marg_b,
3342 def(term->esc_args[0], 1),
3344 seen_disp_event(term);
3346 case '@': /* ICH: insert chars */
3347 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3348 compatibility(VT102);
3349 insch(term, def(term->esc_args[0], 1));
3350 seen_disp_event(term);
3352 case 'P': /* DCH: delete chars */
3353 compatibility(VT102);
3354 insch(term, -def(term->esc_args[0], 1));
3355 seen_disp_event(term);
3357 case 'c': /* DA: terminal type query */
3358 compatibility(VT100);
3359 /* This is the response for a VT102 */
3361 ldisc_send(term->ldisc, term->id_string,
3362 strlen(term->id_string), 0);
3364 case 'n': /* DSR: cursor position query */
3366 if (term->esc_args[0] == 6) {
3368 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
3370 ldisc_send(term->ldisc, buf, strlen(buf), 0);
3371 } else if (term->esc_args[0] == 5) {
3372 ldisc_send(term->ldisc, "\033[0n", 4, 0);
3376 case 'h': /* SM: toggle modes to high */
3378 compatibility(VT100);
3381 for (i = 0; i < term->esc_nargs; i++)
3382 toggle_mode(term, term->esc_args[i],
3383 term->esc_query, TRUE);
3386 case 'i': /* MC: Media copy */
3388 compatibility(VT100);
3390 if (term->esc_nargs != 1) break;
3391 if (term->esc_args[0] == 5 && *term->cfg.printer) {
3392 term->printing = TRUE;
3393 term->only_printing = !term->esc_query;
3394 term->print_state = 0;
3395 term_print_setup(term);
3396 } else if (term->esc_args[0] == 4 &&
3398 term_print_finish(term);
3402 case 'l': /* RM: toggle modes to low */
3404 compatibility(VT100);
3407 for (i = 0; i < term->esc_nargs; i++)
3408 toggle_mode(term, term->esc_args[i],
3409 term->esc_query, FALSE);
3412 case 'g': /* TBC: clear tabs */
3413 compatibility(VT100);
3414 if (term->esc_nargs == 1) {
3415 if (term->esc_args[0] == 0) {
3416 term->tabs[term->curs.x] = FALSE;
3417 } else if (term->esc_args[0] == 3) {
3419 for (i = 0; i < term->cols; i++)
3420 term->tabs[i] = FALSE;
3424 case 'r': /* DECSTBM: set scroll margins */
3425 compatibility(VT100);
3426 if (term->esc_nargs <= 2) {
3428 top = def(term->esc_args[0], 1) - 1;
3429 bot = (term->esc_nargs <= 1
3430 || term->esc_args[1] == 0 ?
3432 def(term->esc_args[1], term->rows)) - 1;
3433 if (bot >= term->rows)
3434 bot = term->rows - 1;
3435 /* VTTEST Bug 9 - if region is less than 2 lines
3436 * don't change region.
3438 if (bot - top > 0) {
3443 * I used to think the cursor should be
3444 * placed at the top of the newly marginned
3445 * area. Apparently not: VMS TPU falls over
3448 * Well actually it should for
3451 term->curs.y = (term->dec_om ?
3453 seen_disp_event(term);
3457 case 'm': /* SGR: set graphics rendition */
3460 * A VT100 without the AVO only had one
3461 * attribute, either underline or
3462 * reverse video depending on the
3463 * cursor type, this was selected by
3467 * This is sometimes DIM, eg on the
3470 * This is sometimes INVIS various ANSI.
3472 * This like 22 disables BOLD, DIM and INVIS
3474 * The ANSI colours appear on any
3475 * terminal that has colour (obviously)
3476 * but the interaction between sgr0 and
3477 * the colours varies but is usually
3478 * related to the background colour
3479 * erase item. The interaction between
3480 * colour attributes and the mono ones
3481 * is also very implementation
3484 * The 39 and 49 attributes are likely
3485 * to be unimplemented.
3488 for (i = 0; i < term->esc_nargs; i++) {
3489 switch (def(term->esc_args[i], 0)) {
3490 case 0: /* restore defaults */
3491 term->curr_attr = term->default_attr;
3493 case 1: /* enable bold */
3494 compatibility(VT100AVO);
3495 term->curr_attr |= ATTR_BOLD;
3497 case 21: /* (enable double underline) */
3498 compatibility(OTHER);
3499 case 4: /* enable underline */
3500 compatibility(VT100AVO);
3501 term->curr_attr |= ATTR_UNDER;
3503 case 5: /* enable blink */
3504 compatibility(VT100AVO);
3505 term->curr_attr |= ATTR_BLINK;
3507 case 6: /* SCO light bkgrd */
3508 compatibility(SCOANSI);
3509 term->blink_is_real = FALSE;
3510 term->curr_attr |= ATTR_BLINK;
3511 term_schedule_tblink(term);
3513 case 7: /* enable reverse video */
3514 term->curr_attr |= ATTR_REVERSE;
3516 case 10: /* SCO acs off */
3517 compatibility(SCOANSI);
3518 if (term->cfg.no_remote_charset) break;
3519 term->sco_acs = 0; break;
3520 case 11: /* SCO acs on */
3521 compatibility(SCOANSI);
3522 if (term->cfg.no_remote_charset) break;
3523 term->sco_acs = 1; break;
3524 case 12: /* SCO acs on, |0x80 */
3525 compatibility(SCOANSI);
3526 if (term->cfg.no_remote_charset) break;
3527 term->sco_acs = 2; break;
3528 case 22: /* disable bold */
3529 compatibility2(OTHER, VT220);
3530 term->curr_attr &= ~ATTR_BOLD;
3532 case 24: /* disable underline */
3533 compatibility2(OTHER, VT220);
3534 term->curr_attr &= ~ATTR_UNDER;
3536 case 25: /* disable blink */
3537 compatibility2(OTHER, VT220);
3538 term->curr_attr &= ~ATTR_BLINK;
3540 case 27: /* disable reverse video */
3541 compatibility2(OTHER, VT220);
3542 term->curr_attr &= ~ATTR_REVERSE;
3553 term->curr_attr &= ~ATTR_FGMASK;
3555 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
3565 /* aixterm-style bright foreground */
3566 term->curr_attr &= ~ATTR_FGMASK;
3568 ((term->esc_args[i] - 90 + 8)
3571 case 39: /* default-foreground */
3572 term->curr_attr &= ~ATTR_FGMASK;
3573 term->curr_attr |= ATTR_DEFFG;
3584 term->curr_attr &= ~ATTR_BGMASK;
3586 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
3596 /* aixterm-style bright background */
3597 term->curr_attr &= ~ATTR_BGMASK;
3599 ((term->esc_args[i] - 100 + 8)
3602 case 49: /* default-background */
3603 term->curr_attr &= ~ATTR_BGMASK;
3604 term->curr_attr |= ATTR_DEFBG;
3606 case 38: /* xterm 256-colour mode */
3607 if (i+2 < term->esc_nargs &&
3608 term->esc_args[i+1] == 5) {
3609 term->curr_attr &= ~ATTR_FGMASK;
3611 ((term->esc_args[i+2] & 0xFF)
3616 case 48: /* xterm 256-colour mode */
3617 if (i+2 < term->esc_nargs &&
3618 term->esc_args[i+1] == 5) {
3619 term->curr_attr &= ~ATTR_BGMASK;
3621 ((term->esc_args[i+2] & 0xFF)
3628 set_erase_char(term);
3631 case 's': /* save cursor */
3632 save_cursor(term, TRUE);
3634 case 'u': /* restore cursor */
3635 save_cursor(term, FALSE);
3636 seen_disp_event(term);
3638 case 't': /* DECSLPP: set page size - ie window height */
3640 * VT340/VT420 sequence DECSLPP, DEC only allows values
3641 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3642 * illegal values (eg first arg 1..9) for window changing
3645 if (term->esc_nargs <= 1
3646 && (term->esc_args[0] < 1 ||
3647 term->esc_args[0] >= 24)) {
3648 compatibility(VT340TEXT);
3649 if (!term->cfg.no_remote_resize)
3650 request_resize(term->frontend, term->cols,
3651 def(term->esc_args[0], 24));
3653 } else if (term->esc_nargs >= 1 &&
3654 term->esc_args[0] >= 1 &&
3655 term->esc_args[0] < 24) {
3656 compatibility(OTHER);
3658 switch (term->esc_args[0]) {
3662 set_iconic(term->frontend, FALSE);
3665 set_iconic(term->frontend, TRUE);
3668 if (term->esc_nargs >= 3) {
3669 if (!term->cfg.no_remote_resize)
3670 move_window(term->frontend,
3671 def(term->esc_args[1], 0),
3672 def(term->esc_args[2], 0));
3676 /* We should resize the window to a given
3677 * size in pixels here, but currently our
3678 * resizing code isn't healthy enough to
3683 set_zorder(term->frontend, TRUE);
3686 /* move to bottom */
3687 set_zorder(term->frontend, FALSE);
3690 refresh_window(term->frontend);
3693 if (term->esc_nargs >= 3) {
3694 if (!term->cfg.no_remote_resize)
3695 request_resize(term->frontend,
3696 def(term->esc_args[2], term->cfg.width),
3697 def(term->esc_args[1], term->cfg.height));
3701 if (term->esc_nargs >= 2)
3702 set_zoomed(term->frontend,
3708 ldisc_send(term->ldisc,
3709 is_iconic(term->frontend) ?
