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_savecurs.x = term->alt_savecurs.y = 0;
1188 term->alt_t = term->marg_t = 0;
1189 if (term->rows != -1)
1190 term->alt_b = term->marg_b = term->rows - 1;
1192 term->alt_b = term->marg_b = 0;
1193 if (term->cols != -1) {
1195 for (i = 0; i < term->cols; i++)
1196 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1198 term->alt_om = term->dec_om = term->cfg.dec_om;
1199 term->alt_ins = term->insert = FALSE;
1200 term->alt_wnext = term->wrapnext =
1201 term->save_wnext = term->alt_save_wnext = FALSE;
1202 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1203 term->alt_cset = term->cset = term->save_cset = term->alt_save_cset = 0;
1204 term->alt_utf = term->utf = term->save_utf = term->alt_save_utf = 0;
1205 term->utf_state = 0;
1206 term->alt_sco_acs = term->sco_acs =
1207 term->save_sco_acs = term->alt_save_sco_acs = 0;
1208 term->cset_attr[0] = term->cset_attr[1] =
1209 term->save_csattr = term->alt_save_csattr = CSET_ASCII;
1211 term->in_vbell = FALSE;
1212 term->cursor_on = 1;
1213 term->big_cursor = 0;
1214 term->default_attr = term->save_attr =
1215 term->alt_save_attr = term->curr_attr = ATTR_DEFAULT;
1216 term->term_editing = term->term_echoing = FALSE;
1217 term->app_cursor_keys = term->cfg.app_cursor;
1218 term->app_keypad_keys = term->cfg.app_keypad;
1219 term->use_bce = term->cfg.bce;
1220 term->blink_is_real = term->cfg.blinktext;
1221 term->erase_char = term->basic_erase_char;
1222 term->alt_which = 0;
1223 term_print_finish(term);
1226 for (i = 0; i < 256; i++)
1227 term->wordness[i] = term->cfg.wordness[i];
1230 swap_screen(term, 1, FALSE, FALSE);
1231 erase_lots(term, FALSE, TRUE, TRUE);
1232 swap_screen(term, 0, FALSE, FALSE);
1234 erase_lots(term, FALSE, TRUE, TRUE);
1235 term->curs.y = find_last_nonempty_line(term, term->screen) + 1;
1236 if (term->curs.y == term->rows) {
1238 scroll(term, 0, term->rows - 1, 1, TRUE);
1244 term_schedule_tblink(term);
1245 term_schedule_cblink(term);
1249 * Force a screen update.
1251 void term_update(Terminal *term)
1255 term->window_update_pending = FALSE;
1257 ctx = get_ctx(term->frontend);
1259 int need_sbar_update = term->seen_disp_event;
1260 if (term->seen_disp_event && term->cfg.scroll_on_disp) {
1261 term->disptop = 0; /* return to main screen */
1262 term->seen_disp_event = 0;
1263 need_sbar_update = TRUE;
1266 if (need_sbar_update)
1268 do_paint(term, ctx, TRUE);
1269 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
1275 * Called from front end when a keypress occurs, to trigger
1276 * anything magical that needs to happen in that situation.
1278 void term_seen_key_event(Terminal *term)
1281 * On any keypress, clear the bell overload mechanism
1282 * completely, on the grounds that large numbers of
1283 * beeps coming from deliberate key action are likely
1284 * to be intended (e.g. beeps from filename completion
1285 * blocking repeatedly).
1287 term->beep_overloaded = FALSE;
1288 while (term->beephead) {
1289 struct beeptime *tmp = term->beephead;
1290 term->beephead = tmp->next;
1293 term->beeptail = NULL;
1297 * Reset the scrollback on keypress, if we're doing that.
1299 if (term->cfg.scroll_on_key) {
1300 term->disptop = 0; /* return to main screen */
1301 seen_disp_event(term);
1306 * Same as power_on(), but an external function.
1308 void term_pwron(Terminal *term, int clear)
1310 power_on(term, clear);
1311 if (term->ldisc) /* cause ldisc to notice changes */
1312 ldisc_send(term->ldisc, NULL, 0, 0);
1318 static void set_erase_char(Terminal *term)
1320 term->erase_char = term->basic_erase_char;
1322 term->erase_char.attr = (term->curr_attr &
1323 (ATTR_FGMASK | ATTR_BGMASK));
1327 * When the user reconfigures us, we need to check the forbidden-
1328 * alternate-screen config option, disable raw mouse mode if the
1329 * user has disabled mouse reporting, and abandon a print job if
1330 * the user has disabled printing.
1332 void term_reconfig(Terminal *term, Config *cfg)
1335 * Before adopting the new config, check all those terminal
1336 * settings which control power-on defaults; and if they've
1337 * changed, we will modify the current state as well as the
1338 * default one. The full list is: Auto wrap mode, DEC Origin
1339 * Mode, BCE, blinking text, character classes.
1341 int reset_wrap, reset_decom, reset_bce, reset_tblink, reset_charclass;
1344 reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode);
1345 reset_decom = (term->cfg.dec_om != cfg->dec_om);
1346 reset_bce = (term->cfg.bce != cfg->bce);
1347 reset_tblink = (term->cfg.blinktext != cfg->blinktext);
1348 reset_charclass = 0;
1349 for (i = 0; i < lenof(term->cfg.wordness); i++)
1350 if (term->cfg.wordness[i] != cfg->wordness[i])
1351 reset_charclass = 1;
1354 * If the bidi or shaping settings have changed, flush the bidi
1357 if (term->cfg.arabicshaping != cfg->arabicshaping ||
1358 term->cfg.bidi != cfg->bidi) {
1359 for (i = 0; i < term->bidi_cache_size; i++) {
1360 sfree(term->pre_bidi_cache[i].chars);
1361 sfree(term->post_bidi_cache[i].chars);
1362 term->pre_bidi_cache[i].width = -1;
1363 term->pre_bidi_cache[i].chars = NULL;
1364 term->post_bidi_cache[i].width = -1;
1365 term->post_bidi_cache[i].chars = NULL;
1369 term->cfg = *cfg; /* STRUCTURE COPY */
1372 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
1374 term->alt_om = term->dec_om = term->cfg.dec_om;
1376 term->use_bce = term->cfg.bce;
1377 set_erase_char(term);
1380 term->blink_is_real = term->cfg.blinktext;
1382 if (reset_charclass)
1383 for (i = 0; i < 256; i++)
1384 term->wordness[i] = term->cfg.wordness[i];
1386 if (term->cfg.no_alt_screen)
1387 swap_screen(term, 0, FALSE, FALSE);
1388 if (term->cfg.no_mouse_rep) {
1389 term->xterm_mouse = 0;
1390 set_raw_mouse_mode(term->frontend, 0);
1392 if (term->cfg.no_remote_charset) {
1393 term->cset_attr[0] = term->cset_attr[1] = CSET_ASCII;
1394 term->sco_acs = term->alt_sco_acs = 0;
1397 if (!*term->cfg.printer) {
1398 term_print_finish(term);
1400 term_schedule_tblink(term);
1401 term_schedule_cblink(term);
1405 * Clear the scrollback.
1407 void term_clrsb(Terminal *term)
1409 unsigned char *line;
1411 while ((line = delpos234(term->scrollback, 0)) != NULL) {
1412 sfree(line); /* this is compressed data, not a termline */
1414 term->tempsblines = 0;
1415 term->alt_sblines = 0;
1420 * Initialise the terminal.
1422 Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
1428 * Allocate a new Terminal structure and initialise the fields
1431 term = snew(Terminal);
1432 term->frontend = frontend;
1433 term->ucsdata = ucsdata;
1434 term->cfg = *mycfg; /* STRUCTURE COPY */
1435 term->logctx = NULL;
1436 term->compatibility_level = TM_PUTTY;
1437 strcpy(term->id_string, "\033[?6c");
1438 term->cblink_pending = term->tblink_pending = FALSE;
1439 term->paste_buffer = NULL;
1440 term->paste_len = 0;
1441 term->last_paste = 0;
1442 bufchain_init(&term->inbuf);
1443 bufchain_init(&term->printer_buf);
1444 term->printing = term->only_printing = FALSE;
1445 term->print_job = NULL;
1446 term->vt52_mode = FALSE;
1447 term->cr_lf_return = FALSE;
1448 term->seen_disp_event = FALSE;
1449 term->xterm_mouse = term->mouse_is_down = FALSE;
1450 term->reset_132 = FALSE;
1451 term->cblinker = term->tblinker = 0;
1452 term->has_focus = 1;
1453 term->repeat_off = FALSE;
1454 term->termstate = TOPLEVEL;
1455 term->selstate = NO_SELECTION;
1458 term->screen = term->alt_screen = term->scrollback = NULL;
1459 term->tempsblines = 0;
1460 term->alt_sblines = 0;
1462 term->disptext = NULL;
1463 term->dispcursx = term->dispcursy = -1;
1466 term->rows = term->cols = -1;
1467 power_on(term, TRUE);
1468 term->beephead = term->beeptail = NULL;
1469 #ifdef OPTIMISE_SCROLL
1470 term->scrollhead = term->scrolltail = NULL;
1471 #endif /* OPTIMISE_SCROLL */
1473 term->lastbeep = FALSE;
1474 term->beep_overloaded = FALSE;
1475 term->attr_mask = 0xffffffff;
1476 term->resize_fn = NULL;
1477 term->resize_ctx = NULL;
1478 term->in_term_out = FALSE;
1480 term->ltemp_size = 0;
1481 term->wcFrom = NULL;
1483 term->wcFromTo_size = 0;
1485 term->window_update_pending = FALSE;
1487 term->bidi_cache_size = 0;
1488 term->pre_bidi_cache = term->post_bidi_cache = NULL;
1491 term->basic_erase_char.chr = CSET_ASCII | ' ';
1492 term->basic_erase_char.attr = ATTR_DEFAULT;
1493 term->basic_erase_char.cc_next = 0;
1494 term->erase_char = term->basic_erase_char;
1499 void term_free(Terminal *term)
1502 struct beeptime *beep;
1505 while ((line = delpos234(term->scrollback, 0)) != NULL)
1506 sfree(line); /* compressed data, not a termline */
1507 freetree234(term->scrollback);
1508 while ((line = delpos234(term->screen, 0)) != NULL)
1510 freetree234(term->screen);
1511 while ((line = delpos234(term->alt_screen, 0)) != NULL)
1513 freetree234(term->alt_screen);
1514 if (term->disptext) {
1515 for (i = 0; i < term->rows; i++)
1516 freeline(term->disptext[i]);
1518 sfree(term->disptext);
1519 while (term->beephead) {
1520 beep = term->beephead;
1521 term->beephead = beep->next;
1524 bufchain_clear(&term->inbuf);
1526 printer_finish_job(term->print_job);
1527 bufchain_clear(&term->printer_buf);
1528 sfree(term->paste_buffer);
1530 sfree(term->wcFrom);
1533 for (i = 0; i < term->bidi_cache_size; i++) {
1534 sfree(term->pre_bidi_cache[i].chars);
1535 sfree(term->post_bidi_cache[i].chars);
1537 sfree(term->pre_bidi_cache);
1538 sfree(term->post_bidi_cache);
1540 expire_timer_context(term);
1546 * Set up the terminal for a given size.