3710 "\033[1t" : "\033[2t", 4, 0);
3714 get_window_pos(term->frontend, &x, &y);
3715 len = sprintf(buf, "\033[3;%d;%dt", x, y);
3716 ldisc_send(term->ldisc, buf, len, 0);
3721 get_window_pixels(term->frontend, &x, &y);
3722 len = sprintf(buf, "\033[4;%d;%dt", x, y);
3723 ldisc_send(term->ldisc, buf, len, 0);
3728 len = sprintf(buf, "\033[8;%d;%dt",
3729 term->rows, term->cols);
3730 ldisc_send(term->ldisc, buf, len, 0);
3735 * Hmmm. Strictly speaking we
3736 * should return `the size of the
3737 * screen in characters', but
3738 * that's not easy: (a) window
3739 * furniture being what it is it's
3740 * hard to compute, and (b) in
3741 * resize-font mode maximising the
3742 * window wouldn't change the
3743 * number of characters. *shrug*. I
3744 * think we'll ignore it for the
3745 * moment and see if anyone
3746 * complains, and then ask them
3747 * what they would like it to do.
3752 !term->cfg.no_remote_qtitle) {
3753 p = get_window_title(term->frontend, TRUE);
3755 ldisc_send(term->ldisc, "\033]L", 3, 0);
3756 ldisc_send(term->ldisc, p, len, 0);
3757 ldisc_send(term->ldisc, "\033\\", 2, 0);
3762 !term->cfg.no_remote_qtitle) {
3763 p = get_window_title(term->frontend,FALSE);
3765 ldisc_send(term->ldisc, "\033]l", 3, 0);
3766 ldisc_send(term->ldisc, p, len, 0);
3767 ldisc_send(term->ldisc, "\033\\", 2, 0);
3773 case 'S': /* SU: Scroll up */
3774 compatibility(SCOANSI);
3775 scroll(term, term->marg_t, term->marg_b,
3776 def(term->esc_args[0], 1), TRUE);
3777 term->wrapnext = FALSE;
3778 seen_disp_event(term);
3780 case 'T': /* SD: Scroll down */
3781 compatibility(SCOANSI);
3782 scroll(term, term->marg_t, term->marg_b,
3783 -def(term->esc_args[0], 1), TRUE);
3784 term->wrapnext = FALSE;
3785 seen_disp_event(term);
3787 case ANSI('|', '*'): /* DECSNLS */
3789 * Set number of lines on screen
3790 * VT420 uses VGA like hardware and can
3791 * support any size in reasonable range
3792 * (24..49 AIUI) with no default specified.
3794 compatibility(VT420);
3795 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
3796 if (!term->cfg.no_remote_resize)
3797 request_resize(term->frontend, term->cols,
3798 def(term->esc_args[0],
3803 case ANSI('|', '$'): /* DECSCPP */
3805 * Set number of columns per page
3806 * Docs imply range is only 80 or 132, but
3809 compatibility(VT340TEXT);
3810 if (term->esc_nargs <= 1) {
3811 if (!term->cfg.no_remote_resize)
3812 request_resize(term->frontend,
3813 def(term->esc_args[0],
3814 term->cfg.width), term->rows);
3818 case 'X': /* ECH: write N spaces w/o moving cursor */
3819 /* XXX VTTEST says this is vt220, vt510 manual
3821 compatibility(ANSIMIN);
3823 int n = def(term->esc_args[0], 1);
3825 int p = term->curs.x;
3826 termline *cline = scrlineptr(term->curs.y);
3828 if (n > term->cols - term->curs.x)
3829 n = term->cols - term->curs.x;
3830 cursplus = term->curs;
3832 check_boundary(term, term->curs.x, term->curs.y);
3833 check_boundary(term, term->curs.x+n, term->curs.y);
3834 check_selection(term, term->curs, cursplus);
3836 copy_termchar(cline, p++,
3838 seen_disp_event(term);
3841 case 'x': /* DECREQTPARM: report terminal characteristics */
3842 compatibility(VT100);
3845 int i = def(term->esc_args[0], 0);
3846 if (i == 0 || i == 1) {
3847 strcpy(buf, "\033[2;1;1;112;112;1;0x");
3849 ldisc_send(term->ldisc, buf, 20, 0);
3854 compatibility(OTHER);
3856 int i = def(term->esc_args[0], 1);
3857 pos old_curs = term->curs;
3859 for(;i>0 && term->curs.x>0; i--) {
3862 } while (term->curs.x >0 &&
3863 !term->tabs[term->curs.x]);
3865 check_selection(term, old_curs, term->curs);
3868 case ANSI('c', '='): /* Hide or Show Cursor */
3869 compatibility(SCOANSI);
3870 switch(term->esc_args[0]) {
3871 case 0: /* hide cursor */
3872 term->cursor_on = FALSE;
3874 case 1: /* restore cursor */
3875 term->big_cursor = FALSE;
3876 term->cursor_on = TRUE;
3878 case 2: /* block cursor */
3879 term->big_cursor = TRUE;
3880 term->cursor_on = TRUE;
3884 case ANSI('C', '='):
3886 * set cursor start on scanline esc_args[0] and
3887 * end on scanline esc_args[1].If you set
3888 * the bottom scan line to a value less than
3889 * the top scan line, the cursor will disappear.
3891 compatibility(SCOANSI);
3892 if (term->esc_nargs >= 2) {
3893 if (term->esc_args[0] > term->esc_args[1])
3894 term->cursor_on = FALSE;
3896 term->cursor_on = TRUE;
3899 case ANSI('D', '='):
3900 compatibility(SCOANSI);
3901 term->blink_is_real = FALSE;
3902 term_schedule_tblink(term);
3903 if (term->esc_args[0]>=1)
3904 term->curr_attr |= ATTR_BLINK;
3906 term->curr_attr &= ~ATTR_BLINK;
3908 case ANSI('E', '='):
3909 compatibility(SCOANSI);
3910 term->blink_is_real = (term->esc_args[0] >= 1);
3911 term_schedule_tblink(term);
3913 case ANSI('F', '='): /* set normal foreground */
3914 compatibility(SCOANSI);
3915 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3917 (sco2ansicolour[term->esc_args[0] & 0x7] |
3918 (term->esc_args[0] & 0x8)) <<
3920 term->curr_attr &= ~ATTR_FGMASK;
3921 term->curr_attr |= colour;
3922 term->default_attr &= ~ATTR_FGMASK;
3923 term->default_attr |= colour;
3924 set_erase_char(term);
3927 case ANSI('G', '='): /* set normal background */
3928 compatibility(SCOANSI);
3929 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3931 (sco2ansicolour[term->esc_args[0] & 0x7] |
3932 (term->esc_args[0] & 0x8)) <<
3934 term->curr_attr &= ~ATTR_BGMASK;
3935 term->curr_attr |= colour;
3936 term->default_attr &= ~ATTR_BGMASK;
3937 term->default_attr |= colour;
3938 set_erase_char(term);
3941 case ANSI('L', '='):
3942 compatibility(SCOANSI);
3943 term->use_bce = (term->esc_args[0] <= 0);
3944 set_erase_char(term);
3946 case ANSI('p', '"'): /* DECSCL: set compat level */
3948 * Allow the host to make this emulator a
3949 * 'perfect' VT102. This first appeared in
3950 * the VT220, but we do need to get back to
3951 * PuTTY mode so I won't check it.
3953 * The arg in 40..42,50 are a PuTTY extension.
3954 * The 2nd arg, 8bit vs 7bit is not checked.
3956 * Setting VT102 mode should also change
3957 * the Fkeys to generate PF* codes as a
3958 * real VT102 has no Fkeys. The VT220 does
3959 * this, F11..F13 become ESC,BS,LF other
3960 * Fkeys send nothing.
3962 * Note ESC c will NOT change this!
3965 switch (term->esc_args[0]) {
3967 term->compatibility_level &= ~TM_VTXXX;
3968 term->compatibility_level |= TM_VT102;
3971 term->compatibility_level &= ~TM_VTXXX;
3972 term->compatibility_level |= TM_VT220;
3976 if (term->esc_args[0] > 60 &&
3977 term->esc_args[0] < 70)
3978 term->compatibility_level |= TM_VTXXX;
3982 term->compatibility_level &= TM_VTXXX;
3985 term->compatibility_level = TM_PUTTY;
3988 term->compatibility_level = TM_SCOANSI;
3992 term->compatibility_level = TM_PUTTY;
3998 /* Change the response to CSI c */
3999 if (term->esc_args[0] == 50) {
4002 strcpy(term->id_string, "\033[?");
4003 for (i = 1; i < term->esc_nargs; i++) {
4005 strcat(term->id_string, ";");
4006 sprintf(lbuf, "%d", term->esc_args[i]);
4007 strcat(term->id_string, lbuf);
4009 strcat(term->id_string, "c");
4012 /* Is this a good idea ?
4013 * Well we should do a soft reset at this point ...
4015 if (!has_compat(VT420) && has_compat(VT100)) {
4016 if (!term->cfg.no_remote_resize) {
4017 if (term->reset_132)
4018 request_resize(132, 24);
4020 request_resize(80, 24);
4028 term->osc_w = FALSE;
4030 case 'P': /* Linux palette sequence */
4031 term->termstate = SEEN_OSC_P;
4032 term->osc_strlen = 0;
4034 case 'R': /* Linux palette reset */
4035 palette_reset(term->frontend);
4036 term_invalidate(term);
4037 term->termstate = TOPLEVEL;
4039 case 'W': /* word-set */
4040 term->termstate = SEEN_OSC_W;
4053 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4057 * Grotty hack to support xterm and DECterm title
4058 * sequences concurrently.
4060 if (term->esc_args[0] == 2) {
4061 term->esc_args[0] = 1;
4064 /* else fall through */
4066 term->termstate = OSC_STRING;
4067 term->osc_strlen = 0;
4072 * This OSC stuff is EVIL. It takes just one character to get into
4073 * sysline mode and it's not initially obvious how to get out.
4074 * So I've added CR and LF as string aborts.