1548 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
1551 termline **newdisp, *line;
1552 int i, j, oldrows = term->rows;
1554 int save_alt_which = term->alt_which;
1556 if (newrows == term->rows && newcols == term->cols &&
1557 newsavelines == term->savelines)
1558 return; /* nothing to do */
1560 /* Behave sensibly if we're given zero (or negative) rows/cols */
1562 if (newrows < 1) newrows = 1;
1563 if (newcols < 1) newcols = 1;
1566 swap_screen(term, 0, FALSE, FALSE);
1568 term->alt_t = term->marg_t = 0;
1569 term->alt_b = term->marg_b = newrows - 1;
1571 if (term->rows == -1) {
1572 term->scrollback = newtree234(NULL);
1573 term->screen = newtree234(NULL);
1574 term->tempsblines = 0;
1579 * Resize the screen and scrollback. We only need to shift
1580 * lines around within our data structures, because lineptr()
1581 * will take care of resizing each individual line if
1584 * - If the new screen is longer, we shunt lines in from temporary
1585 * scrollback if possible, otherwise we add new blank lines at
1588 * - If the new screen is shorter, we remove any blank lines at
1589 * the bottom if possible, otherwise shunt lines above the cursor
1590 * to scrollback if possible, otherwise delete lines below the
1593 * - Then, if the new scrollback length is less than the
1594 * amount of scrollback we actually have, we must throw some
1597 sblen = count234(term->scrollback);
1598 /* Do this loop to expand the screen if newrows > rows */
1599 assert(term->rows == count234(term->screen));
1600 while (term->rows < newrows) {
1601 if (term->tempsblines > 0) {
1602 unsigned char *cline;
1603 /* Insert a line from the scrollback at the top of the screen. */
1604 assert(sblen >= term->tempsblines);
1605 cline = delpos234(term->scrollback, --sblen);
1606 line = decompressline(cline, NULL);
1608 line->temporary = FALSE; /* reconstituted line is now real */
1609 term->tempsblines -= 1;
1610 addpos234(term->screen, line, 0);
1612 term->savecurs.y += 1;
1614 /* Add a new blank line at the bottom of the screen. */
1615 line = newline(term, newcols, FALSE);
1616 addpos234(term->screen, line, count234(term->screen));
1620 /* Do this loop to shrink the screen if newrows < rows */
1621 while (term->rows > newrows) {
1622 if (term->curs.y < term->rows - 1) {
1623 /* delete bottom row, unless it contains the cursor */
1624 sfree(delpos234(term->screen, term->rows - 1));
1626 /* push top row to scrollback */
1627 line = delpos234(term->screen, 0);
1628 addpos234(term->scrollback, compressline(line), sblen++);
1630 term->tempsblines += 1;
1632 term->savecurs.y -= 1;
1636 assert(term->rows == newrows);
1637 assert(count234(term->screen) == newrows);
1639 /* Delete any excess lines from the scrollback. */
1640 while (sblen > newsavelines) {
1641 line = delpos234(term->scrollback, 0);
1645 if (sblen < term->tempsblines)
1646 term->tempsblines = sblen;
1647 assert(count234(term->scrollback) <= newsavelines);
1648 assert(count234(term->scrollback) >= term->tempsblines);
1651 /* Make a new displayed text buffer. */
1652 newdisp = snewn(newrows, termline *);
1653 for (i = 0; i < newrows; i++) {
1654 newdisp[i] = newline(term, newcols, FALSE);
1655 for (j = 0; j < newcols; j++)
1656 newdisp[i]->chars[j].attr = ATTR_INVALID;
1658 if (term->disptext) {
1659 for (i = 0; i < oldrows; i++)
1660 freeline(term->disptext[i]);
1662 sfree(term->disptext);
1663 term->disptext = newdisp;
1664 term->dispcursx = term->dispcursy = -1;
1666 /* Make a new alternate screen. */
1667 newalt = newtree234(NULL);
1668 for (i = 0; i < newrows; i++) {
1669 line = newline(term, newcols, TRUE);
1670 addpos234(newalt, line, i);
1672 if (term->alt_screen) {
1673 while (NULL != (line = delpos234(term->alt_screen, 0)))
1675 freetree234(term->alt_screen);
1677 term->alt_screen = newalt;
1678 term->alt_sblines = 0;
1680 term->tabs = sresize(term->tabs, newcols, unsigned char);
1683 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
1684 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
1687 /* Check that the cursor positions are still valid. */
1688 if (term->savecurs.y < 0)
1689 term->savecurs.y = 0;
1690 if (term->savecurs.y >= newrows)
1691 term->savecurs.y = newrows - 1;
1692 if (term->curs.y < 0)
1694 if (term->curs.y >= newrows)
1695 term->curs.y = newrows - 1;
1696 if (term->curs.x >= newcols)
1697 term->curs.x = newcols - 1;
1698 term->alt_x = term->alt_y = 0;
1699 term->wrapnext = term->alt_wnext = FALSE;
1701 term->rows = newrows;
1702 term->cols = newcols;
1703 term->savelines = newsavelines;
1705 swap_screen(term, save_alt_which, FALSE, FALSE);
1709 if (term->resize_fn)
1710 term->resize_fn(term->resize_ctx, term->cols, term->rows);
1714 * Hand a function and context pointer to the terminal which it can
1715 * use to notify a back end of resizes.
1717 void term_provide_resize_fn(Terminal *term,
1718 void (*resize_fn)(void *, int, int),
1721 term->resize_fn = resize_fn;
1722 term->resize_ctx = resize_ctx;
1723 if (term->cols > 0 && term->rows > 0)
1724 resize_fn(resize_ctx, term->cols, term->rows);
1727 /* Find the bottom line on the screen that has any content.
1728 * If only the top line has content, returns 0.
1729 * If no lines have content, return -1.
1731 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
1734 for (i = count234(screen) - 1; i >= 0; i--) {
1735 termline *line = index234(screen, i);
1737 for (j = 0; j < line->cols; j++)
1738 if (!termchars_equal(&line->chars[j], &term->erase_char))
1740 if (j != line->cols) break;
1746 * Swap screens. If `reset' is TRUE and we have been asked to
1747 * switch to the alternate screen, we must bring most of its
1748 * configuration from the main screen and erase the contents of the
1749 * alternate screen completely. (This is even true if we're already
1750 * on it! Blame xterm.)
1752 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
1759 reset = FALSE; /* do no weird resetting if which==0 */
1761 if (which != term->alt_which) {
1762 term->alt_which = which;
1764 ttr = term->alt_screen;
1765 term->alt_screen = term->screen;
1767 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
1769 if (!reset && !keep_cur_pos)
1770 term->curs.x = term->alt_x;
1773 if (!reset && !keep_cur_pos)
1774 term->curs.y = term->alt_y;
1777 if (!reset) term->marg_t = term->alt_t;
1780 if (!reset) term->marg_b = term->alt_b;
1783 if (!reset) term->dec_om = term->alt_om;
1786 if (!reset) term->wrap = term->alt_wrap;
1789 if (!reset) term->wrapnext = term->alt_wnext;
1790 term->alt_wnext = t;
1792 if (!reset) term->insert = term->alt_ins;
1795 if (!reset) term->cset = term->alt_cset;
1798 if (!reset) term->utf = term->alt_utf;
1801 if (!reset) term->sco_acs = term->alt_sco_acs;
1802 term->alt_sco_acs = t;
1804 tp = term->savecurs;
1805 if (!reset && !keep_cur_pos)
1806 term->savecurs = term->alt_savecurs;
1807 term->alt_savecurs = tp;
1808 t = term->save_cset;
1809 if (!reset && !keep_cur_pos)
1810 term->save_cset = term->alt_save_cset;
1811 term->alt_save_cset = t;
1812 t = term->save_csattr;
1813 if (!reset && !keep_cur_pos)
1814 term->save_csattr = term->alt_save_csattr;
1815 term->alt_save_csattr = t;
1816 t = term->save_attr;
1817 if (!reset && !keep_cur_pos)
1818 term->save_attr = term->alt_save_attr;
1819 term->alt_save_attr = t;
1821 if (!reset && !keep_cur_pos)
1822 term->save_utf = term->alt_save_utf;
1823 term->alt_save_utf = t;
1824 t = term->save_wnext;
1825 if (!reset && !keep_cur_pos)
1826 term->save_wnext = term->alt_save_wnext;
1827 term->alt_save_wnext = t;
1828 t = term->save_sco_acs;
1829 if (!reset && !keep_cur_pos)
1830 term->save_sco_acs = term->alt_save_sco_acs;
1831 term->alt_save_sco_acs = t;
1834 if (reset && term->screen) {
1836 * Yes, this _is_ supposed to honour background-colour-erase.
1838 erase_lots(term, FALSE, TRUE, TRUE);
1843 * Update the scroll bar.
1845 static void update_sbar(Terminal *term)
1847 int nscroll = sblines(term);
1848 set_sbar(term->frontend, nscroll + term->rows,
1849 nscroll + term->disptop, term->rows);
1853 * Check whether the region bounded by the two pointers intersects
1854 * the scroll region, and de-select the on-screen selection if so.
1856 static void check_selection(Terminal *term, pos from, pos to)
1858 if (poslt(from, term->selend) && poslt(term->selstart, to))
1863 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
1864 * for backward.) `sb' is TRUE if the scrolling is permitted to
1865 * affect the scrollback buffer.
1867 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
1870 int i, seltop, olddisptop, shift;
1872 if (topline != 0 || term->alt_which != 0)
1875 olddisptop = term->disptop;
1879 line = delpos234(term->screen, botline);
1880 resizeline(term, line, term->cols);
1881 for (i = 0; i < term->cols; i++)
1882 copy_termchar(line, i, &term->erase_char);
1883 line->lattr = LATTR_NORM;
1884 addpos234(term->screen, line, topline);
1886 if (term->selstart.y >= topline && term->selstart.y <= botline) {
1888 if (term->selstart.y > botline) {
1889 term->selstart.y = botline + 1;
1890 term->selstart.x = 0;
1893 if (term->selend.y >= topline && term->selend.y <= botline) {
1895 if (term->selend.y > botline) {
1896 term->selend.y = botline + 1;
1905 line = delpos234(term->screen, topline);
1906 #ifdef TERM_CC_DIAGS
1909 if (sb && term->savelines > 0) {
1910 int sblen = count234(term->scrollback);
1912 * We must add this line to the scrollback. We'll
1913 * remove a line from the top of the scrollback if
1914 * the scrollback is full.
1916 if (sblen == term->savelines) {
1917 unsigned char *cline;
1920 cline = delpos234(term->scrollback, 0);
1923 term->tempsblines += 1;
1925 addpos234(term->scrollback, compressline(line), sblen);
1927 /* now `line' itself can be reused as the bottom line */
1930 * If the user is currently looking at part of the
1931 * scrollback, and they haven't enabled any options
1932 * that are going to reset the scrollback as a
1933 * result of this movement, then the chances are
1934 * they'd like to keep looking at the same line. So
1935 * we move their viewpoint at the same rate as the
1936 * scroll, at least until their viewpoint hits the
1937 * top end of the scrollback buffer, at which point
1938 * we don't have the choice any more.
1940 * Thanks to Jan Holmen Holsten for the idea and
1941 * initial implementation.
1943 if (term->disptop > -term->savelines && term->disptop < 0)
1946 resizeline(term, line, term->cols);
1947 for (i = 0; i < term->cols; i++)
1948 copy_termchar(line, i, &term->erase_char);
1949 line->lattr = LATTR_NORM;
1950 addpos234(term->screen, line, botline);
1953 * If the selection endpoints move into the scrollback,
1954 * we keep them moving until they hit the top. However,
1955 * of course, if the line _hasn't_ moved into the
1956 * scrollback then we don't do this, and cut them off
1957 * at the top of the scroll region.
1959 * This applies to selstart and selend (for an existing
1960 * selection), and also selanchor (for one being
1961 * selected as we speak).
1963 seltop = sb ? -term->savelines : topline;
1965 if (term->selstate != NO_SELECTION) {
1966 if (term->selstart.y >= seltop &&
1967 term->selstart.y <= botline) {
1969 if (term->selstart.y < seltop) {
1970 term->selstart.y = seltop;
1971 term->selstart.x = 0;
1974 if (term->selend.y >= seltop && term->selend.y <= botline) {
1976 if (term->selend.y < seltop) {
1977 term->selend.y = seltop;
1981 if (term->selanchor.y >= seltop &&
1982 term->selanchor.y <= botline) {
1983 term->selanchor.y--;
1984 if (term->selanchor.y < seltop) {
1985 term->selanchor.y = seltop;
1986 term->selanchor.x = 0;
1994 #ifdef OPTIMISE_SCROLL
1995 shift += term->disptop - olddisptop;
1996 if (shift < term->rows && shift > -term->rows && shift != 0)
1997 scroll_display(term, topline, botline, shift);
1998 #endif /* OPTIMISE_SCROLL */
2001 #ifdef OPTIMISE_SCROLL
2003 * Add a scroll of a region on the screen into the pending scroll list.
2004 * `lines' is +ve for scrolling forward, -ve for backward.
2006 * If the scroll is on the same area as the last scroll in the list,
2009 static void save_scroll(Terminal *term, int topline, int botline, int lines)
2011 struct scrollregion *newscroll;
2012 if (term->scrolltail &&
2013 term->scrolltail->topline == topline &&
2014 term->scrolltail->botline == botline) {
2015 term->scrolltail->lines += lines;
2017 newscroll = snew(struct scrollregion);
2018 newscroll->topline = topline;
2019 newscroll->botline = botline;
2020 newscroll->lines = lines;
2021 newscroll->next = NULL;
2023 if (!term->scrollhead)
2024 term->scrollhead = newscroll;
2026 term->scrolltail->next = newscroll;
2027 term->scrolltail = newscroll;
2032 * Scroll the physical display, and our conception of it in disptext.