4075 * This shouldn't effect compatibility as I believe embedded
4076 * control characters are supposed to be interpreted (maybe?)
4077 * and they don't display anything useful anyway.
4081 if (c == '\012' || c == '\015') {
4082 term->termstate = TOPLEVEL;
4083 } else if (c == 0234 || c == '\007') {
4085 * These characters terminate the string; ST and BEL
4086 * terminate the sequence and trigger instant
4087 * processing of it, whereas ESC goes back to SEEN_ESC
4088 * mode unless it is followed by \, in which case it is
4089 * synonymous with ST in the first place.
4092 term->termstate = TOPLEVEL;
4093 } else if (c == '\033')
4094 term->termstate = OSC_MAYBE_ST;
4095 else if (term->osc_strlen < OSC_STR_MAX)
4096 term->osc_string[term->osc_strlen++] = (char)c;
4100 int max = (term->osc_strlen == 0 ? 21 : 15);
4102 if ((int)c >= '0' && (int)c <= '9')
4104 else if ((int)c >= 'A' && (int)c <= 'A' + max - 10)
4106 else if ((int)c >= 'a' && (int)c <= 'a' + max - 10)
4109 term->termstate = TOPLEVEL;
4112 term->osc_string[term->osc_strlen++] = val;
4113 if (term->osc_strlen >= 7) {
4114 palette_set(term->frontend, term->osc_string[0],
4115 term->osc_string[1] * 16 + term->osc_string[2],
4116 term->osc_string[3] * 16 + term->osc_string[4],
4117 term->osc_string[5] * 16 + term->osc_string[6]);
4118 term_invalidate(term);
4119 term->termstate = TOPLEVEL;
4135 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4138 term->termstate = OSC_STRING;
4139 term->osc_strlen = 0;
4143 term->termstate = TOPLEVEL;
4144 seen_disp_event(term);
4147 move(term, term->curs.x, term->curs.y - 1, 1);
4150 move(term, term->curs.x, term->curs.y + 1, 1);
4153 move(term, term->curs.x + 1, term->curs.y, 1);
4156 move(term, term->curs.x - 1, term->curs.y, 1);
4159 * From the VT100 Manual
4160 * NOTE: The special graphics characters in the VT100
4161 * are different from those in the VT52
4163 * From VT102 manual:
4164 * 137 _ Blank - Same
4165 * 140 ` Reserved - Humm.
4166 * 141 a Solid rectangle - Similar
4167 * 142 b 1/ - Top half of fraction for the
4168 * 143 c 3/ - subscript numbers below.
4171 * 146 f Degrees - Same
4172 * 147 g Plus or minus - Same
4174 * 151 i Ellipsis (dots)
4177 * 154 l Bar at scan 0
4178 * 155 m Bar at scan 1
4179 * 156 n Bar at scan 2
4180 * 157 o Bar at scan 3 - Similar
4181 * 160 p Bar at scan 4 - Similar
4182 * 161 q Bar at scan 5 - Similar
4183 * 162 r Bar at scan 6 - Same
4184 * 163 s Bar at scan 7 - Similar
4199 term->cset_attr[term->cset = 0] = CSET_LINEDRW;
4202 term->cset_attr[term->cset = 0] = CSET_ASCII;
4205 move(term, 0, 0, 0);
4208 if (term->curs.y == 0)
4209 scroll(term, 0, term->rows - 1, -1, TRUE);
4210 else if (term->curs.y > 0)
4212 term->wrapnext = FALSE;
4215 erase_lots(term, FALSE, FALSE, TRUE);
4219 erase_lots(term, TRUE, FALSE, TRUE);
4223 /* XXX Print cursor line */
4226 /* XXX Start controller mode */
4229 /* XXX Stop controller mode */
4233 term->termstate = VT52_Y1;
4237 ldisc_send(term->ldisc, "\033/Z", 3, 0);
4240 term->app_keypad_keys = TRUE;
4243 term->app_keypad_keys = FALSE;
4246 /* XXX This should switch to VT100 mode not current or default
4247 * VT mode. But this will only have effect in a VT220+
4250 term->vt52_mode = FALSE;
4251 term->blink_is_real = term->cfg.blinktext;
4252 term_schedule_tblink(term);
4256 /* XXX Enter auto print mode */
4259 /* XXX Exit auto print mode */
4262 /* XXX Print screen */
4268 /* compatibility(ATARI) */
4269 move(term, 0, 0, 0);
4270 erase_lots(term, FALSE, FALSE, TRUE);
4274 /* compatibility(ATARI) */
4275 if (term->curs.y <= term->marg_b)
4276 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4279 /* compatibility(ATARI) */
4280 if (term->curs.y <= term->marg_b)
4281 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4284 /* compatibility(ATARI) */
4285 term->termstate = VT52_FG;
4288 /* compatibility(ATARI) */
4289 term->termstate = VT52_BG;
4292 /* compatibility(ATARI) */
4293 erase_lots(term, FALSE, TRUE, FALSE);
4297 /* compatibility(ATARI) */
4298 term->cursor_on = TRUE;
4301 /* compatibility(ATARI) */
4302 term->cursor_on = FALSE;
4304 /* case 'j': Save cursor position - broken on ST */
4305 /* case 'k': Restore cursor position */
4307 /* compatibility(ATARI) */
4308 erase_lots(term, TRUE, TRUE, TRUE);
4310 term->wrapnext = FALSE;
4313 /* compatibility(ATARI) */
4314 erase_lots(term, TRUE, TRUE, FALSE);
4317 /* compatibility(ATARI) */
4318 term->curr_attr |= ATTR_REVERSE;
4321 /* compatibility(ATARI) */
4322 term->curr_attr &= ~ATTR_REVERSE;
4324 case 'v': /* wrap Autowrap on - Wyse style */
4325 /* compatibility(ATARI) */
4328 case 'w': /* Autowrap off */
4329 /* compatibility(ATARI) */
4334 /* compatibility(OTHER) */
4335 term->vt52_bold = FALSE;
4336 term->curr_attr = ATTR_DEFAULT;
4337 set_erase_char(term);
4340 /* compatibility(VI50) */
4341 term->curr_attr |= ATTR_UNDER;
4344 /* compatibility(VI50) */
4345 term->curr_attr &= ~ATTR_UNDER;
4348 /* compatibility(VI50) */
4349 term->vt52_bold = TRUE;
4350 term->curr_attr |= ATTR_BOLD;
4353 /* compatibility(VI50) */
4354 term->vt52_bold = FALSE;
4355 term->curr_attr &= ~ATTR_BOLD;
4361 term->termstate = VT52_Y2;
4362 move(term, term->curs.x, c - ' ', 0);
4365 term->termstate = TOPLEVEL;
4366 move(term, c - ' ', term->curs.y, 0);
4371 term->termstate = TOPLEVEL;
4372 term->curr_attr &= ~ATTR_FGMASK;
4373 term->curr_attr &= ~ATTR_BOLD;
4374 term->curr_attr |= (c & 0xF) << ATTR_FGSHIFT;
4375 set_erase_char(term);
4378 term->termstate = TOPLEVEL;
4379 term->curr_attr &= ~ATTR_BGMASK;
4380 term->curr_attr &= ~ATTR_BLINK;
4381 term->curr_attr |= (c & 0xF) << ATTR_BGSHIFT;
4382 set_erase_char(term);
4385 default: break; /* placate gcc warning about enum use */
4387 if (term->selstate != NO_SELECTION) {
4388 pos cursplus = term->curs;
4390 check_selection(term, term->curs, cursplus);
4394 term_print_flush(term);
4395 if (term->cfg.logflush)
4396 logflush(term->logctx);
4400 * To prevent having to run the reasonably tricky bidi algorithm
4401 * too many times, we maintain a cache of the last lineful of data
4402 * fed to the algorithm on each line of the display.
4404 static int term_bidi_cache_hit(Terminal *term, int line,
4405 termchar *lbefore, int width)
4409 if (!term->pre_bidi_cache)
4410 return FALSE; /* cache doesn't even exist yet! */
4412 if (line >= term->bidi_cache_size)
4413 return FALSE; /* cache doesn't have this many lines */
4415 if (!term->pre_bidi_cache[line].chars)
4416 return FALSE; /* cache doesn't contain _this_ line */
4418 if (term->pre_bidi_cache[line].width != width)
4419 return FALSE; /* line is wrong width */
4421 for (i = 0; i < width; i++)
4422 if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i))
4423 return FALSE; /* line doesn't match cache */
4425 return TRUE; /* it didn't match. */
4428 static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore,
4429 termchar *lafter, bidi_char *wcTo,
4430 int width, int size)
4434 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
4435 int j = term->bidi_cache_size;
4436 term->bidi_cache_size = line+1;
4437 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
4438 term->bidi_cache_size,
4439 struct bidi_cache_entry);
4440 term->post_bidi_cache = sresize(term->post_bidi_cache,
4441 term->bidi_cache_size,
4442 struct bidi_cache_entry);
4443 while (j < term->bidi_cache_size) {
4444 term->pre_bidi_cache[j].chars =
4445 term->post_bidi_cache[j].chars = NULL;
4446 term->pre_bidi_cache[j].width =
4447 term->post_bidi_cache[j].width = -1;
4448 term->pre_bidi_cache[j].forward =
4449 term->post_bidi_cache[j].forward = NULL;
4450 term->pre_bidi_cache[j].backward =
4451 term->post_bidi_cache[j].backward = NULL;
4456 sfree(term->pre_bidi_cache[line].chars);
4457 sfree(term->post_bidi_cache[line].chars);
4458 sfree(term->post_bidi_cache[line].forward);
4459 sfree(term->post_bidi_cache[line].backward);
4461 term->pre_bidi_cache[line].width = width;
4462 term->pre_bidi_cache[line].chars = snewn(size, termchar);
4463 term->post_bidi_cache[line].width = width;
4464 term->post_bidi_cache[line].chars = snewn(size, termchar);
4465 term->post_bidi_cache[line].forward = snewn(width, int);
4466 term->post_bidi_cache[line].backward = snewn(width, int);
4468 memcpy(term->pre_bidi_cache[line].chars, lbefore, size * TSIZE);
4469 memcpy(term->post_bidi_cache[line].chars, lafter, size * TSIZE);
4470 memset(term->post_bidi_cache[line].forward, 0, width * sizeof(int));
4471 memset(term->post_bidi_cache[line].backward, 0, width * sizeof(int));
4473 for (i = 0; i < width; i++) {
4474 int p = wcTo[i].index;
4476 assert(0 <= p && p < width);
4478 term->post_bidi_cache[line].backward[i] = p;
4479 term->post_bidi_cache[line].forward[p] = i;
4484 * Prepare the bidi information for a screen line. Returns the
4485 * transformed list of termchars, or NULL if no transformation at
4486 * all took place (because bidi is disabled). If return was
4487 * non-NULL, auxiliary information such as the forward and reverse
4488 * mappings of permutation position are available in
4489 * term->post_bidi_cache[scr_y].*.
4491 static termchar *term_bidi_line(Terminal *term, struct termline *ldata,
4497 /* Do Arabic shaping and bidi. */
4498 if(!term->cfg.bidi || !term->cfg.arabicshaping) {
4500 if (!term_bidi_cache_hit(term, scr_y, ldata->chars, term->cols)) {
4502 if (term->wcFromTo_size < term->cols) {
4503 term->wcFromTo_size = term->cols;
4504 term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size,
4506 term->wcTo = sresize(term->wcTo, term->wcFromTo_size,
4510 for(it=0; it<term->cols ; it++)
4512 unsigned long uc = (ldata->chars[it].chr);
4514 switch (uc & CSET_MASK) {
4516 if (!term->cfg.rawcnp) {
4517 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4521 uc = term->ucsdata->unitab_line[uc & 0xFF];
4524 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4527 switch (uc & CSET_MASK) {
4529 uc = term->ucsdata->unitab_font[uc & 0xFF];
4532 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4536 term->wcFrom[it].origwc = term->wcFrom[it].wc =
4538 term->wcFrom[it].index = it;
4542 do_bidi(term->wcFrom, term->cols);
4544 /* this is saved iff done from inside the shaping */
4545 if(!term->cfg.bidi && term->cfg.arabicshaping)
4546 for(it=0; it<term->cols; it++)
4547 term->wcTo[it] = term->wcFrom[it];
4549 if(!term->cfg.arabicshaping)
4550 do_shape(term->wcFrom, term->wcTo, term->cols);
4552 if (term->ltemp_size < ldata->size) {
4553 term->ltemp_size = ldata->size;
4554 term->ltemp = sresize(term->ltemp, term->ltemp_size,
4558 memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE);
4560 for(it=0; it<term->cols ; it++)
4562 term->ltemp[it] = ldata->chars[term->wcTo[it].index];
4563 if (term->ltemp[it].cc_next)
4564 term->ltemp[it].cc_next -=
4565 it - term->wcTo[it].index;
4567 if (term->wcTo[it].origwc != term->wcTo[it].wc)
4568 term->ltemp[it].chr = term->wcTo[it].wc;
4570 term_bidi_cache_store(term, scr_y, ldata->chars,
4571 term->ltemp, term->wcTo,
4572 term->cols, ldata->size);
4574 lchars = term->ltemp;
4576 lchars = term->post_bidi_cache[scr_y].chars;
4586 * Given a context, update the window. Out of paranoia, we don't
4587 * allow WM_PAINT responses to do scrolling optimisations.
4589 static void do_paint(Terminal *term, Context ctx, int may_optimise)
4591 int i, j, our_curs_y, our_curs_x;
4596 #ifdef OPTIMISE_SCROLL
4597 struct scrollregion *sr;
4598 #endif /* OPTIMISE_SCROLL */
4602 ch = snewn(chlen, wchar_t);
4604 newline = snewn(term->cols, termchar);
4606 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4609 * screen array, disptop, scrtop,
4611 * cfg.blinkpc, blink_is_real, tblinker,
4612 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4615 /* Has the cursor position or type changed ? */
4616 if (term->cursor_on) {
4617 if (term->has_focus) {
4618 if (term->cblinker || !term->cfg.blink_cur)
4619 cursor = TATTR_ACTCURS;
4623 cursor = TATTR_PASCURS;
4625 cursor |= TATTR_RIGHTCURS;
4628 our_curs_y = term->curs.y - term->disptop;
4631 * Adjust the cursor position:
4633 * - in the case where it's resting on the right-hand half
4634 * of a CJK wide character. xterm's behaviour here,
4635 * which seems adequate to me, is to display the cursor
4636 * covering the _whole_ character, exactly as if it were
4637 * one space to the left.
4639 termline *ldata = lineptr(term->curs.y);
4642 our_curs_x = term->curs.x;
4644 if ( (lchars = term_bidi_line(term, ldata, our_curs_y)) != NULL) {
4645 our_curs_x = term->post_bidi_cache[our_curs_y].forward[our_curs_x];
4647 lchars = ldata->chars;
4649 if (our_curs_x > 0 &&
4650 lchars[our_curs_x].chr == UCSWIDE)
4657 * If the cursor is not where it was last time we painted, and
4658 * its previous position is visible on screen, invalidate its
4659 * previous position.
4661 if (term->dispcursy >= 0 &&
4662 (term->curstype != cursor ||
4663 term->dispcursy != our_curs_y ||
4664 term->dispcursx != our_curs_x)) {
4665 termchar *dispcurs = term->disptext[term->dispcursy]->chars +
4668 if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE)
4669 dispcurs[-1].attr |= ATTR_INVALID;
4670 if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE)
4671 dispcurs[1].attr |= ATTR_INVALID;
4672 dispcurs->attr |= ATTR_INVALID;
4676 term->dispcursx = term->dispcursy = -1;
4678 #ifdef OPTIMISE_SCROLL
4680 sr = term->scrollhead;
4682 struct scrollregion *next = sr->next;
4683 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
4687 term->scrollhead = term->scrolltail = NULL;
4688 #endif /* OPTIMISE_SCROLL */
4690 /* The normal screen data */
4691 for (i = 0; i < term->rows; i++) {
4694 int dirty_line, dirty_run, selected;
4695 unsigned long attr = 0, cset = 0;
4696 int updated_line = 0;
4699 int last_run_dirty = 0;
4700 int laststart, dirtyrect;
4703 scrpos.y = i + term->disptop;
4704 ldata = lineptr(scrpos.y);
4706 /* Do Arabic shaping and bidi. */
4707 lchars = term_bidi_line(term, ldata, i);
4709 backward = term->post_bidi_cache[i].backward;
4711 lchars = ldata->chars;
4716 * First loop: work along the line deciding what we want
4717 * each character cell to look like.
4719 for (j = 0; j < term->cols; j++) {
4720 unsigned long tattr, tchar;
4721 termchar *d = lchars + j;
4722 scrpos.x = backward ? backward[j] : j;
4727 if (!term->cfg.ansi_colour)
4728 tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) |
4729 ATTR_DEFFG | ATTR_DEFBG;
4731 if (!term->cfg.xterm_256_colour) {
4733 colour = (tattr & ATTR_FGMASK) >> ATTR_FGSHIFT;
4734 if (colour >= 16 && colour < 256)
4735 tattr = (tattr &~ ATTR_FGMASK) | ATTR_DEFFG;
4736 colour = (tattr & ATTR_BGMASK) >> ATTR_BGSHIFT;
4737 if (colour >= 16 && colour < 256)
4738 tattr = (tattr &~ ATTR_BGMASK) | ATTR_DEFBG;
4741 switch (tchar & CSET_MASK) {
4743 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4746 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4749 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
4752 if (j < term->cols-1 && d[1].chr == UCSWIDE)
4755 /* Video reversing things */
4756 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
4757 if (term->seltype == LEXICOGRAPHIC)
4758 selected = (posle(term->selstart, scrpos) &&
4759 poslt(scrpos, term->selend));
4761 selected = (posPle(term->selstart, scrpos) &&
4762 posPlt(scrpos, term->selend));
4766 ^ (selected ? ATTR_REVERSE : 0));
4768 /* 'Real' blinking ? */
4769 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
4770 if (term->has_focus && term->tblinker) {
4771 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
4773 tattr &= ~ATTR_BLINK;
4777 * Check the font we'll _probably_ be using to see if
4778 * the character is wide when we don't want it to be.
4780 if (tchar != term->disptext[i]->chars[j].chr ||
4781 tattr != (term->disptext[i]->chars[j].attr &~
4782 (ATTR_NARROW | DATTR_MASK))) {
4783 if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2)
4784 tattr |= ATTR_NARROW;
4785 } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW)
4786 tattr |= ATTR_NARROW;
4788 if (i == our_curs_y && j == our_curs_x) {
4790 term->curstype = cursor;
4791 term->dispcursx = j;
4792 term->dispcursy = i;
4796 newline[j].attr = tattr;
4797 newline[j].chr = tchar;
4798 /* Combining characters are still read from lchars */
4799 newline[j].cc_next = 0;
4803 * Now loop over the line again, noting where things have
4806 * During this loop, we keep track of where we last saw
4807 * DATTR_STARTRUN. Any mismatch automatically invalidates
4808 * _all_ of the containing run that was last printed: that
4809 * is, any rectangle that was drawn in one go in the
4810 * previous update should be either left completely alone
4811 * or overwritten in its entirety. This, along with the
4812 * expectation that front ends clip all text runs to their
4813 * bounding rectangle, should solve any possible problems
4814 * with fonts that overflow their character cells.