2034 static void scroll_display(Terminal *term, int topline, int botline, int lines)
2036 int distance, nlines, i, j;
2038 distance = lines > 0 ? lines : -lines;
2039 nlines = botline - topline + 1 - distance;
2041 for (i = 0; i < nlines; i++)
2042 for (j = 0; j < term->cols; j++)
2043 copy_termchar(term->disptext[i], j,
2044 term->disptext[i+distance]->chars+j);
2045 if (term->dispcursy >= 0 &&
2046 term->dispcursy >= topline + distance &&
2047 term->dispcursy < topline + distance + nlines)
2048 term->dispcursy -= distance;
2049 for (i = 0; i < distance; i++)
2050 for (j = 0; j < term->cols; j++)
2051 term->disptext[nlines+i]->chars[j].attr |= ATTR_INVALID;
2053 for (i = nlines; i-- ;)
2054 for (j = 0; j < term->cols; j++)
2055 copy_termchar(term->disptext[i+distance], j,
2056 term->disptext[i]->chars+j);
2057 if (term->dispcursy >= 0 &&
2058 term->dispcursy >= topline &&
2059 term->dispcursy < topline + nlines)
2060 term->dispcursy += distance;
2061 for (i = 0; i < distance; i++)
2062 for (j = 0; j < term->cols; j++)
2063 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
2065 save_scroll(term, topline, botline, lines);
2067 #endif /* OPTIMISE_SCROLL */
2070 * Move the cursor to a given position, clipping at boundaries. We
2071 * may or may not want to clip at the scroll margin: marg_clip is 0
2072 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
2073 * even _being_ outside the margins.
2075 static void move(Terminal *term, int x, int y, int marg_clip)
2079 if (x >= term->cols)
2082 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
2085 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
2091 if (y >= term->rows)
2095 term->wrapnext = FALSE;
2099 * Save or restore the cursor and SGR mode.
2101 static void save_cursor(Terminal *term, int save)
2104 term->savecurs = term->curs;
2105 term->save_attr = term->curr_attr;
2106 term->save_cset = term->cset;
2107 term->save_utf = term->utf;
2108 term->save_wnext = term->wrapnext;
2109 term->save_csattr = term->cset_attr[term->cset];
2110 term->save_sco_acs = term->sco_acs;
2112 term->curs = term->savecurs;
2113 /* Make sure the window hasn't shrunk since the save */
2114 if (term->curs.x >= term->cols)
2115 term->curs.x = term->cols - 1;
2116 if (term->curs.y >= term->rows)
2117 term->curs.y = term->rows - 1;
2119 term->curr_attr = term->save_attr;
2120 term->cset = term->save_cset;
2121 term->utf = term->save_utf;
2122 term->wrapnext = term->save_wnext;
2124 * wrapnext might reset to False if the x position is no
2125 * longer at the rightmost edge.
2127 if (term->wrapnext && term->curs.x < term->cols-1)
2128 term->wrapnext = FALSE;
2129 term->cset_attr[term->cset] = term->save_csattr;
2130 term->sco_acs = term->save_sco_acs;
2131 set_erase_char(term);
2136 * This function is called before doing _anything_ which affects
2137 * only part of a line of text. It is used to mark the boundary
2138 * between two character positions, and it indicates that some sort
2139 * of effect is going to happen on only one side of that boundary.
2141 * The effect of this function is to check whether a CJK
2142 * double-width character is straddling the boundary, and to remove
2143 * it and replace it with two spaces if so. (Of course, one or
2144 * other of those spaces is then likely to be replaced with
2145 * something else again, as a result of whatever happens next.)
2147 * Also, if the boundary is at the right-hand _edge_ of the screen,
2148 * it implies something deliberate is being done to the rightmost
2149 * column position; hence we must clear LATTR_WRAPPED2.
2151 * The input to the function is the coordinates of the _second_
2152 * character of the pair.
2154 static void check_boundary(Terminal *term, int x, int y)
2158 /* Validate input coordinates, just in case. */
2159 if (x == 0 || x > term->cols)
2162 ldata = scrlineptr(y);
2163 if (x == term->cols) {
2164 ldata->lattr &= ~LATTR_WRAPPED2;
2166 if (ldata->chars[x].chr == UCSWIDE) {
2167 clear_cc(ldata, x-1);
2169 ldata->chars[x-1].chr = ' ' | CSET_ASCII;
2170 ldata->chars[x] = ldata->chars[x-1];
2176 * Erase a large portion of the screen: the whole screen, or the
2177 * whole line, or parts thereof.
2179 static void erase_lots(Terminal *term,
2180 int line_only, int from_begin, int to_end)
2184 int erasing_lines_from_top = 0;
2187 start.y = term->curs.y;
2189 end.y = term->curs.y + 1;
2191 erase_lattr = FALSE;
2206 if (!from_begin || !to_end)
2207 check_boundary(term, term->curs.x, term->curs.y);
2208 check_selection(term, start, end);
2210 /* Clear screen also forces a full window redraw, just in case. */
2211 if (start.y == 0 && start.x == 0 && end.y == term->rows)
2212 term_invalidate(term);
2214 /* Lines scrolled away shouldn't be brought back on if the terminal
2216 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
2217 erasing_lines_from_top = 1;
2219 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
2220 /* If it's a whole number of lines, starting at the top, and
2221 * we're fully erasing them, erase by scrolling and keep the
2222 * lines in the scrollback. */
2223 int scrolllines = end.y;
2224 if (end.y == term->rows) {
2225 /* Shrink until we find a non-empty row.*/
2226 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
2228 if (scrolllines > 0)
2229 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
2231 termline *ldata = scrlineptr(start.y);
2232 while (poslt(start, end)) {
2233 if (start.x == term->cols) {
2235 ldata->lattr &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
2237 ldata->lattr = LATTR_NORM;
2239 copy_termchar(ldata, start.x, &term->erase_char);
2241 if (incpos(start) && start.y < term->rows) {
2242 ldata = scrlineptr(start.y);
2247 /* After an erase of lines from the top of the screen, we shouldn't
2248 * bring the lines back again if the terminal enlarges (since the user or
2249 * application has explictly thrown them away). */
2250 if (erasing_lines_from_top && !(term->alt_which))
2251 term->tempsblines = 0;
2255 * Insert or delete characters within the current line. n is +ve if
2256 * insertion is desired, and -ve for deletion.
2258 static void insch(Terminal *term, int n)
2260 int dir = (n < 0 ? -1 : +1);
2265 n = (n < 0 ? -n : n);
2266 if (n > term->cols - term->curs.x)
2267 n = term->cols - term->curs.x;
2268 m = term->cols - term->curs.x - n;
2269 cursplus.y = term->curs.y;
2270 cursplus.x = term->curs.x + n;
2271 check_selection(term, term->curs, cursplus);
2272 check_boundary(term, term->curs.x, term->curs.y);
2274 check_boundary(term, term->curs.x + n, term->curs.y);
2275 ldata = scrlineptr(term->curs.y);
2277 for (j = 0; j < m; j++)
2278 move_termchar(ldata,
2279 ldata->chars + term->curs.x + j,
2280 ldata->chars + term->curs.x + j + n);
2282 copy_termchar(ldata, term->curs.x + m++, &term->erase_char);
2285 move_termchar(ldata,
2286 ldata->chars + term->curs.x + j + n,
2287 ldata->chars + term->curs.x + j);
2289 copy_termchar(ldata, term->curs.x + n, &term->erase_char);
2294 * Toggle terminal mode `mode' to state `state'. (`query' indicates
2295 * whether the mode is a DEC private one or a normal one.)
2297 static void toggle_mode(Terminal *term, int mode, int query, int state)
2301 case 1: /* DECCKM: application cursor keys */
2302 term->app_cursor_keys = state;
2304 case 2: /* DECANM: VT52 mode */
2305 term->vt52_mode = !state;
2306 if (term->vt52_mode) {
2307 term->blink_is_real = FALSE;
2308 term->vt52_bold = FALSE;
2310 term->blink_is_real = term->cfg.blinktext;
2312 term_schedule_tblink(term);
2314 case 3: /* DECCOLM: 80/132 columns */
2316 if (!term->cfg.no_remote_resize)
2317 request_resize(term->frontend, state ? 132 : 80, term->rows);
2318 term->reset_132 = state;
2319 term->alt_t = term->marg_t = 0;
2320 term->alt_b = term->marg_b = term->rows - 1;
2321 move(term, 0, 0, 0);
2322 erase_lots(term, FALSE, TRUE, TRUE);
2324 case 5: /* DECSCNM: reverse video */
2326 * Toggle reverse video. If we receive an OFF within the
2327 * visual bell timeout period after an ON, we trigger an
2328 * effective visual bell, so that ESC[?5hESC[?5l will
2329 * always be an actually _visible_ visual bell.
2331 if (term->rvideo && !state) {
2332 /* This is an OFF, so set up a vbell */
2333 term_schedule_vbell(term, TRUE, term->rvbell_startpoint);
2334 } else if (!term->rvideo && state) {
2335 /* This is an ON, so we notice the time and save it. */
2336 term->rvbell_startpoint = GETTICKCOUNT();
2338 term->rvideo = state;
2339 seen_disp_event(term);
2341 case 6: /* DECOM: DEC origin mode */
2342 term->dec_om = state;
2344 case 7: /* DECAWM: auto wrap */
2347 case 8: /* DECARM: auto key repeat */
2348 term->repeat_off = !state;
2350 case 10: /* DECEDM: set local edit mode */
2351 term->term_editing = state;
2352 if (term->ldisc) /* cause ldisc to notice changes */
2353 ldisc_send(term->ldisc, NULL, 0, 0);
2355 case 25: /* DECTCEM: enable/disable cursor */
2356 compatibility2(OTHER, VT220);
2357 term->cursor_on = state;
2358 seen_disp_event(term);
2360 case 47: /* alternate screen */
2361 compatibility(OTHER);
2363 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
2366 case 1000: /* xterm mouse 1 */
2367 term->xterm_mouse = state ? 1 : 0;
2368 set_raw_mouse_mode(term->frontend, state);
2370 case 1002: /* xterm mouse 2 */
2371 term->xterm_mouse = state ? 2 : 0;
2372 set_raw_mouse_mode(term->frontend, state);
2374 case 1047: /* alternate screen */
2375 compatibility(OTHER);
2377 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
2380 case 1048: /* save/restore cursor */
2381 if (!term->cfg.no_alt_screen)
2382 save_cursor(term, state);
2383 if (!state) seen_disp_event(term);
2385 case 1049: /* cursor & alternate screen */
2386 if (state && !term->cfg.no_alt_screen)
2387 save_cursor(term, state);
2388 if (!state) seen_disp_event(term);
2389 compatibility(OTHER);
2391 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
2392 if (!state && !term->cfg.no_alt_screen)
2393 save_cursor(term, state);
2398 case 4: /* IRM: set insert mode */
2399 compatibility(VT102);
2400 term->insert = state;
2402 case 12: /* SRM: set echo mode */
2403 term->term_echoing = !state;
2404 if (term->ldisc) /* cause ldisc to notice changes */
2405 ldisc_send(term->ldisc, NULL, 0, 0);
2407 case 20: /* LNM: Return sends ... */
2408 term->cr_lf_return = state;
2410 case 34: /* WYULCURM: Make cursor BIG */
2411 compatibility2(OTHER, VT220);
2412 term->big_cursor = !state;
2417 * Process an OSC sequence: set window title or icon name.
2419 static void do_osc(Terminal *term)
2422 while (term->osc_strlen--)
2423 term->wordness[(unsigned char)
2424 term->osc_string[term->osc_strlen]] = term->esc_args[0];
2426 term->osc_string[term->osc_strlen] = '\0';
2427 switch (term->esc_args[0]) {
2430 if (!term->cfg.no_remote_wintitle)
2431 set_icon(term->frontend, term->osc_string);
2432 if (term->esc_args[0] == 1)
2434 /* fall through: parameter 0 means set both */
2437 if (!term->cfg.no_remote_wintitle)
2438 set_title(term->frontend, term->osc_string);
2445 * ANSI printing routines.
2447 static void term_print_setup(Terminal *term)
2449 bufchain_clear(&term->printer_buf);
2450 term->print_job = printer_start_job(term->cfg.printer);
2452 static void term_print_flush(Terminal *term)
2457 while ((size = bufchain_size(&term->printer_buf)) > 5) {
2458 bufchain_prefix(&term->printer_buf, &data, &len);
2461 printer_job_data(term->print_job, data, len);
2462 bufchain_consume(&term->printer_buf, len);
2465 static void term_print_finish(Terminal *term)
2471 if (!term->printing && !term->only_printing)
2472 return; /* we need do nothing */
2474 term_print_flush(term);
2475 while ((size = bufchain_size(&term->printer_buf)) > 0) {
2476 bufchain_prefix(&term->printer_buf, &data, &len);
2478 if (c == '\033' || c == '\233') {
2479 bufchain_consume(&term->printer_buf, size);
2482 printer_job_data(term->print_job, &c, 1);
2483 bufchain_consume(&term->printer_buf, 1);
2486 printer_finish_job(term->print_job);
2487 term->print_job = NULL;
2488 term->printing = term->only_printing = FALSE;
2492 * Remove everything currently in `inbuf' and stick it up on the
2493 * in-memory display. There's a big state machine in here to
2494 * process escape sequences...
2496 static void term_out(Terminal *term)
2500 unsigned char localbuf[256], *chars;
2505 chars = NULL; /* placate compiler warnings */
2506 while (nchars > 0 || unget != -1 || bufchain_size(&term->inbuf) > 0) {
2510 bufchain_prefix(&term->inbuf, &ret, &nchars);
2511 if (nchars > sizeof(localbuf))
2512 nchars = sizeof(localbuf);
2513 memcpy(localbuf, ret, nchars);
2514 bufchain_consume(&term->inbuf, nchars);
2516 assert(chars != NULL);
2522 * Optionally log the session traffic to a file. Useful for
2523 * debugging and possibly also useful for actual logging.
2525 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
2526 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
2532 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
2533 * be able to display 8-bit characters, but I'll let that go 'cause
2538 * If we're printing, add the character to the printer
2541 if (term->printing) {
2542 bufchain_add(&term->printer_buf, &c, 1);
2545 * If we're in print-only mode, we use a much simpler
2546 * state machine designed only to recognise the ESC[4i
2547 * termination sequence.
2549 if (term->only_printing) {
2551 term->print_state = 1;
2552 else if (c == (unsigned char)'\233')
2553 term->print_state = 2;
2554 else if (c == '[' && term->print_state == 1)
2555 term->print_state = 2;
2556 else if (c == '4' && term->print_state == 2)
2557 term->print_state = 3;
2558 else if (c == 'i' && term->print_state == 3)
2559 term->print_state = 4;
2561 term->print_state = 0;
2562 if (term->print_state == 4) {
2563 term_print_finish(term);
2569 /* First see about all those translations. */
2570 if (term->termstate == TOPLEVEL) {
2572 switch (term->utf_state) {
2575 /* UTF-8 must be stateless so we ignore iso2022. */
2576 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2577 c = term->ucsdata->unitab_ctrl[c];
2578 else c = ((unsigned char)c) | CSET_ASCII;
2580 } else if ((c & 0xe0) == 0xc0) {
2581 term->utf_size = term->utf_state = 1;
2582 term->utf_char = (c & 0x1f);
2583 } else if ((c & 0xf0) == 0xe0) {
2584 term->utf_size = term->utf_state = 2;
2585 term->utf_char = (c & 0x0f);
2586 } else if ((c & 0xf8) == 0xf0) {
2587 term->utf_size = term->utf_state = 3;
2588 term->utf_char = (c & 0x07);
2589 } else if ((c & 0xfc) == 0xf8) {
2590 term->utf_size = term->utf_state = 4;
2591 term->utf_char = (c & 0x03);
2592 } else if ((c & 0xfe) == 0xfc) {
2593 term->utf_size = term->utf_state = 5;
2594 term->utf_char = (c & 0x01);
2605 if ((c & 0xC0) != 0x80) {
2608 term->utf_state = 0;
2611 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
2612 if (--term->utf_state)
2617 /* Is somebody trying to be evil! */
2619 (c < 0x800 && term->utf_size >= 2) ||
2620 (c < 0x10000 && term->utf_size >= 3) ||
2621 (c < 0x200000 && term->utf_size >= 4) ||
2622 (c < 0x4000000 && term->utf_size >= 5))
2625 /* Unicode line separator and paragraph separator are CR-LF */
2626 if (c == 0x2028 || c == 0x2029)
2629 /* High controls are probably a Baaad idea too. */
2633 /* The UTF-16 surrogates are not nice either. */
2634 /* The standard give the option of decoding these:
2635 * I don't want to! */
2636 if (c >= 0xD800 && c < 0xE000)
2639 /* ISO 10646 characters now limited to UTF-16 range. */
2643 /* This is currently a TagPhobic application.. */
2644 if (c >= 0xE0000 && c <= 0xE007F)
2647 /* U+FEFF is best seen as a null. */
2650 /* But U+FFFE is an error. */
2651 if (c == 0xFFFE || c == 0xFFFF)
2656 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
2657 else if(term->sco_acs &&
2658 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
2660 if (term->sco_acs == 2) c |= 0x80;
2663 switch (term->cset_attr[term->cset]) {
2665 * Linedraw characters are different from 'ESC ( B'
2666 * only for a small range. For ones outside that
2667 * range, make sure we use the same font as well as
2668 * the same encoding.
2671 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2672 c = term->ucsdata->unitab_ctrl[c];
2674 c = ((unsigned char) c) | CSET_LINEDRW;
2678 /* If UK-ASCII, make the '#' a LineDraw Pound */
2680 c = '}' | CSET_LINEDRW;
2683 /*FALLTHROUGH*/ case CSET_ASCII:
2684 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
2685 c = term->ucsdata->unitab_ctrl[c];
2687 c = ((unsigned char) c) | CSET_ASCII;
2690 if (c>=' ') c = ((unsigned char)c) | CSET_SCOACS;
2697 * How about C1 controls?
2698 * Explicitly ignore SCI (0x9a), which we don't translate to DECID.
2700 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
2701 !term->vt52_mode && has_compat(VT220)) {
2705 term->termstate = SEEN_ESC;
2706 term->esc_query = FALSE;
2707 c = '@' + (c & 0x1F);
2711 /* Or the GL control. */
2712 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
2713 if (term->curs.x && !term->wrapnext)
2715 term->wrapnext = FALSE;
2716 /* destructive backspace might be disabled */
2717 if (!term->cfg.no_dbackspace) {
2718 check_boundary(term, term->curs.x, term->curs.y);
2719 check_boundary(term, term->curs.x+1, term->curs.y);
2720 copy_termchar(scrlineptr(term->curs.y),
2721 term->curs.x, &term->erase_char);
2724 /* Or normal C0 controls. */
2725 if ((c & ~0x1F) == 0 && term->termstate < DO_CTRLS) {
2727 case '\005': /* ENQ: terminal type query */
2729 * Strictly speaking this is VT100 but a VT100 defaults to
2730 * no response. Other terminals respond at their option.
2732 * Don't put a CR in the default string as this tends to
2733 * upset some weird software.
2735 compatibility(ANSIMIN);
2737 char abuf[lenof(term->cfg.answerback)], *s, *d;
2738 for (s = term->cfg.answerback, d = abuf; *s;) {
2740 char c = ctrlparse(s, &n);
2748 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
2752 case '\007': /* BEL: Bell */
2754 struct beeptime *newbeep;
2755 unsigned long ticks;
2757 ticks = GETTICKCOUNT();
2759 if (!term->beep_overloaded) {
2760 newbeep = snew(struct beeptime);
2761 newbeep->ticks = ticks;
2762 newbeep->next = NULL;
2763 if (!term->beephead)
2764 term->beephead = newbeep;
2766 term->beeptail->next = newbeep;
2767 term->beeptail = newbeep;
2772 * Throw out any beeps that happened more than
2775 while (term->beephead &&
2776 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
2777 struct beeptime *tmp = term->beephead;
2778 term->beephead = tmp->next;
2780 if (!term->beephead)
2781 term->beeptail = NULL;
2785 if (term->cfg.bellovl && term->beep_overloaded &&
2786 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
2788 * If we're currently overloaded and the
2789 * last beep was more than s seconds ago,
2790 * leave overload mode.
2792 term->beep_overloaded = FALSE;
2793 } else if (term->cfg.bellovl && !term->beep_overloaded &&
2794 term->nbeeps >= term->cfg.bellovl_n) {
2796 * Now, if we have n or more beeps
2797 * remaining in the queue, go into overload
2800 term->beep_overloaded = TRUE;
2802 term->lastbeep = ticks;
2805 * Perform an actual beep if we're not overloaded.
2807 if (!term->cfg.bellovl || !term->beep_overloaded) {
2808 do_beep(term->frontend, term->cfg.beep);
2810 if (term->cfg.beep == BELL_VISUAL) {
2811 term_schedule_vbell(term, FALSE, 0);
2814 seen_disp_event(term);
2817 case '\b': /* BS: Back space */
2818 if (term->curs.x == 0 &&
2819 (term->curs.y == 0 || term->wrap == 0))
2821 else if (term->curs.x == 0 && term->curs.y > 0)
2822 term->curs.x = term->cols - 1, term->curs.y--;
2823 else if (term->wrapnext)
2824 term->wrapnext = FALSE;
2827 seen_disp_event(term);
2829 case '\016': /* LS1: Locking-shift one */
2830 compatibility(VT100);
2833 case '\017': /* LS0: Locking-shift zero */
2834 compatibility(VT100);
2837 case '\033': /* ESC: Escape */
2838 if (term->vt52_mode)
2839 term->termstate = VT52_ESC;
2841 compatibility(ANSIMIN);
2842 term->termstate = SEEN_ESC;
2843 term->esc_query = FALSE;
2846 case '\015': /* CR: Carriage return */
2848 term->wrapnext = FALSE;
2849 seen_disp_event(term);
2850 term->paste_hold = 0;
2852 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2854 case '\014': /* FF: Form feed */
2855 if (has_compat(SCOANSI)) {
2856 move(term, 0, 0, 0);
2857 erase_lots(term, FALSE, FALSE, TRUE);
2859 term->wrapnext = FALSE;
2860 seen_disp_event(term);
2863 case '\013': /* VT: Line tabulation */
2864 compatibility(VT100);
2865 case '\012': /* LF: Line feed */
2866 if (term->curs.y == term->marg_b)
2867 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2868 else if (term->curs.y < term->rows - 1)
2870 if (term->cfg.lfhascr)
2872 term->wrapnext = FALSE;
2873 seen_disp_event(term);
2874 term->paste_hold = 0;
2876 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
2878 case '\t': /* HT: Character tabulation */
2880 pos old_curs = term->curs;
2881 termline *ldata = scrlineptr(term->curs.y);
2885 } while (term->curs.x < term->cols - 1 &&
2886 !term->tabs[term->curs.x]);
2888 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM) {
2889 if (term->curs.x >= term->cols / 2)
2890 term->curs.x = term->cols / 2 - 1;
2892 if (term->curs.x >= term->cols)
2893 term->curs.x = term->cols - 1;
2896 check_selection(term, old_curs, term->curs);
2898 seen_disp_event(term);
2902 switch (term->termstate) {
2904 /* Only graphic characters get this far;
2905 * ctrls are stripped above */
2907 termline *cline = scrlineptr(term->curs.y);
2912 width = (term->cfg.cjk_ambig_wide ?
2913 mk_wcwidth_cjk((wchar_t) c) :
2914 mk_wcwidth((wchar_t) c));
2916 if (term->wrapnext && term->wrap && width > 0) {
2917 cline->lattr |= LATTR_WRAPPED;
2918 if (term->curs.y == term->marg_b)
2919 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
2920 else if (term->curs.y < term->rows - 1)
2923 term->wrapnext = FALSE;
2924 cline = scrlineptr(term->curs.y);
2926 if (term->insert && width > 0)
2928 if (term->selstate != NO_SELECTION) {
2929 pos cursplus = term->curs;
2931 check_selection(term, term->curs, cursplus);
2933 if (((c & CSET_MASK) == CSET_ASCII ||
2934 (c & CSET_MASK) == 0) &&
2936 logtraffic(term->logctx, (unsigned char) c,
2942 * If we're about to display a double-width
2943 * character starting in the rightmost
2944 * column, then we do something special
2945 * instead. We must print a space in the
2946 * last column of the screen, then wrap;
2947 * and we also set LATTR_WRAPPED2 which
2948 * instructs subsequent cut-and-pasting not
2949 * only to splice this line to the one
2950 * after it, but to ignore the space in the
2951 * last character position as well.
2952 * (Because what was actually output to the
2953 * terminal was presumably just a sequence
2954 * of CJK characters, and we don't want a
2955 * space to be pasted in the middle of
2956 * those just because they had the
2957 * misfortune to start in the wrong parity
2958 * column. xterm concurs.)
2960 check_boundary(term, term->curs.x, term->curs.y);
2961 check_boundary(term, term->curs.x+2, term->curs.y);
2962 if (term->curs.x == term->cols-1) {
2963 copy_termchar(cline, term->curs.x,
2965 cline->lattr |= LATTR_WRAPPED | LATTR_WRAPPED2;
2966 if (term->curs.y == term->marg_b)
2967 scroll(term, term->marg_t, term->marg_b,
2969 else if (term->curs.y < term->rows - 1)
2972 cline = scrlineptr(term->curs.y);
2973 /* Now we must check_boundary again, of course. */
2974 check_boundary(term, term->curs.x, term->curs.y);
2975 check_boundary(term, term->curs.x+2, term->curs.y);
2979 clear_cc(cline, term->curs.x);
2980 cline->chars[term->curs.x].chr = c;
2981 cline->chars[term->curs.x].attr = term->curr_attr;
2986 clear_cc(cline, term->curs.x);
2987 cline->chars[term->curs.x].chr = UCSWIDE;
2988 cline->chars[term->curs.x].attr = term->curr_attr;
2992 check_boundary(term, term->curs.x, term->curs.y);
2993 check_boundary(term, term->curs.x+1, term->curs.y);
2996 clear_cc(cline, term->curs.x);
2997 cline->chars[term->curs.x].chr = c;
2998 cline->chars[term->curs.x].attr = term->curr_attr;
3002 if (term->curs.x > 0) {
3003 int x = term->curs.x - 1;
3005 /* If we're in wrapnext state, the character
3006 * to combine with is _here_, not to our left. */
3011 * If the previous character is
3012 * UCSWIDE, back up another one.