4818 for (j = 0; j < term->cols; j++) {
4819 if (term->disptext[i]->chars[j].attr & DATTR_STARTRUN) {
4824 if (term->disptext[i]->chars[j].chr != newline[j].chr ||
4825 (term->disptext[i]->chars[j].attr &~ DATTR_MASK)
4826 != newline[j].attr) {
4830 for (k = laststart; k < j; k++)
4831 term->disptext[i]->chars[k].attr |= ATTR_INVALID;
4838 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4842 * Finally, loop once more and actually do the drawing.
4844 dirty_run = dirty_line = (ldata->lattr !=
4845 term->disptext[i]->lattr);
4846 term->disptext[i]->lattr = ldata->lattr;
4848 for (j = 0; j < term->cols; j++) {
4849 unsigned long tattr, tchar;
4850 int break_run, do_copy;
4851 termchar *d = lchars + j;
4853 tattr = newline[j].attr;
4854 tchar = newline[j].chr;
4856 if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE)
4859 break_run = ((tattr ^ attr) & term->attr_mask) != 0;
4861 /* Special hack for VT100 Linedraw glyphs */
4862 if (tchar >= 0x23BA && tchar <= 0x23BD)
4866 * Separate out sequences of characters that have the
4867 * same CSET, if that CSET is a magic one.
4869 if (CSET_OF(tchar) != cset)
4873 * Break on both sides of any combined-character cell.
4875 if (d->cc_next != 0 ||
4876 (j > 0 && d[-1].cc_next != 0))
4879 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
4880 if (term->disptext[i]->chars[j].chr == tchar &&
4881 (term->disptext[i]->chars[j].attr &~ DATTR_MASK) == tattr)
4883 else if (!dirty_run && ccount == 1)
4888 if ((dirty_run || last_run_dirty) && ccount > 0) {
4889 do_text(ctx, start, i, ch, ccount, attr,
4891 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
4892 do_cursor(ctx, start, i, ch, ccount, attr,
4900 cset = CSET_OF(tchar);
4901 if (term->ucsdata->dbcs_screenfont)
4902 last_run_dirty = dirty_run;
4903 dirty_run = dirty_line;
4907 if (!termchars_equal_override(&term->disptext[i]->chars[j],
4913 if (ccount >= chlen) {
4914 chlen = ccount + 256;
4915 ch = sresize(ch, chlen, wchar_t);
4917 ch[ccount++] = (wchar_t) tchar;
4922 while (dd->cc_next) {
4923 unsigned long schar;
4928 switch (schar & CSET_MASK) {
4930 schar = term->ucsdata->unitab_line[schar & 0xFF];
4933 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
4936 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
4940 if (ccount >= chlen) {
4941 chlen = ccount + 256;
4942 ch = sresize(ch, chlen, wchar_t);
4944 ch[ccount++] = (wchar_t) schar;
4947 attr |= TATTR_COMBINING;
4951 copy_termchar(term->disptext[i], j, d);
4952 term->disptext[i]->chars[j].chr = tchar;
4953 term->disptext[i]->chars[j].attr = tattr;
4955 term->disptext[i]->chars[j].attr |= DATTR_STARTRUN;
4958 /* If it's a wide char step along to the next one. */
4959 if (tattr & ATTR_WIDE) {
4960 if (++j < term->cols) {
4963 * By construction above, the cursor should not
4964 * be on the right-hand half of this character.
4967 assert(!(i == our_curs_y && j == our_curs_x));
4968 if (!termchars_equal(&term->disptext[i]->chars[j], d))
4970 copy_termchar(term->disptext[i], j, d);
4974 if (dirty_run && ccount > 0) {
4975 do_text(ctx, start, i, ch, ccount, attr,
4977 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
4978 do_cursor(ctx, start, i, ch, ccount, attr,
4992 * Invalidate the whole screen so it will be repainted in full.
4994 void term_invalidate(Terminal *term)
4998 for (i = 0; i < term->rows; i++)
4999 for (j = 0; j < term->cols; j++)
5000 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5002 term_schedule_update(term);
5006 * Paint the window in response to a WM_PAINT message.
5008 void term_paint(Terminal *term, Context ctx,
5009 int left, int top, int right, int bottom, int immediately)
5012 if (left < 0) left = 0;
5013 if (top < 0) top = 0;
5014 if (right >= term->cols) right = term->cols-1;
5015 if (bottom >= term->rows) bottom = term->rows-1;
5017 for (i = top; i <= bottom && i < term->rows; i++) {
5018 if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM)
5019 for (j = left; j <= right && j < term->cols; j++)
5020 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5022 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
5023 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5027 do_paint (term, ctx, FALSE);
5029 term_schedule_update(term);
5034 * Attempt to scroll the scrollback. The second parameter gives the
5035 * position we want to scroll to; the first is +1 to denote that
5036 * this position is relative to the beginning of the scrollback, -1
5037 * to denote it is relative to the end, and 0 to denote that it is
5038 * relative to the current position.
5040 void term_scroll(Terminal *term, int rel, int where)
5042 int sbtop = -sblines(term);
5043 #ifdef OPTIMISE_SCROLL
5044 int olddisptop = term->disptop;
5046 #endif /* OPTIMISE_SCROLL */
5048 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
5049 if (term->disptop < sbtop)
5050 term->disptop = sbtop;
5051 if (term->disptop > 0)
5054 #ifdef OPTIMISE_SCROLL
5055 shift = (term->disptop - olddisptop);
5056 if (shift < term->rows && shift > -term->rows)
5057 scroll_display(term, 0, term->rows - 1, shift);
5058 #endif /* OPTIMISE_SCROLL */
5063 * Helper routine for clipme(): growing buffer.
5066 int buflen; /* amount of allocated space in textbuf/attrbuf */
5067 int bufpos; /* amount of actual data */
5068 wchar_t *textbuf; /* buffer for copied text */
5069 wchar_t *textptr; /* = textbuf + bufpos (current insertion point) */
5070 int *attrbuf; /* buffer for copied attributes */
5071 int *attrptr; /* = attrbuf + bufpos */
5074 static void clip_addchar(clip_workbuf *b, wchar_t chr, int attr)
5076 if (b->bufpos >= b->buflen) {
5078 b->textbuf = sresize(b->textbuf, b->buflen, wchar_t);
5079 b->textptr = b->textbuf + b->bufpos;
5080 b->attrbuf = sresize(b->attrbuf, b->buflen, int);
5081 b->attrptr = b->attrbuf + b->bufpos;
5083 *b->textptr++ = chr;
5084 *b->attrptr++ = attr;
5088 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
5096 buf.textptr = buf.textbuf = snewn(buf.buflen, wchar_t);
5097 buf.attrptr = buf.attrbuf = snewn(buf.buflen, int);
5099 old_top_x = top.x; /* needed for rect==1 */
5101 while (poslt(top, bottom)) {
5103 termline *ldata = lineptr(top.y);
5107 * nlpos will point at the maximum position on this line we
5108 * should copy up to. So we start it at the end of the
5112 nlpos.x = term->cols;
5115 * ... move it backwards if there's unused space at the end
5116 * of the line (and also set `nl' if this is the case,
5117 * because in normal selection mode this means we need a
5118 * newline at the end)...
5120 if (!(ldata->lattr & LATTR_WRAPPED)) {
5122 IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) &&
5123 !ldata->chars[nlpos.x - 1].cc_next &&
5126 if (poslt(nlpos, bottom))
5128 } else if (ldata->lattr & LATTR_WRAPPED2) {
5129 /* Ignore the last char on the line in a WRAPPED2 line. */
5134 * ... and then clip it to the terminal x coordinate if
5135 * we're doing rectangular selection. (In this case we
5136 * still did the above, so that copying e.g. the right-hand
5137 * column from a table doesn't fill with spaces on the
5141 if (nlpos.x > bottom.x)
5143 nl = (top.y < bottom.y);
5146 while (poslt(top, bottom) && poslt(top, nlpos)) {
5149 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
5151 wchar_t cbuf[16], *p;
5155 if (ldata->chars[x].chr == UCSWIDE) {
5161 int uc = ldata->chars[x].chr;
5162 attr = ldata->chars[x].attr;
5164 switch (uc & CSET_MASK) {
5166 if (!term->cfg.rawcnp) {
5167 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5171 uc = term->ucsdata->unitab_line[uc & 0xFF];
5174 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5177 switch (uc & CSET_MASK) {
5179 uc = term->ucsdata->unitab_font[uc & 0xFF];
5182 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5186 set = (uc & CSET_MASK);
5187 c = (uc & ~CSET_MASK);
5191 if (DIRECT_FONT(uc)) {
5192 if (c >= ' ' && c != 0x7F) {
5196 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
5198 buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr);
5199 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
5203 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
5207 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
5214 for (p = cbuf; *p; p++)
5215 clip_addchar(&buf, *p, attr);
5217 if (ldata->chars[x].cc_next)
5218 x += ldata->chars[x].cc_next;
5226 for (i = 0; i < sel_nl_sz; i++)
5227 clip_addchar(&buf, sel_nl[i], 0);
5230 top.x = rect ? old_top_x : 0;
5234 #if SELECTION_NUL_TERMINATED
5235 clip_addchar(&buf, 0, 0);
5237 /* Finally, transfer all that to the clipboard. */
5238 write_clip(term->frontend, buf.textbuf, buf.attrbuf, buf.bufpos, desel);
5243 void term_copyall(Terminal *term)
5247 tree234 *screen = term->screen;
5248 top.y = -sblines(term);
5250 bottom.y = find_last_nonempty_line(term, screen);
5251 bottom.x = term->cols;
5252 clipme(term, top, bottom, 0, TRUE);
5256 * The wordness array is mainly for deciding the disposition of the
5257 * US-ASCII characters.