3014 if (cline->chars[x].chr == UCSWIDE) {
3019 add_cc(cline, x, c);
3020 seen_disp_event(term);
3027 if (term->curs.x == term->cols) {
3029 term->wrapnext = TRUE;
3030 if (term->wrap && term->vt52_mode) {
3031 cline->lattr |= LATTR_WRAPPED;
3032 if (term->curs.y == term->marg_b)
3033 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3034 else if (term->curs.y < term->rows - 1)
3037 term->wrapnext = FALSE;
3040 seen_disp_event(term);
3046 * This state is virtually identical to SEEN_ESC, with the
3047 * exception that we have an OSC sequence in the pipeline,
3048 * and _if_ we see a backslash, we process it.
3052 term->termstate = TOPLEVEL;
3055 /* else fall through */
3057 if (c >= ' ' && c <= '/') {
3058 if (term->esc_query)
3059 term->esc_query = -1;
3061 term->esc_query = c;
3064 term->termstate = TOPLEVEL;
3065 switch (ANSI(c, term->esc_query)) {
3066 case '[': /* enter CSI mode */
3067 term->termstate = SEEN_CSI;
3068 term->esc_nargs = 1;
3069 term->esc_args[0] = ARG_DEFAULT;
3070 term->esc_query = FALSE;
3072 case ']': /* OSC: xterm escape sequences */
3073 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
3074 compatibility(OTHER);
3075 term->termstate = SEEN_OSC;
3076 term->esc_args[0] = 0;
3078 case '7': /* DECSC: save cursor */
3079 compatibility(VT100);
3080 save_cursor(term, TRUE);
3082 case '8': /* DECRC: restore cursor */
3083 compatibility(VT100);
3084 save_cursor(term, FALSE);
3085 seen_disp_event(term);
3087 case '=': /* DECKPAM: Keypad application mode */
3088 compatibility(VT100);
3089 term->app_keypad_keys = TRUE;
3091 case '>': /* DECKPNM: Keypad numeric mode */
3092 compatibility(VT100);
3093 term->app_keypad_keys = FALSE;
3095 case 'D': /* IND: exactly equivalent to LF */
3096 compatibility(VT100);
3097 if (term->curs.y == term->marg_b)
3098 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3099 else if (term->curs.y < term->rows - 1)
3101 term->wrapnext = FALSE;
3102 seen_disp_event(term);
3104 case 'E': /* NEL: exactly equivalent to CR-LF */
3105 compatibility(VT100);
3107 if (term->curs.y == term->marg_b)
3108 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
3109 else if (term->curs.y < term->rows - 1)
3111 term->wrapnext = FALSE;
3112 seen_disp_event(term);
3114 case 'M': /* RI: reverse index - backwards LF */
3115 compatibility(VT100);
3116 if (term->curs.y == term->marg_t)
3117 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
3118 else if (term->curs.y > 0)
3120 term->wrapnext = FALSE;
3121 seen_disp_event(term);
3123 case 'Z': /* DECID: terminal type query */
3124 compatibility(VT100);
3126 ldisc_send(term->ldisc, term->id_string,
3127 strlen(term->id_string), 0);
3129 case 'c': /* RIS: restore power-on settings */
3130 compatibility(VT100);
3131 power_on(term, TRUE);
3132 if (term->ldisc) /* cause ldisc to notice changes */
3133 ldisc_send(term->ldisc, NULL, 0, 0);
3134 if (term->reset_132) {
3135 if (!term->cfg.no_remote_resize)
3136 request_resize(term->frontend, 80, term->rows);
3137 term->reset_132 = 0;
3140 seen_disp_event(term);
3142 case 'H': /* HTS: set a tab */
3143 compatibility(VT100);
3144 term->tabs[term->curs.x] = TRUE;
3147 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
3148 compatibility(VT100);
3154 for (i = 0; i < term->rows; i++) {
3155 ldata = scrlineptr(i);
3156 for (j = 0; j < term->cols; j++) {
3157 copy_termchar(ldata, j,
3158 &term->basic_erase_char);
3159 ldata->chars[j].chr = 'E';
3161 ldata->lattr = LATTR_NORM;
3164 seen_disp_event(term);
3165 scrtop.x = scrtop.y = 0;
3167 scrbot.y = term->rows;
3168 check_selection(term, scrtop, scrbot);
3172 case ANSI('3', '#'):
3173 case ANSI('4', '#'):
3174 case ANSI('5', '#'):
3175 case ANSI('6', '#'):
3176 compatibility(VT100);
3180 switch (ANSI(c, term->esc_query)) {
3181 case ANSI('3', '#'): /* DECDHL: 2*height, top */
3184 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
3187 case ANSI('5', '#'): /* DECSWL: normal */
3188 nlattr = LATTR_NORM;
3190 default: /* case ANSI('6', '#'): DECDWL: 2*width */
3191 nlattr = LATTR_WIDE;
3194 scrlineptr(term->curs.y)->lattr = nlattr;
3197 /* GZD4: G0 designate 94-set */
3198 case ANSI('A', '('):
3199 compatibility(VT100);
3200 if (!term->cfg.no_remote_charset)
3201 term->cset_attr[0] = CSET_GBCHR;
3203 case ANSI('B', '('):
3204 compatibility(VT100);
3205 if (!term->cfg.no_remote_charset)
3206 term->cset_attr[0] = CSET_ASCII;
3208 case ANSI('0', '('):
3209 compatibility(VT100);
3210 if (!term->cfg.no_remote_charset)
3211 term->cset_attr[0] = CSET_LINEDRW;
3213 case ANSI('U', '('):
3214 compatibility(OTHER);
3215 if (!term->cfg.no_remote_charset)
3216 term->cset_attr[0] = CSET_SCOACS;
3218 /* G1D4: G1-designate 94-set */
3219 case ANSI('A', ')'):
3220 compatibility(VT100);
3221 if (!term->cfg.no_remote_charset)
3222 term->cset_attr[1] = CSET_GBCHR;
3224 case ANSI('B', ')'):
3225 compatibility(VT100);
3226 if (!term->cfg.no_remote_charset)
3227 term->cset_attr[1] = CSET_ASCII;
3229 case ANSI('0', ')'):
3230 compatibility(VT100);
3231 if (!term->cfg.no_remote_charset)
3232 term->cset_attr[1] = CSET_LINEDRW;
3234 case ANSI('U', ')'):
3235 compatibility(OTHER);
3236 if (!term->cfg.no_remote_charset)
3237 term->cset_attr[1] = CSET_SCOACS;
3239 /* DOCS: Designate other coding system */
3240 case ANSI('8', '%'): /* Old Linux code */
3241 case ANSI('G', '%'):
3242 compatibility(OTHER);
3243 if (!term->cfg.no_remote_charset)
3246 case ANSI('@', '%'):
3247 compatibility(OTHER);
3248 if (!term->cfg.no_remote_charset)
3254 term->termstate = TOPLEVEL; /* default */
3256 if (term->esc_nargs <= ARGS_MAX) {
3257 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
3258 term->esc_args[term->esc_nargs - 1] = 0;
3259 term->esc_args[term->esc_nargs - 1] =
3260 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
3262 term->termstate = SEEN_CSI;
3263 } else if (c == ';') {
3264 if (++term->esc_nargs <= ARGS_MAX)
3265 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
3266 term->termstate = SEEN_CSI;
3267 } else if (c < '@') {
3268 if (term->esc_query)
3269 term->esc_query = -1;
3271 term->esc_query = TRUE;
3273 term->esc_query = c;
3274 term->termstate = SEEN_CSI;
3276 switch (ANSI(c, term->esc_query)) {
3277 case 'A': /* CUU: move up N lines */
3278 move(term, term->curs.x,
3279 term->curs.y - def(term->esc_args[0], 1), 1);
3280 seen_disp_event(term);
3282 case 'e': /* VPR: move down N lines */
3283 compatibility(ANSI);
3285 case 'B': /* CUD: Cursor down */
3286 move(term, term->curs.x,
3287 term->curs.y + def(term->esc_args[0], 1), 1);
3288 seen_disp_event(term);
3290 case ANSI('c', '>'): /* DA: report xterm version */
3291 compatibility(OTHER);
3292 /* this reports xterm version 136 so that VIM can
3293 use the drag messages from the mouse reporting */
3295 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
3297 case 'a': /* HPR: move right N cols */
3298 compatibility(ANSI);
3300 case 'C': /* CUF: Cursor right */
3301 move(term, term->curs.x + def(term->esc_args[0], 1),
3303 seen_disp_event(term);
3305 case 'D': /* CUB: move left N cols */
3306 move(term, term->curs.x - def(term->esc_args[0], 1),
3308 seen_disp_event(term);
3310 case 'E': /* CNL: move down N lines and CR */
3311 compatibility(ANSI);
3313 term->curs.y + def(term->esc_args[0], 1), 1);
3314 seen_disp_event(term);
3316 case 'F': /* CPL: move up N lines and CR */
3317 compatibility(ANSI);
3319 term->curs.y - def(term->esc_args[0], 1), 1);
3320 seen_disp_event(term);
3323 case '`': /* HPA: set horizontal posn */
3324 compatibility(ANSI);
3325 move(term, def(term->esc_args[0], 1) - 1,
3327 seen_disp_event(term);
3329 case 'd': /* VPA: set vertical posn */
3330 compatibility(ANSI);
3331 move(term, term->curs.x,
3332 ((term->dec_om ? term->marg_t : 0) +
3333 def(term->esc_args[0], 1) - 1),
3334 (term->dec_om ? 2 : 0));
3335 seen_disp_event(term);
3338 case 'f': /* HVP: set horz and vert posns at once */
3339 if (term->esc_nargs < 2)
3340 term->esc_args[1] = ARG_DEFAULT;
3341 move(term, def(term->esc_args[1], 1) - 1,
3342 ((term->dec_om ? term->marg_t : 0) +
3343 def(term->esc_args[0], 1) - 1),
3344 (term->dec_om ? 2 : 0));
3345 seen_disp_event(term);
3347 case 'J': /* ED: erase screen or parts of it */
3349 unsigned int i = def(term->esc_args[0], 0) + 1;
3352 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
3355 seen_disp_event(term);
3357 case 'K': /* EL: erase line or parts of it */
3359 unsigned int i = def(term->esc_args[0], 0) + 1;
3362 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
3364 seen_disp_event(term);
3366 case 'L': /* IL: insert lines */
3367 compatibility(VT102);
3368 if (term->curs.y <= term->marg_b)
3369 scroll(term, term->curs.y, term->marg_b,
3370 -def(term->esc_args[0], 1), FALSE);
3371 seen_disp_event(term);
3373 case 'M': /* DL: delete lines */
3374 compatibility(VT102);
3375 if (term->curs.y <= term->marg_b)
3376 scroll(term, term->curs.y, term->marg_b,
3377 def(term->esc_args[0], 1),
3379 seen_disp_event(term);
3381 case '@': /* ICH: insert chars */
3382 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
3383 compatibility(VT102);
3384 insch(term, def(term->esc_args[0], 1));
3385 seen_disp_event(term);
3387 case 'P': /* DCH: delete chars */
3388 compatibility(VT102);
3389 insch(term, -def(term->esc_args[0], 1));
3390 seen_disp_event(term);
3392 case 'c': /* DA: terminal type query */
3393 compatibility(VT100);
3394 /* This is the response for a VT102 */
3396 ldisc_send(term->ldisc, term->id_string,
3397 strlen(term->id_string), 0);
3399 case 'n': /* DSR: cursor position query */
3401 if (term->esc_args[0] == 6) {
3403 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
3405 ldisc_send(term->ldisc, buf, strlen(buf), 0);
3406 } else if (term->esc_args[0] == 5) {
3407 ldisc_send(term->ldisc, "\033[0n", 4, 0);
3411 case 'h': /* SM: toggle modes to high */
3413 compatibility(VT100);
3416 for (i = 0; i < term->esc_nargs; i++)
3417 toggle_mode(term, term->esc_args[i],
3418 term->esc_query, TRUE);
3421 case 'i': /* MC: Media copy */
3423 compatibility(VT100);
3425 if (term->esc_nargs != 1) break;
3426 if (term->esc_args[0] == 5 && *term->cfg.printer) {
3427 term->printing = TRUE;
3428 term->only_printing = !term->esc_query;
3429 term->print_state = 0;
3430 term_print_setup(term);
3431 } else if (term->esc_args[0] == 4 &&
3433 term_print_finish(term);
3437 case 'l': /* RM: toggle modes to low */
3439 compatibility(VT100);
3442 for (i = 0; i < term->esc_nargs; i++)
3443 toggle_mode(term, term->esc_args[i],
3444 term->esc_query, FALSE);
3447 case 'g': /* TBC: clear tabs */
3448 compatibility(VT100);
3449 if (term->esc_nargs == 1) {
3450 if (term->esc_args[0] == 0) {
3451 term->tabs[term->curs.x] = FALSE;
3452 } else if (term->esc_args[0] == 3) {
3454 for (i = 0; i < term->cols; i++)
3455 term->tabs[i] = FALSE;
3459 case 'r': /* DECSTBM: set scroll margins */
3460 compatibility(VT100);
3461 if (term->esc_nargs <= 2) {
3463 top = def(term->esc_args[0], 1) - 1;
3464 bot = (term->esc_nargs <= 1
3465 || term->esc_args[1] == 0 ?
3467 def(term->esc_args[1], term->rows)) - 1;
3468 if (bot >= term->rows)
3469 bot = term->rows - 1;
3470 /* VTTEST Bug 9 - if region is less than 2 lines
3471 * don't change region.
3473 if (bot - top > 0) {
3478 * I used to think the cursor should be
3479 * placed at the top of the newly marginned
3480 * area. Apparently not: VMS TPU falls over
3483 * Well actually it should for
3486 term->curs.y = (term->dec_om ?
3488 seen_disp_event(term);
3492 case 'm': /* SGR: set graphics rendition */
3495 * A VT100 without the AVO only had one
3496 * attribute, either underline or
3497 * reverse video depending on the
3498 * cursor type, this was selected by
3502 * This is sometimes DIM, eg on the
3505 * This is sometimes INVIS various ANSI.
3507 * This like 22 disables BOLD, DIM and INVIS
3509 * The ANSI colours appear on any
3510 * terminal that has colour (obviously)
3511 * but the interaction between sgr0 and
3512 * the colours varies but is usually
3513 * related to the background colour
3514 * erase item. The interaction between
3515 * colour attributes and the mono ones
3516 * is also very implementation
3519 * The 39 and 49 attributes are likely
3520 * to be unimplemented.
3523 for (i = 0; i < term->esc_nargs; i++) {
3524 switch (def(term->esc_args[i], 0)) {
3525 case 0: /* restore defaults */
3526 term->curr_attr = term->default_attr;
3528 case 1: /* enable bold */
3529 compatibility(VT100AVO);
3530 term->curr_attr |= ATTR_BOLD;
3532 case 21: /* (enable double underline) */
3533 compatibility(OTHER);
3534 case 4: /* enable underline */
3535 compatibility(VT100AVO);
3536 term->curr_attr |= ATTR_UNDER;
3538 case 5: /* enable blink */
3539 compatibility(VT100AVO);
3540 term->curr_attr |= ATTR_BLINK;
3542 case 6: /* SCO light bkgrd */
3543 compatibility(SCOANSI);
3544 term->blink_is_real = FALSE;
3545 term->curr_attr |= ATTR_BLINK;
3546 term_schedule_tblink(term);
3548 case 7: /* enable reverse video */
3549 term->curr_attr |= ATTR_REVERSE;
3551 case 10: /* SCO acs off */
3552 compatibility(SCOANSI);
3553 if (term->cfg.no_remote_charset) break;
3554 term->sco_acs = 0; break;
3555 case 11: /* SCO acs on */
3556 compatibility(SCOANSI);
3557 if (term->cfg.no_remote_charset) break;
3558 term->sco_acs = 1; break;
3559 case 12: /* SCO acs on, |0x80 */
3560 compatibility(SCOANSI);
3561 if (term->cfg.no_remote_charset) break;
3562 term->sco_acs = 2; break;
3563 case 22: /* disable bold */
3564 compatibility2(OTHER, VT220);
3565 term->curr_attr &= ~ATTR_BOLD;
3567 case 24: /* disable underline */
3568 compatibility2(OTHER, VT220);
3569 term->curr_attr &= ~ATTR_UNDER;
3571 case 25: /* disable blink */
3572 compatibility2(OTHER, VT220);
3573 term->curr_attr &= ~ATTR_BLINK;
3575 case 27: /* disable reverse video */
3576 compatibility2(OTHER, VT220);
3577 term->curr_attr &= ~ATTR_REVERSE;
3588 term->curr_attr &= ~ATTR_FGMASK;
3590 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
3600 /* aixterm-style bright foreground */
3601 term->curr_attr &= ~ATTR_FGMASK;
3603 ((term->esc_args[i] - 90 + 8)
3606 case 39: /* default-foreground */
3607 term->curr_attr &= ~ATTR_FGMASK;
3608 term->curr_attr |= ATTR_DEFFG;
3619 term->curr_attr &= ~ATTR_BGMASK;
3621 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
3631 /* aixterm-style bright background */
3632 term->curr_attr &= ~ATTR_BGMASK;
3634 ((term->esc_args[i] - 100 + 8)
3637 case 49: /* default-background */
3638 term->curr_attr &= ~ATTR_BGMASK;
3639 term->curr_attr |= ATTR_DEFBG;
3641 case 38: /* xterm 256-colour mode */
3642 if (i+2 < term->esc_nargs &&
3643 term->esc_args[i+1] == 5) {
3644 term->curr_attr &= ~ATTR_FGMASK;
3646 ((term->esc_args[i+2] & 0xFF)
3651 case 48: /* xterm 256-colour mode */
3652 if (i+2 < term->esc_nargs &&
3653 term->esc_args[i+1] == 5) {
3654 term->curr_attr &= ~ATTR_BGMASK;
3656 ((term->esc_args[i+2] & 0xFF)
3663 set_erase_char(term);
3666 case 's': /* save cursor */
3667 save_cursor(term, TRUE);
3669 case 'u': /* restore cursor */
3670 save_cursor(term, FALSE);
3671 seen_disp_event(term);
3673 case 't': /* DECSLPP: set page size - ie window height */
3675 * VT340/VT420 sequence DECSLPP, DEC only allows values
3676 * 24/25/36/48/72/144 other emulators (eg dtterm) use
3677 * illegal values (eg first arg 1..9) for window changing
3680 if (term->esc_nargs <= 1
3681 && (term->esc_args[0] < 1 ||
3682 term->esc_args[0] >= 24)) {
3683 compatibility(VT340TEXT);
3684 if (!term->cfg.no_remote_resize)
3685 request_resize(term->frontend, term->cols,
3686 def(term->esc_args[0], 24));
3688 } else if (term->esc_nargs >= 1 &&
3689 term->esc_args[0] >= 1 &&
3690 term->esc_args[0] < 24) {
3691 compatibility(OTHER);
3693 switch (term->esc_args[0]) {
3697 set_iconic(term->frontend, FALSE);
3700 set_iconic(term->frontend, TRUE);
3703 if (term->esc_nargs >= 3) {
3704 if (!term->cfg.no_remote_resize)
3705 move_window(term->frontend,
3706 def(term->esc_args[1], 0),
3707 def(term->esc_args[2], 0));
3711 /* We should resize the window to a given
3712 * size in pixels here, but currently our
3713 * resizing code isn't healthy enough to
3718 set_zorder(term->frontend, TRUE);
3721 /* move to bottom */
3722 set_zorder(term->frontend, FALSE);
3725 refresh_window(term->frontend);
3728 if (term->esc_nargs >= 3) {
3729 if (!term->cfg.no_remote_resize)
3730 request_resize(term->frontend,
3731 def(term->esc_args[2], term->cfg.width),
3732 def(term->esc_args[1], term->cfg.height));
3736 if (term->esc_nargs >= 2)
3737 set_zoomed(term->frontend,
3743 ldisc_send(term->ldisc,
3744 is_iconic(term->frontend) ?
3745 "\033[1t" : "\033[2t", 4, 0);
3749 get_window_pos(term->frontend, &x, &y);
3750 len = sprintf(buf, "\033[3;%d;%dt", x, y);
3751 ldisc_send(term->ldisc, buf, len, 0);
3756 get_window_pixels(term->frontend, &x, &y);
3757 len = sprintf(buf, "\033[4;%d;%dt", x, y);
3758 ldisc_send(term->ldisc, buf, len, 0);
3763 len = sprintf(buf, "\033[8;%d;%dt",
3764 term->rows, term->cols);
3765 ldisc_send(term->ldisc, buf, len, 0);
3770 * Hmmm. Strictly speaking we
3771 * should return `the size of the
3772 * screen in characters', but
3773 * that's not easy: (a) window
3774 * furniture being what it is it's
3775 * hard to compute, and (b) in
3776 * resize-font mode maximising the
3777 * window wouldn't change the
3778 * number of characters. *shrug*. I
3779 * think we'll ignore it for the
3780 * moment and see if anyone
3781 * complains, and then ask them
3782 * what they would like it to do.
3787 !term->cfg.no_remote_qtitle) {
3788 p = get_window_title(term->frontend, TRUE);
3790 ldisc_send(term->ldisc, "\033]L", 3, 0);
3791 ldisc_send(term->ldisc, p, len, 0);
3792 ldisc_send(term->ldisc, "\033\\", 2, 0);
3797 !term->cfg.no_remote_qtitle) {
3798 p = get_window_title(term->frontend,FALSE);
3800 ldisc_send(term->ldisc, "\033]l", 3, 0);
3801 ldisc_send(term->ldisc, p, len, 0);
3802 ldisc_send(term->ldisc, "\033\\", 2, 0);
3808 case 'S': /* SU: Scroll up */
3809 compatibility(SCOANSI);
3810 scroll(term, term->marg_t, term->marg_b,
3811 def(term->esc_args[0], 1), TRUE);
3812 term->wrapnext = FALSE;
3813 seen_disp_event(term);
3815 case 'T': /* SD: Scroll down */
3816 compatibility(SCOANSI);
3817 scroll(term, term->marg_t, term->marg_b,
3818 -def(term->esc_args[0], 1), TRUE);
3819 term->wrapnext = FALSE;
3820 seen_disp_event(term);
3822 case ANSI('|', '*'): /* DECSNLS */
3824 * Set number of lines on screen
3825 * VT420 uses VGA like hardware and can
3826 * support any size in reasonable range
3827 * (24..49 AIUI) with no default specified.
3829 compatibility(VT420);
3830 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
3831 if (!term->cfg.no_remote_resize)
3832 request_resize(term->frontend, term->cols,
3833 def(term->esc_args[0],
3838 case ANSI('|', '$'): /* DECSCPP */
3840 * Set number of columns per page
3841 * Docs imply range is only 80 or 132, but
3844 compatibility(VT340TEXT);
3845 if (term->esc_nargs <= 1) {
3846 if (!term->cfg.no_remote_resize)
3847 request_resize(term->frontend,
3848 def(term->esc_args[0],
3849 term->cfg.width), term->rows);
3853 case 'X': /* ECH: write N spaces w/o moving cursor */
3854 /* XXX VTTEST says this is vt220, vt510 manual
3856 compatibility(ANSIMIN);
3858 int n = def(term->esc_args[0], 1);
3860 int p = term->curs.x;
3861 termline *cline = scrlineptr(term->curs.y);
3863 if (n > term->cols - term->curs.x)
3864 n = term->cols - term->curs.x;
3865 cursplus = term->curs;
3867 check_boundary(term, term->curs.x, term->curs.y);
3868 check_boundary(term, term->curs.x+n, term->curs.y);
3869 check_selection(term, term->curs, cursplus);
3871 copy_termchar(cline, p++,
3873 seen_disp_event(term);
3876 case 'x': /* DECREQTPARM: report terminal characteristics */
3877 compatibility(VT100);
3880 int i = def(term->esc_args[0], 0);
3881 if (i == 0 || i == 1) {
3882 strcpy(buf, "\033[2;1;1;112;112;1;0x");
3884 ldisc_send(term->ldisc, buf, 20, 0);
3889 compatibility(OTHER);
3891 int i = def(term->esc_args[0], 1);
3892 pos old_curs = term->curs;
3894 for(;i>0 && term->curs.x>0; i--) {
3897 } while (term->curs.x >0 &&
3898 !term->tabs[term->curs.x]);
3900 check_selection(term, old_curs, term->curs);
3903 case ANSI('c', '='): /* Hide or Show Cursor */
3904 compatibility(SCOANSI);
3905 switch(term->esc_args[0]) {
3906 case 0: /* hide cursor */
3907 term->cursor_on = FALSE;
3909 case 1: /* restore cursor */
3910 term->big_cursor = FALSE;
3911 term->cursor_on = TRUE;
3913 case 2: /* block cursor */
3914 term->big_cursor = TRUE;
3915 term->cursor_on = TRUE;
3919 case ANSI('C', '='):
3921 * set cursor start on scanline esc_args[0] and
3922 * end on scanline esc_args[1].If you set
3923 * the bottom scan line to a value less than
3924 * the top scan line, the cursor will disappear.