5259 static int wordtype(Terminal *term, int uc)
5262 int start, end, ctype;
5264 static const struct ucsword ucs_words[] = {
5270 0x037e, 0x037e, 1}, /* Greek question mark */
5272 0x0387, 0x0387, 1}, /* Greek ano teleia */
5274 0x055a, 0x055f, 1}, /* Armenian punctuation */
5276 0x0589, 0x0589, 1}, /* Armenian full stop */
5278 0x0700, 0x070d, 1}, /* Syriac punctuation */
5280 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5282 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5284 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5286 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5288 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5290 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5292 0x2000, 0x200a, 0}, /* Various spaces */
5294 0x2070, 0x207f, 2}, /* superscript */
5296 0x2080, 0x208f, 2}, /* subscript */
5298 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5300 0x3000, 0x3000, 0}, /* ideographic space */
5302 0x3001, 0x3020, 1}, /* ideographic punctuation */
5304 0x303f, 0x309f, 3}, /* Hiragana */
5306 0x30a0, 0x30ff, 3}, /* Katakana */
5308 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5310 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5312 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5314 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5316 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5318 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5320 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5322 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5324 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5328 const struct ucsword *wptr;
5330 switch (uc & CSET_MASK) {
5332 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5335 uc = term->ucsdata->unitab_line[uc & 0xFF];
5338 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5341 switch (uc & CSET_MASK) {
5343 uc = term->ucsdata->unitab_font[uc & 0xFF];
5346 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5350 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5351 * fail as there's such a thing as a double width space. :-(
5353 if (term->ucsdata->dbcs_screenfont &&
5354 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5358 return term->wordness[uc];
5360 for (wptr = ucs_words; wptr->start; wptr++) {
5361 if (uc >= wptr->start && uc <= wptr->end)
5369 * Spread the selection outwards according to the selection mode.
5371 static pos sel_spread_half(Terminal *term, pos p, int dir)
5375 int topy = -sblines(term);
5377 ldata = lineptr(p.y);
5379 switch (term->selmode) {
5382 * In this mode, every character is a separate unit, except
5383 * for runs of spaces at the end of a non-wrapping line.
5385 if (!(ldata->lattr & LATTR_WRAPPED)) {
5386 termchar *q = ldata->chars + term->cols;
5387 while (q > ldata->chars &&
5388 IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next)
5390 if (q == ldata->chars + term->cols)
5392 if (p.x >= q - ldata->chars)
5393 p.x = (dir == -1 ? q - ldata->chars : term->cols - 1);
5398 * In this mode, the units are maximal runs of characters
5399 * whose `wordness' has the same value.
5401 wvalue = wordtype(term, UCSGET(ldata->chars, p.x));
5404 int maxcols = (ldata->lattr & LATTR_WRAPPED2 ?
5405 term->cols-1 : term->cols);
5406 if (p.x < maxcols-1) {
5407 if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue)
5412 if (ldata->lattr & LATTR_WRAPPED) {
5414 ldata2 = lineptr(p.y+1);
5415 if (wordtype(term, UCSGET(ldata2->chars, 0))
5432 if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue)
5441 ldata2 = lineptr(p.y-1);
5442 maxcols = (ldata2->lattr & LATTR_WRAPPED2 ?
5443 term->cols-1 : term->cols);
5444 if (ldata2->lattr & LATTR_WRAPPED) {
5445 if (wordtype(term, UCSGET(ldata2->chars, maxcols-1))
5463 * In this mode, every line is a unit.
5465 p.x = (dir == -1 ? 0 : term->cols - 1);
5473 static void sel_spread(Terminal *term)
5475 if (term->seltype == LEXICOGRAPHIC) {
5476 term->selstart = sel_spread_half(term, term->selstart, -1);
5477 decpos(term->selend);
5478 term->selend = sel_spread_half(term, term->selend, +1);
5479 incpos(term->selend);
5483 void term_do_paste(Terminal *term)
5488 get_clip(term->frontend, &data, &len);
5489 if (data && len > 0) {
5492 term_seen_key_event(term); /* pasted data counts */
5494 if (term->paste_buffer)
5495 sfree(term->paste_buffer);
5496 term->paste_pos = term->paste_hold = term->paste_len = 0;
5497 term->paste_buffer = snewn(len, wchar_t);
5500 while (p < data + len) {
5501 while (p < data + len &&
5502 !(p <= data + len - sel_nl_sz &&
5503 !memcmp(p, sel_nl, sizeof(sel_nl))))
5508 for (i = 0; i < p - q; i++) {
5509 term->paste_buffer[term->paste_len++] = q[i];
5513 if (p <= data + len - sel_nl_sz &&
5514 !memcmp(p, sel_nl, sizeof(sel_nl))) {
5515 term->paste_buffer[term->paste_len++] = '\015';
5521 /* Assume a small paste will be OK in one go. */
5522 if (term->paste_len < 256) {
5524 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
5525 if (term->paste_buffer)
5526 sfree(term->paste_buffer);
5527 term->paste_buffer = 0;
5528 term->paste_pos = term->paste_hold = term->paste_len = 0;
5531 get_clip(term->frontend, NULL, NULL);
5534 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
5535 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
5539 int raw_mouse = (term->xterm_mouse &&
5540 !term->cfg.no_mouse_rep &&
5541 !(term->cfg.mouse_override && shift));
5542 int default_seltype;
5546 if (a == MA_DRAG && !raw_mouse)
5547 term_scroll(term, 0, -1);
5549 if (y >= term->rows) {
5551 if (a == MA_DRAG && !raw_mouse)
5552 term_scroll(term, 0, +1);
5561 if (x >= term->cols)
5564 selpoint.y = y + term->disptop;
5565 ldata = lineptr(selpoint.y);
5567 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM)
5571 * Transform x through the bidi algorithm to find the _logical_
5572 * click point from the physical one.
5574 if (term_bidi_line(term, ldata, y) != NULL) {
5575 x = term->post_bidi_cache[y].backward[x];
5582 int encstate = 0, r, c;
5589 encstate = 0x20; /* left button down */
5600 case MBT_WHEEL_DOWN:
5603 default: break; /* placate gcc warning about enum use */
5607 if (term->xterm_mouse == 1)
5613 term->mouse_is_down = 0;
5616 if (term->mouse_is_down == braw)
5618 term->mouse_is_down = braw;
5620 default: break; /* placate gcc warning about enum use */
5629 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
5630 ldisc_send(term->ldisc, abuf, 6, 0);
5636 * Set the selection type (rectangular or normal) at the start
5637 * of a selection attempt, from the state of Alt.
5639 if (!alt ^ !term->cfg.rect_select)
5640 default_seltype = RECTANGULAR;
5642 default_seltype = LEXICOGRAPHIC;
5644 if (term->selstate == NO_SELECTION) {
5645 term->seltype = default_seltype;
5648 if (bcooked == MBT_SELECT && a == MA_CLICK) {
5650 term->selstate = ABOUT_TO;
5651 term->seltype = default_seltype;
5652 term->selanchor = selpoint;
5653 term->selmode = SM_CHAR;
5654 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
5656 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
5657 term->selstate = DRAGGING;
5658 term->selstart = term->selanchor = selpoint;
5659 term->selend = term->selstart;
5660 incpos(term->selend);
5662 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
5663 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
5664 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
5666 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
5667 term->selstate == SELECTED) {
5668 if (term->seltype == LEXICOGRAPHIC) {
5670 * For normal selection, we extend by moving
5671 * whichever end of the current selection is closer
5674 if (posdiff(selpoint, term->selstart) <
5675 posdiff(term->selend, term->selstart) / 2) {
5676 term->selanchor = term->selend;
5677 decpos(term->selanchor);
5679 term->selanchor = term->selstart;
5683 * For rectangular selection, we have a choice of
5684 * _four_ places to put selanchor and selpoint: the
5685 * four corners of the selection.
5687 if (2*selpoint.x < term->selstart.x + term->selend.x)
5688 term->selanchor.x = term->selend.x-1;
5690 term->selanchor.x = term->selstart.x;
5692 if (2*selpoint.y < term->selstart.y + term->selend.y)
5693 term->selanchor.y = term->selend.y;
5695 term->selanchor.y = term->selstart.y;
5697 term->selstate = DRAGGING;
5699 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
5700 term->selanchor = selpoint;
5701 term->selstate = DRAGGING;
5702 if (term->seltype == LEXICOGRAPHIC) {
5704 * For normal selection, we set (selstart,selend) to
5705 * (selpoint,selanchor) in some order.
5707 if (poslt(selpoint, term->selanchor)) {
5708 term->selstart = selpoint;
5709 term->selend = term->selanchor;
5710 incpos(term->selend);
5712 term->selstart = term->selanchor;
5713 term->selend = selpoint;
5714 incpos(term->selend);
5718 * For rectangular selection, we may need to
5719 * interchange x and y coordinates (if the user has
5720 * dragged in the -x and +y directions, or vice versa).
5722 term->selstart.x = min(term->selanchor.x, selpoint.x);
5723 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
5724 term->selstart.y = min(term->selanchor.y, selpoint.y);
5725 term->selend.y = max(term->selanchor.y, selpoint.y);
5728 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
5730 if (term->selstate == DRAGGING) {
5732 * We've completed a selection. We now transfer the
5733 * data to the clipboard.