3926 compatibility(SCOANSI);
3927 if (term->esc_nargs >= 2) {
3928 if (term->esc_args[0] > term->esc_args[1])
3929 term->cursor_on = FALSE;
3931 term->cursor_on = TRUE;
3934 case ANSI('D', '='):
3935 compatibility(SCOANSI);
3936 term->blink_is_real = FALSE;
3937 term_schedule_tblink(term);
3938 if (term->esc_args[0]>=1)
3939 term->curr_attr |= ATTR_BLINK;
3941 term->curr_attr &= ~ATTR_BLINK;
3943 case ANSI('E', '='):
3944 compatibility(SCOANSI);
3945 term->blink_is_real = (term->esc_args[0] >= 1);
3946 term_schedule_tblink(term);
3948 case ANSI('F', '='): /* set normal foreground */
3949 compatibility(SCOANSI);
3950 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3952 (sco2ansicolour[term->esc_args[0] & 0x7] |
3953 (term->esc_args[0] & 0x8)) <<
3955 term->curr_attr &= ~ATTR_FGMASK;
3956 term->curr_attr |= colour;
3957 term->default_attr &= ~ATTR_FGMASK;
3958 term->default_attr |= colour;
3959 set_erase_char(term);
3962 case ANSI('G', '='): /* set normal background */
3963 compatibility(SCOANSI);
3964 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
3966 (sco2ansicolour[term->esc_args[0] & 0x7] |
3967 (term->esc_args[0] & 0x8)) <<
3969 term->curr_attr &= ~ATTR_BGMASK;
3970 term->curr_attr |= colour;
3971 term->default_attr &= ~ATTR_BGMASK;
3972 term->default_attr |= colour;
3973 set_erase_char(term);
3976 case ANSI('L', '='):
3977 compatibility(SCOANSI);
3978 term->use_bce = (term->esc_args[0] <= 0);
3979 set_erase_char(term);
3981 case ANSI('p', '"'): /* DECSCL: set compat level */
3983 * Allow the host to make this emulator a
3984 * 'perfect' VT102. This first appeared in
3985 * the VT220, but we do need to get back to
3986 * PuTTY mode so I won't check it.
3988 * The arg in 40..42,50 are a PuTTY extension.
3989 * The 2nd arg, 8bit vs 7bit is not checked.
3991 * Setting VT102 mode should also change
3992 * the Fkeys to generate PF* codes as a
3993 * real VT102 has no Fkeys. The VT220 does
3994 * this, F11..F13 become ESC,BS,LF other
3995 * Fkeys send nothing.
3997 * Note ESC c will NOT change this!
4000 switch (term->esc_args[0]) {
4002 term->compatibility_level &= ~TM_VTXXX;
4003 term->compatibility_level |= TM_VT102;
4006 term->compatibility_level &= ~TM_VTXXX;
4007 term->compatibility_level |= TM_VT220;
4011 if (term->esc_args[0] > 60 &&
4012 term->esc_args[0] < 70)
4013 term->compatibility_level |= TM_VTXXX;
4017 term->compatibility_level &= TM_VTXXX;
4020 term->compatibility_level = TM_PUTTY;
4023 term->compatibility_level = TM_SCOANSI;
4027 term->compatibility_level = TM_PUTTY;
4033 /* Change the response to CSI c */
4034 if (term->esc_args[0] == 50) {
4037 strcpy(term->id_string, "\033[?");
4038 for (i = 1; i < term->esc_nargs; i++) {
4040 strcat(term->id_string, ";");
4041 sprintf(lbuf, "%d", term->esc_args[i]);
4042 strcat(term->id_string, lbuf);
4044 strcat(term->id_string, "c");
4047 /* Is this a good idea ?
4048 * Well we should do a soft reset at this point ...
4050 if (!has_compat(VT420) && has_compat(VT100)) {
4051 if (!term->cfg.no_remote_resize) {
4052 if (term->reset_132)
4053 request_resize(132, 24);
4055 request_resize(80, 24);
4063 term->osc_w = FALSE;
4065 case 'P': /* Linux palette sequence */
4066 term->termstate = SEEN_OSC_P;
4067 term->osc_strlen = 0;
4069 case 'R': /* Linux palette reset */
4070 palette_reset(term->frontend);
4071 term_invalidate(term);
4072 term->termstate = TOPLEVEL;
4074 case 'W': /* word-set */
4075 term->termstate = SEEN_OSC_W;
4088 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4092 * Grotty hack to support xterm and DECterm title
4093 * sequences concurrently.
4095 if (term->esc_args[0] == 2) {
4096 term->esc_args[0] = 1;
4099 /* else fall through */
4101 term->termstate = OSC_STRING;
4102 term->osc_strlen = 0;
4107 * This OSC stuff is EVIL. It takes just one character to get into
4108 * sysline mode and it's not initially obvious how to get out.
4109 * So I've added CR and LF as string aborts.
4110 * This shouldn't effect compatibility as I believe embedded
4111 * control characters are supposed to be interpreted (maybe?)
4112 * and they don't display anything useful anyway.
4116 if (c == '\012' || c == '\015') {
4117 term->termstate = TOPLEVEL;
4118 } else if (c == 0234 || c == '\007') {
4120 * These characters terminate the string; ST and BEL
4121 * terminate the sequence and trigger instant
4122 * processing of it, whereas ESC goes back to SEEN_ESC
4123 * mode unless it is followed by \, in which case it is
4124 * synonymous with ST in the first place.
4127 term->termstate = TOPLEVEL;
4128 } else if (c == '\033')
4129 term->termstate = OSC_MAYBE_ST;
4130 else if (term->osc_strlen < OSC_STR_MAX)
4131 term->osc_string[term->osc_strlen++] = (char)c;
4135 int max = (term->osc_strlen == 0 ? 21 : 15);
4137 if ((int)c >= '0' && (int)c <= '9')
4139 else if ((int)c >= 'A' && (int)c <= 'A' + max - 10)
4141 else if ((int)c >= 'a' && (int)c <= 'a' + max - 10)
4144 term->termstate = TOPLEVEL;
4147 term->osc_string[term->osc_strlen++] = val;
4148 if (term->osc_strlen >= 7) {
4149 palette_set(term->frontend, term->osc_string[0],
4150 term->osc_string[1] * 16 + term->osc_string[2],
4151 term->osc_string[3] * 16 + term->osc_string[4],
4152 term->osc_string[5] * 16 + term->osc_string[6]);
4153 term_invalidate(term);
4154 term->termstate = TOPLEVEL;
4170 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
4173 term->termstate = OSC_STRING;
4174 term->osc_strlen = 0;
4178 term->termstate = TOPLEVEL;
4179 seen_disp_event(term);
4182 move(term, term->curs.x, term->curs.y - 1, 1);
4185 move(term, term->curs.x, term->curs.y + 1, 1);
4188 move(term, term->curs.x + 1, term->curs.y, 1);
4191 move(term, term->curs.x - 1, term->curs.y, 1);
4194 * From the VT100 Manual
4195 * NOTE: The special graphics characters in the VT100
4196 * are different from those in the VT52
4198 * From VT102 manual:
4199 * 137 _ Blank - Same
4200 * 140 ` Reserved - Humm.
4201 * 141 a Solid rectangle - Similar
4202 * 142 b 1/ - Top half of fraction for the
4203 * 143 c 3/ - subscript numbers below.
4206 * 146 f Degrees - Same
4207 * 147 g Plus or minus - Same
4209 * 151 i Ellipsis (dots)
4212 * 154 l Bar at scan 0
4213 * 155 m Bar at scan 1
4214 * 156 n Bar at scan 2
4215 * 157 o Bar at scan 3 - Similar
4216 * 160 p Bar at scan 4 - Similar
4217 * 161 q Bar at scan 5 - Similar
4218 * 162 r Bar at scan 6 - Same
4219 * 163 s Bar at scan 7 - Similar
4234 term->cset_attr[term->cset = 0] = CSET_LINEDRW;
4237 term->cset_attr[term->cset = 0] = CSET_ASCII;
4240 move(term, 0, 0, 0);
4243 if (term->curs.y == 0)
4244 scroll(term, 0, term->rows - 1, -1, TRUE);
4245 else if (term->curs.y > 0)
4247 term->wrapnext = FALSE;
4250 erase_lots(term, FALSE, FALSE, TRUE);
4254 erase_lots(term, TRUE, FALSE, TRUE);
4258 /* XXX Print cursor line */
4261 /* XXX Start controller mode */
4264 /* XXX Stop controller mode */
4268 term->termstate = VT52_Y1;
4272 ldisc_send(term->ldisc, "\033/Z", 3, 0);
4275 term->app_keypad_keys = TRUE;
4278 term->app_keypad_keys = FALSE;
4281 /* XXX This should switch to VT100 mode not current or default
4282 * VT mode. But this will only have effect in a VT220+
4285 term->vt52_mode = FALSE;
4286 term->blink_is_real = term->cfg.blinktext;
4287 term_schedule_tblink(term);
4291 /* XXX Enter auto print mode */
4294 /* XXX Exit auto print mode */
4297 /* XXX Print screen */
4303 /* compatibility(ATARI) */
4304 move(term, 0, 0, 0);
4305 erase_lots(term, FALSE, FALSE, TRUE);
4309 /* compatibility(ATARI) */
4310 if (term->curs.y <= term->marg_b)
4311 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
4314 /* compatibility(ATARI) */
4315 if (term->curs.y <= term->marg_b)
4316 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
4319 /* compatibility(ATARI) */
4320 term->termstate = VT52_FG;
4323 /* compatibility(ATARI) */
4324 term->termstate = VT52_BG;
4327 /* compatibility(ATARI) */
4328 erase_lots(term, FALSE, TRUE, FALSE);
4332 /* compatibility(ATARI) */
4333 term->cursor_on = TRUE;
4336 /* compatibility(ATARI) */
4337 term->cursor_on = FALSE;
4339 /* case 'j': Save cursor position - broken on ST */
4340 /* case 'k': Restore cursor position */
4342 /* compatibility(ATARI) */
4343 erase_lots(term, TRUE, TRUE, TRUE);
4345 term->wrapnext = FALSE;
4348 /* compatibility(ATARI) */
4349 erase_lots(term, TRUE, TRUE, FALSE);
4352 /* compatibility(ATARI) */
4353 term->curr_attr |= ATTR_REVERSE;
4356 /* compatibility(ATARI) */
4357 term->curr_attr &= ~ATTR_REVERSE;
4359 case 'v': /* wrap Autowrap on - Wyse style */
4360 /* compatibility(ATARI) */
4363 case 'w': /* Autowrap off */
4364 /* compatibility(ATARI) */
4369 /* compatibility(OTHER) */
4370 term->vt52_bold = FALSE;
4371 term->curr_attr = ATTR_DEFAULT;
4372 set_erase_char(term);
4375 /* compatibility(VI50) */
4376 term->curr_attr |= ATTR_UNDER;
4379 /* compatibility(VI50) */
4380 term->curr_attr &= ~ATTR_UNDER;
4383 /* compatibility(VI50) */
4384 term->vt52_bold = TRUE;
4385 term->curr_attr |= ATTR_BOLD;
4388 /* compatibility(VI50) */
4389 term->vt52_bold = FALSE;
4390 term->curr_attr &= ~ATTR_BOLD;
4396 term->termstate = VT52_Y2;
4397 move(term, term->curs.x, c - ' ', 0);
4400 term->termstate = TOPLEVEL;
4401 move(term, c - ' ', term->curs.y, 0);
4406 term->termstate = TOPLEVEL;
4407 term->curr_attr &= ~ATTR_FGMASK;
4408 term->curr_attr &= ~ATTR_BOLD;
4409 term->curr_attr |= (c & 0xF) << ATTR_FGSHIFT;
4410 set_erase_char(term);
4413 term->termstate = TOPLEVEL;
4414 term->curr_attr &= ~ATTR_BGMASK;
4415 term->curr_attr &= ~ATTR_BLINK;
4416 term->curr_attr |= (c & 0xF) << ATTR_BGSHIFT;
4417 set_erase_char(term);
4420 default: break; /* placate gcc warning about enum use */
4422 if (term->selstate != NO_SELECTION) {
4423 pos cursplus = term->curs;
4425 check_selection(term, term->curs, cursplus);
4429 term_print_flush(term);
4430 if (term->cfg.logflush)
4431 logflush(term->logctx);
4435 * To prevent having to run the reasonably tricky bidi algorithm
4436 * too many times, we maintain a cache of the last lineful of data
4437 * fed to the algorithm on each line of the display.