5735 clipme(term, term->selstart, term->selend,
5736 (term->seltype == RECTANGULAR), FALSE);
5737 term->selstate = SELECTED;
5739 term->selstate = NO_SELECTION;
5740 } else if (bcooked == MBT_PASTE
5742 #if MULTICLICK_ONLY_EVENT
5743 || a == MA_2CLK || a == MA_3CLK
5746 request_paste(term->frontend);
5752 void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
5753 unsigned int modifiers, unsigned int flags)
5757 int prependesc = FALSE;
5761 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
5762 for (i = 0; i < tlen; i++)
5763 fprintf(stderr, " %04x", (unsigned)text[i]);
5764 fprintf(stderr, "\n");
5768 if ((flags & PKF_REPEAT) && term->repeat_off)
5771 /* Currently, Meta always just prefixes everything with ESC. */
5772 if (modifiers & PKM_META)
5774 modifiers &= ~PKM_META;
5777 * Alt is only used for Alt+keypad, which isn't supported yet, so
5780 modifiers &= ~PKM_ALT;
5782 /* Standard local function keys */
5783 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
5785 if (keysym == PK_PAGEUP)
5786 /* scroll up one page */;
5787 if (keysym == PK_PAGEDOWN)
5788 /* scroll down on page */;
5789 if (keysym == PK_INSERT)
5790 term_do_paste(term);
5793 if (keysym == PK_PAGEUP)
5794 /* scroll up one line */;
5795 if (keysym == PK_PAGEDOWN)
5796 /* scroll down one line */;
5797 /* Control-Numlock for app-keypad mode switch */
5798 if (keysym == PK_PF1)
5799 term->app_keypad_keys ^= 1;
5803 if (modifiers & PKM_ALT) {
5804 /* Alt+F4 (close) */
5805 /* Alt+Return (full screen) */
5806 /* Alt+Space (system menu) */
5809 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
5810 text[0] >= 0x20 && text[0] <= 0x7e) {
5811 /* ASCII chars + Control */
5812 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
5813 (text[0] >= 0x61 && text[0] <= 0x7a))
5817 * Control-2 should return ^@ (0x00), Control-6 should return
5818 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5819 * the DOS keyboard handling did it, and we have nothing better
5820 * to do with the key combo in question, we'll also map
5821 * Control-Backquote to ^\ (0x1C).
5824 case ' ': text[0] = 0x00; break;
5825 case '-': text[0] = 0x1f; break;
5826 case '/': text[0] = 0x1f; break;
5827 case '2': text[0] = 0x00; break;
5828 case '3': text[0] = 0x1b; break;
5829 case '4': text[0] = 0x1c; break;
5830 case '5': text[0] = 0x1d; break;
5831 case '6': text[0] = 0x1e; break;
5832 case '7': text[0] = 0x1f; break;
5833 case '8': text[0] = 0x7f; break;
5834 case '`': text[0] = 0x1c; break;
5839 /* Nethack keypad */
5840 if (term->cfg.nethack_keypad) {
5843 case PK_KP1: c = 'b'; break;
5844 case PK_KP2: c = 'j'; break;
5845 case PK_KP3: c = 'n'; break;
5846 case PK_KP4: c = 'h'; break;
5847 case PK_KP5: c = '.'; break;
5848 case PK_KP6: c = 'l'; break;
5849 case PK_KP7: c = 'y'; break;
5850 case PK_KP8: c = 'k'; break;
5851 case PK_KP9: c = 'u'; break;
5852 default: break; /* else gcc warns `enum value not used' */
5856 if (modifiers & PKM_CONTROL)
5858 else if (modifiers & PKM_SHIFT)
5866 /* Numeric Keypad */
5867 if (PK_ISKEYPAD(keysym)) {
5871 * In VT400 mode, PFn always emits an escape sequence. In
5872 * Linux and tilde modes, this only happens in app keypad mode.
5874 if (term->cfg.funky_type == FUNKY_VT400 ||
5875 ((term->cfg.funky_type == FUNKY_LINUX ||
5876 term->cfg.funky_type == FUNKY_TILDE) &&
5877 term->app_keypad_keys && !term->cfg.no_applic_k)) {
5879 case PK_PF1: xkey = 'P'; break;
5880 case PK_PF2: xkey = 'Q'; break;
5881 case PK_PF3: xkey = 'R'; break;
5882 case PK_PF4: xkey = 'S'; break;
5883 default: break; /* else gcc warns `enum value not used' */
5886 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
5888 case PK_KP0: xkey = 'p'; break;
5889 case PK_KP1: xkey = 'q'; break;
5890 case PK_KP2: xkey = 'r'; break;
5891 case PK_KP3: xkey = 's'; break;
5892 case PK_KP4: xkey = 't'; break;
5893 case PK_KP5: xkey = 'u'; break;
5894 case PK_KP6: xkey = 'v'; break;
5895 case PK_KP7: xkey = 'w'; break;
5896 case PK_KP8: xkey = 'x'; break;
5897 case PK_KP9: xkey = 'y'; break;
5898 case PK_KPDECIMAL: xkey = 'n'; break;
5899 case PK_KPENTER: xkey = 'M'; break;
5900 default: break; /* else gcc warns `enum value not used' */
5902 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
5904 * xterm can't see the layout of the keypad, so it has
5905 * to rely on the X keysyms returned by the keys.
5906 * Hence, we look at the strings here, not the PuTTY
5907 * keysyms (which describe the layout).
5911 if (modifiers & PKM_SHIFT)
5916 case '/': xkey = 'o'; break;
5917 case '*': xkey = 'j'; break;
5918 case '-': xkey = 'm'; break;
5922 * In all other modes, we try to retain the layout of
5923 * the DEC keypad in application mode.
5927 /* This key covers the '-' and ',' keys on a VT220 */
5928 if (modifiers & PKM_SHIFT)
5929 xkey = 'm'; /* VT220 '-' */
5931 xkey = 'l'; /* VT220 ',' */
5933 case PK_KPMINUS: xkey = 'm'; break;
5934 case PK_KPCOMMA: xkey = 'l'; break;
5935 default: break; /* else gcc warns `enum value not used' */
5940 if (term->vt52_mode) {
5941 if (xkey >= 'P' && xkey <= 'S')
5942 p += sprintf((char *) p, "\x1B%c", xkey);
5944 p += sprintf((char *) p, "\x1B?%c", xkey);
5946 p += sprintf((char *) p, "\x1BO%c", xkey);
5949 /* Not in application mode -- treat the number pad as arrow keys? */
5950 if ((flags & PKF_NUMLOCK) == 0) {
5952 case PK_KP0: keysym = PK_INSERT; break;
5953 case PK_KP1: keysym = PK_END; break;
5954 case PK_KP2: keysym = PK_DOWN; break;
5955 case PK_KP3: keysym = PK_PAGEDOWN; break;
5956 case PK_KP4: keysym = PK_LEFT; break;
5957 case PK_KP5: keysym = PK_REST; break;
5958 case PK_KP6: keysym = PK_RIGHT; break;
5959 case PK_KP7: keysym = PK_HOME; break;
5960 case PK_KP8: keysym = PK_UP; break;
5961 case PK_KP9: keysym = PK_PAGEUP; break;
5962 default: break; /* else gcc warns `enum value not used' */
5967 /* Miscellaneous keys */
5974 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
5975 else if (modifiers == PKM_SHIFT)
5976 /* We do the opposite of what is configured */
5977 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
5983 else if (modifiers == PKM_SHIFT)
5984 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
5987 /* XXX window.c has ctrl+shift+space sending 0xa0 */
5989 if (modifiers == PKM_CONTROL)
5994 case PK_KPENTER: /* Odd keypad modes handled above */
5995 if (modifiers == 0) {
5997 if (term->cr_lf_return)
6001 default: break; /* else gcc warns `enum value not used' */
6004 /* SCO function keys and editing keys */
6005 if (term->cfg.funky_type == FUNKY_SCO) {
6006 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
6007 static char const codes[] =
6008 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
6009 int index = keysym - PK_F1;
6011 if (modifiers & PKM_SHIFT) index += 12;
6012 if (modifiers & PKM_CONTROL) index += 24;
6013 p += sprintf((char *) p, "\x1B[%c", codes[index]);
6016 if (PK_ISEDITING(keysym)) {
6020 case PK_DELETE: *p++ = 0x7f; goto done;
6021 case PK_HOME: xkey = 'H'; break;
6022 case PK_INSERT: xkey = 'L'; break;
6023 case PK_END: xkey = 'F'; break;
6024 case PK_PAGEUP: xkey = 'I'; break;
6025 case PK_PAGEDOWN: xkey = 'G'; break;
6026 default: break; /* else gcc warns `enum value not used' */
6028 p += sprintf((char *) p, "\x1B[%c", xkey);
6032 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
6035 if (term->cfg.funky_type == FUNKY_XTERM) {
6036 /* Xterm shuffles these keys, apparently. */
6038 case PK_HOME: keysym = PK_INSERT; break;
6039 case PK_INSERT: keysym = PK_HOME; break;
6040 case PK_DELETE: keysym = PK_END; break;
6041 case PK_END: keysym = PK_PAGEUP; break;
6042 case PK_PAGEUP: keysym = PK_DELETE; break;
6043 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
6044 default: break; /* else gcc warns `enum value not used' */
6049 if (term->cfg.rxvt_homeend &&
6050 (keysym == PK_HOME || keysym == PK_END)) {
6051 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
6055 if (term->vt52_mode) {
6059 * A real VT52 doesn't have these, and a VT220 doesn't
6060 * send anything for them in VT52 mode.
6063 case PK_HOME: xkey = 'H'; break;
6064 case PK_INSERT: xkey = 'L'; break;
6065 case PK_DELETE: xkey = 'M'; break;
6066 case PK_END: xkey = 'E'; break;
6067 case PK_PAGEUP: xkey = 'I'; break;
6068 case PK_PAGEDOWN: xkey = 'G'; break;
6069 default: xkey=0; break; /* else gcc warns `enum value not used'*/
6071 p += sprintf((char *) p, "\x1B%c", xkey);
6076 case PK_HOME: code = 1; break;
6077 case PK_INSERT: code = 2; break;
6078 case PK_DELETE: code = 3; break;
6079 case PK_END: code = 4; break;
6080 case PK_PAGEUP: code = 5; break;
6081 case PK_PAGEDOWN: code = 6; break;
6082 default: code = 0; break; /* else gcc warns `enum value not used' */
6084 p += sprintf((char *) p, "\x1B[%d~", code);
6088 if (PK_ISFKEY(keysym)) {
6089 /* Map Shift+F1-F10 to F11-F20 */
6090 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
6092 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
6094 /* XXX This overrides the XTERM/VT52 mode below */
6096 if (keysym >= PK_F6) offt++;
6097 if (keysym >= PK_F12) offt++;
6098 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
6099 'P' + keysym - PK_F1 - offt);
6102 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
6103 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
6106 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
6107 if (term->vt52_mode)
6108 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
6110 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
6113 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
6117 if (PK_ISCURSOR(keysym)) {
6121 case PK_UP: xkey = 'A'; break;
6122 case PK_DOWN: xkey = 'B'; break;
6123 case PK_RIGHT: xkey = 'C'; break;
6124 case PK_LEFT: xkey = 'D'; break;
6125 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
6126 default: xkey = 0; break; /* else gcc warns `enum value not used' */
6128 if (term->vt52_mode)
6129 p += sprintf((char *) p, "\x1B%c", xkey);
6131 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
6133 /* Useful mapping of Ctrl-arrows */
6134 if (modifiers == PKM_CONTROL)
6138 p += sprintf((char *) p, "\x1BO%c", xkey);
6140 p += sprintf((char *) p, "\x1B[%c", xkey);
6146 if (p > output || tlen > 0) {
6148 * Interrupt an ongoing paste. I'm not sure
6149 * this is sensible, but for the moment it's
6150 * preferable to having to faff about buffering
6156 * We need not bother about stdin backlogs
6157 * here, because in GUI PuTTY we can't do
6158 * anything about it anyway; there's no means
6159 * of asking Windows to hold off on KEYDOWN
6160 * messages. We _have_ to buffer everything
6163 term_seen_key_event(term);
6167 fprintf(stderr, "sending ESC\n");
6169 ldisc_send(term->ldisc, "\x1b", 1, 1);
6174 fprintf(stderr, "sending %d bytes:", p - output);
6175 for (i = 0; i < p - output; i++)
6176 fprintf(stderr, " %02x", output[i]);
6177 fprintf(stderr, "\n");
6179 ldisc_send(term->ldisc, output, p - output, 1);
6180 } else if (tlen > 0) {
6182 fprintf(stderr, "sending %d unichars:", tlen);
6183 for (i = 0; i < tlen; i++)
6184 fprintf(stderr, " %04x", (unsigned) text[i]);
6185 fprintf(stderr, "\n");
6187 luni_send(term->ldisc, text, tlen, 1);
6192 void term_nopaste(Terminal *term)
6194 if (term->paste_len == 0)
6196 sfree(term->paste_buffer);
6197 term->paste_buffer = NULL;
6198 term->paste_len = 0;
6201 int term_paste_pending(Terminal *term)
6203 return term->paste_len != 0;
6206 void term_paste(Terminal *term)
6208 long now, paste_diff;
6210 if (term->paste_len == 0)
6213 /* Don't wait forever to paste */
6214 if (term->paste_hold) {
6215 now = GETTICKCOUNT();
6216 paste_diff = now - term->last_paste;
6217 if (paste_diff >= 0 && paste_diff < 450)
6220 term->paste_hold = 0;
6222 while (term->paste_pos < term->paste_len) {
6224 while (n + term->paste_pos < term->paste_len) {
6225 if (term->paste_buffer[term->paste_pos + n++] == '\015')
6229 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
6230 term->paste_pos += n;
6232 if (term->paste_pos < term->paste_len) {
6233 term->paste_hold = 1;
6237 sfree(term->paste_buffer);
6238 term->paste_buffer = NULL;
6239 term->paste_len = 0;
6242 static void deselect(Terminal *term)
6244 term->selstate = NO_SELECTION;
6245 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
6248 void term_deselect(Terminal *term)
6254 int term_ldisc(Terminal *term, int option)
6256 if (option == LD_ECHO)
6257 return term->term_echoing;
6258 if (option == LD_EDIT)
6259 return term->term_editing;
6263 int term_data(Terminal *term, int is_stderr, const char *data, int len)
6265 bufchain_add(&term->inbuf, data, len);
6267 if (!term->in_term_out) {
6268 term->in_term_out = TRUE;
6269 term_reset_cblink(term);
6271 * During drag-selects, we do not process terminal input,
6272 * because the user will want the screen to hold still to
6275 if (term->selstate != DRAGGING)
6277 term->in_term_out = FALSE;
6281 * term_out() always completely empties inbuf. Therefore,
6282 * there's no reason at all to return anything other than zero
6283 * from this function, because there _can't_ be a question of
6284 * the remote side needing to wait until term_out() has cleared
6287 * This is a slightly suboptimal way to deal with SSH-2 - in
6288 * principle, the window mechanism would allow us to continue
6289 * to accept data on forwarded ports and X connections even
6290 * while the terminal processing was going slowly - but we
6291 * can't do the 100% right thing without moving the terminal
6292 * processing into a separate thread, and that might hurt
6293 * portability. So we manage stdout buffering the old SSH-1 way:
6294 * if the terminal processing goes slowly, the whole SSH
6295 * connection stops accepting data until it's ready.
6297 * In practice, I can't imagine this causing serious trouble.
6303 * Write untrusted data to the terminal.
6304 * The only control character that should be honoured is \n (which
6305 * will behave as a CRLF).
6307 int term_data_untrusted(Terminal *term, const char *data, int len)
6310 /* FIXME: more sophisticated checking? */
6311 for (i = 0; i < len; i++) {
6312 if (data[i] == '\n')
6313 term_data(term, 1, "\r\n", 2);
6314 else if (data[i] & 0x60)
6315 term_data(term, 1, data + i, 1);
6317 return 0; /* assumes that term_data() always returns 0 */
6320 void term_provide_logctx(Terminal *term, void *logctx)
6322 term->logctx = logctx;
6325 void term_set_focus(Terminal *term, int has_focus)
6327 term->has_focus = has_focus;
6328 term_schedule_cblink(term);
6332 * Provide "auto" settings for remote tty modes, suitable for an
6333 * application with a terminal window.
6335 char *term_get_ttymode(Terminal *term, const char *mode)
6338 if (strcmp(mode, "ERASE") == 0) {
6339 val = term->cfg.bksp_is_delete ? "^?" : "^H";
6341 /* FIXME: perhaps we should set ONLCR based on cfg.lfhascr as well? */
6345 struct term_userpass_state {
6347 int done_prompt; /* printed out prompt yet? */
6348 size_t pos; /* cursor position */
6352 * Process some terminal data in the course of username/password
6355 int term_get_userpass_input(Terminal *term, prompts_t *p,
6356 unsigned char *in, int inlen)
6358 struct term_userpass_state *s = (struct term_userpass_state *)p->data;
6361 * First call. Set some stuff up.
6363 p->data = s = snew(struct term_userpass_state);
6366 /* We only print the `name' caption if we have to... */
6367 if (p->name_reqd && p->name) {
6368 size_t l = strlen(p->name);
6369 term_data_untrusted(term, p->name, l);
6370 if (p->name[l-1] != '\n')
6371 term_data_untrusted(term, "\n", 1);
6373 /* ...but we always print any `instruction'. */
6374 if (p->instruction) {
6375 size_t l = strlen(p->instruction);
6376 term_data_untrusted(term, p->instruction, l);
6377 if (p->instruction[l-1] != '\n')
6378 term_data_untrusted(term, "\n", 1);
6381 * Zero all the results, in case we abort half-way through.
6385 for (i = 0; i < p->n_prompts; i++)
6386 memset(p->prompts[i]->result, 0, p->prompts[i]->result_len);
6390 while (s->curr_prompt < p->n_prompts) {
6392 prompt_t *pr = p->prompts[s->curr_prompt];
6393 int finished_prompt = 0;
6395 if (!s->done_prompt) {
6396 term_data_untrusted(term, pr->prompt, strlen(pr->prompt));
6401 /* Breaking out here ensures that the prompt is printed even
6402 * if we're now waiting for user data. */
6403 if (!in || !inlen) break;
6405 /* FIXME: should we be using local-line-editing code instead? */
6406 while (!finished_prompt && inlen) {
6412 term_data(term, 0, "\r\n", 2);
6413 pr->result[s->pos] = '\0';
6414 pr->result[pr->result_len - 1] = '\0';
6415 /* go to next prompt, if any */
6418 finished_prompt = 1; /* break out */
6424 term_data(term, 0, "\b \b", 3);
6430 while (s->pos > 0) {
6432 term_data(term, 0, "\b \b", 3);
6438 /* Immediate abort. */
6439 term_data(term, 0, "\r\n", 2);
6442 return 0; /* user abort */
6445 * This simplistic check for printability is disabled
6446 * when we're doing password input, because some people
6447 * have control characters in their passwords.
6450 (c >= ' ' && c <= '~') ||
6451 ((unsigned char) c >= 160))
6452 && s->pos < pr->result_len - 1) {
6453 pr->result[s->pos++] = c;
6455 term_data(term, 0, &c, 1);
6463 if (s->curr_prompt < p->n_prompts) {
6464 return -1; /* more data required */
6468 return +1; /* all done */