4439 static int term_bidi_cache_hit(Terminal *term, int line,
4440 termchar *lbefore, int width)
4444 if (!term->pre_bidi_cache)
4445 return FALSE; /* cache doesn't even exist yet! */
4447 if (line >= term->bidi_cache_size)
4448 return FALSE; /* cache doesn't have this many lines */
4450 if (!term->pre_bidi_cache[line].chars)
4451 return FALSE; /* cache doesn't contain _this_ line */
4453 if (term->pre_bidi_cache[line].width != width)
4454 return FALSE; /* line is wrong width */
4456 for (i = 0; i < width; i++)
4457 if (!termchars_equal(term->pre_bidi_cache[line].chars+i, lbefore+i))
4458 return FALSE; /* line doesn't match cache */
4460 return TRUE; /* it didn't match. */
4463 static void term_bidi_cache_store(Terminal *term, int line, termchar *lbefore,
4464 termchar *lafter, bidi_char *wcTo,
4465 int width, int size)
4469 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
4470 int j = term->bidi_cache_size;
4471 term->bidi_cache_size = line+1;
4472 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
4473 term->bidi_cache_size,
4474 struct bidi_cache_entry);
4475 term->post_bidi_cache = sresize(term->post_bidi_cache,
4476 term->bidi_cache_size,
4477 struct bidi_cache_entry);
4478 while (j < term->bidi_cache_size) {
4479 term->pre_bidi_cache[j].chars =
4480 term->post_bidi_cache[j].chars = NULL;
4481 term->pre_bidi_cache[j].width =
4482 term->post_bidi_cache[j].width = -1;
4483 term->pre_bidi_cache[j].forward =
4484 term->post_bidi_cache[j].forward = NULL;
4485 term->pre_bidi_cache[j].backward =
4486 term->post_bidi_cache[j].backward = NULL;
4491 sfree(term->pre_bidi_cache[line].chars);
4492 sfree(term->post_bidi_cache[line].chars);
4493 sfree(term->post_bidi_cache[line].forward);
4494 sfree(term->post_bidi_cache[line].backward);
4496 term->pre_bidi_cache[line].width = width;
4497 term->pre_bidi_cache[line].chars = snewn(size, termchar);
4498 term->post_bidi_cache[line].width = width;
4499 term->post_bidi_cache[line].chars = snewn(size, termchar);
4500 term->post_bidi_cache[line].forward = snewn(width, int);
4501 term->post_bidi_cache[line].backward = snewn(width, int);
4503 memcpy(term->pre_bidi_cache[line].chars, lbefore, size * TSIZE);
4504 memcpy(term->post_bidi_cache[line].chars, lafter, size * TSIZE);
4505 memset(term->post_bidi_cache[line].forward, 0, width * sizeof(int));
4506 memset(term->post_bidi_cache[line].backward, 0, width * sizeof(int));
4508 for (i = 0; i < width; i++) {
4509 int p = wcTo[i].index;
4511 assert(0 <= p && p < width);
4513 term->post_bidi_cache[line].backward[i] = p;
4514 term->post_bidi_cache[line].forward[p] = i;
4519 * Prepare the bidi information for a screen line. Returns the
4520 * transformed list of termchars, or NULL if no transformation at
4521 * all took place (because bidi is disabled). If return was
4522 * non-NULL, auxiliary information such as the forward and reverse
4523 * mappings of permutation position are available in
4524 * term->post_bidi_cache[scr_y].*.
4526 static termchar *term_bidi_line(Terminal *term, struct termline *ldata,
4532 /* Do Arabic shaping and bidi. */
4533 if(!term->cfg.bidi || !term->cfg.arabicshaping) {
4535 if (!term_bidi_cache_hit(term, scr_y, ldata->chars, term->cols)) {
4537 if (term->wcFromTo_size < term->cols) {
4538 term->wcFromTo_size = term->cols;
4539 term->wcFrom = sresize(term->wcFrom, term->wcFromTo_size,
4541 term->wcTo = sresize(term->wcTo, term->wcFromTo_size,
4545 for(it=0; it<term->cols ; it++)
4547 unsigned long uc = (ldata->chars[it].chr);
4549 switch (uc & CSET_MASK) {
4551 if (!term->cfg.rawcnp) {
4552 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4556 uc = term->ucsdata->unitab_line[uc & 0xFF];
4559 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4562 switch (uc & CSET_MASK) {
4564 uc = term->ucsdata->unitab_font[uc & 0xFF];
4567 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4571 term->wcFrom[it].origwc = term->wcFrom[it].wc =
4573 term->wcFrom[it].index = it;
4577 do_bidi(term->wcFrom, term->cols);
4579 /* this is saved iff done from inside the shaping */
4580 if(!term->cfg.bidi && term->cfg.arabicshaping)
4581 for(it=0; it<term->cols; it++)
4582 term->wcTo[it] = term->wcFrom[it];
4584 if(!term->cfg.arabicshaping)
4585 do_shape(term->wcFrom, term->wcTo, term->cols);
4587 if (term->ltemp_size < ldata->size) {
4588 term->ltemp_size = ldata->size;
4589 term->ltemp = sresize(term->ltemp, term->ltemp_size,
4593 memcpy(term->ltemp, ldata->chars, ldata->size * TSIZE);
4595 for(it=0; it<term->cols ; it++)
4597 term->ltemp[it] = ldata->chars[term->wcTo[it].index];
4598 if (term->ltemp[it].cc_next)
4599 term->ltemp[it].cc_next -=
4600 it - term->wcTo[it].index;
4602 if (term->wcTo[it].origwc != term->wcTo[it].wc)
4603 term->ltemp[it].chr = term->wcTo[it].wc;
4605 term_bidi_cache_store(term, scr_y, ldata->chars,
4606 term->ltemp, term->wcTo,
4607 term->cols, ldata->size);
4609 lchars = term->ltemp;
4611 lchars = term->post_bidi_cache[scr_y].chars;
4621 * Given a context, update the window. Out of paranoia, we don't
4622 * allow WM_PAINT responses to do scrolling optimisations.
4624 static void do_paint(Terminal *term, Context ctx, int may_optimise)
4626 int i, j, our_curs_y, our_curs_x;
4631 #ifdef OPTIMISE_SCROLL
4632 struct scrollregion *sr;
4633 #endif /* OPTIMISE_SCROLL */
4637 ch = snewn(chlen, wchar_t);
4639 newline = snewn(term->cols, termchar);
4641 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
4644 * screen array, disptop, scrtop,
4646 * cfg.blinkpc, blink_is_real, tblinker,
4647 * curs.y, curs.x, cblinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
4650 /* Has the cursor position or type changed ? */
4651 if (term->cursor_on) {
4652 if (term->has_focus) {
4653 if (term->cblinker || !term->cfg.blink_cur)
4654 cursor = TATTR_ACTCURS;
4658 cursor = TATTR_PASCURS;
4660 cursor |= TATTR_RIGHTCURS;
4663 our_curs_y = term->curs.y - term->disptop;
4666 * Adjust the cursor position:
4668 * - in the case where it's resting on the right-hand half
4669 * of a CJK wide character. xterm's behaviour here,
4670 * which seems adequate to me, is to display the cursor
4671 * covering the _whole_ character, exactly as if it were
4672 * one space to the left.
4674 termline *ldata = lineptr(term->curs.y);
4677 our_curs_x = term->curs.x;
4679 if ( (lchars = term_bidi_line(term, ldata, our_curs_y)) != NULL) {
4680 our_curs_x = term->post_bidi_cache[our_curs_y].forward[our_curs_x];
4682 lchars = ldata->chars;
4684 if (our_curs_x > 0 &&
4685 lchars[our_curs_x].chr == UCSWIDE)
4692 * If the cursor is not where it was last time we painted, and
4693 * its previous position is visible on screen, invalidate its
4694 * previous position.
4696 if (term->dispcursy >= 0 &&
4697 (term->curstype != cursor ||
4698 term->dispcursy != our_curs_y ||
4699 term->dispcursx != our_curs_x)) {
4700 termchar *dispcurs = term->disptext[term->dispcursy]->chars +
4703 if (term->dispcursx > 0 && dispcurs->chr == UCSWIDE)
4704 dispcurs[-1].attr |= ATTR_INVALID;
4705 if (term->dispcursx < term->cols-1 && dispcurs[1].chr == UCSWIDE)
4706 dispcurs[1].attr |= ATTR_INVALID;
4707 dispcurs->attr |= ATTR_INVALID;
4711 term->dispcursx = term->dispcursy = -1;
4713 #ifdef OPTIMISE_SCROLL
4715 sr = term->scrollhead;
4717 struct scrollregion *next = sr->next;
4718 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
4722 term->scrollhead = term->scrolltail = NULL;
4723 #endif /* OPTIMISE_SCROLL */
4725 /* The normal screen data */
4726 for (i = 0; i < term->rows; i++) {
4729 int dirty_line, dirty_run, selected;
4730 unsigned long attr = 0, cset = 0;
4731 int updated_line = 0;
4734 int last_run_dirty = 0;
4735 int laststart, dirtyrect;
4738 scrpos.y = i + term->disptop;
4739 ldata = lineptr(scrpos.y);
4741 /* Do Arabic shaping and bidi. */
4742 lchars = term_bidi_line(term, ldata, i);
4744 backward = term->post_bidi_cache[i].backward;
4746 lchars = ldata->chars;
4751 * First loop: work along the line deciding what we want
4752 * each character cell to look like.
4754 for (j = 0; j < term->cols; j++) {
4755 unsigned long tattr, tchar;
4756 termchar *d = lchars + j;
4757 scrpos.x = backward ? backward[j] : j;
4762 if (!term->cfg.ansi_colour)
4763 tattr = (tattr & ~(ATTR_FGMASK | ATTR_BGMASK)) |
4764 ATTR_DEFFG | ATTR_DEFBG;
4766 if (!term->cfg.xterm_256_colour) {
4768 colour = (tattr & ATTR_FGMASK) >> ATTR_FGSHIFT;
4769 if (colour >= 16 && colour < 256)
4770 tattr = (tattr &~ ATTR_FGMASK) | ATTR_DEFFG;
4771 colour = (tattr & ATTR_BGMASK) >> ATTR_BGSHIFT;
4772 if (colour >= 16 && colour < 256)
4773 tattr = (tattr &~ ATTR_BGMASK) | ATTR_DEFBG;
4776 switch (tchar & CSET_MASK) {
4778 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
4781 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
4784 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
4787 if (j < term->cols-1 && d[1].chr == UCSWIDE)
4790 /* Video reversing things */
4791 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
4792 if (term->seltype == LEXICOGRAPHIC)
4793 selected = (posle(term->selstart, scrpos) &&
4794 poslt(scrpos, term->selend));
4796 selected = (posPle(term->selstart, scrpos) &&
4797 posPlt(scrpos, term->selend));
4801 ^ (selected ? ATTR_REVERSE : 0));
4803 /* 'Real' blinking ? */
4804 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
4805 if (term->has_focus && term->tblinker) {
4806 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
4808 tattr &= ~ATTR_BLINK;
4812 * Check the font we'll _probably_ be using to see if
4813 * the character is wide when we don't want it to be.
4815 if (tchar != term->disptext[i]->chars[j].chr ||
4816 tattr != (term->disptext[i]->chars[j].attr &~
4817 (ATTR_NARROW | DATTR_MASK))) {
4818 if ((tattr & ATTR_WIDE) == 0 && char_width(ctx, tchar) == 2)
4819 tattr |= ATTR_NARROW;
4820 } else if (term->disptext[i]->chars[j].attr & ATTR_NARROW)
4821 tattr |= ATTR_NARROW;
4823 if (i == our_curs_y && j == our_curs_x) {
4825 term->curstype = cursor;
4826 term->dispcursx = j;
4827 term->dispcursy = i;
4831 newline[j].attr = tattr;
4832 newline[j].chr = tchar;
4833 /* Combining characters are still read from lchars */
4834 newline[j].cc_next = 0;
4838 * Now loop over the line again, noting where things have
4841 * During this loop, we keep track of where we last saw
4842 * DATTR_STARTRUN. Any mismatch automatically invalidates
4843 * _all_ of the containing run that was last printed: that
4844 * is, any rectangle that was drawn in one go in the
4845 * previous update should be either left completely alone
4846 * or overwritten in its entirety. This, along with the
4847 * expectation that front ends clip all text runs to their
4848 * bounding rectangle, should solve any possible problems
4849 * with fonts that overflow their character cells.
4853 for (j = 0; j < term->cols; j++) {
4854 if (term->disptext[i]->chars[j].attr & DATTR_STARTRUN) {
4859 if (term->disptext[i]->chars[j].chr != newline[j].chr ||
4860 (term->disptext[i]->chars[j].attr &~ DATTR_MASK)
4861 != newline[j].attr) {
4865 for (k = laststart; k < j; k++)
4866 term->disptext[i]->chars[k].attr |= ATTR_INVALID;
4873 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
4877 * Finally, loop once more and actually do the drawing.
4879 dirty_run = dirty_line = (ldata->lattr !=
4880 term->disptext[i]->lattr);
4881 term->disptext[i]->lattr = ldata->lattr;
4883 for (j = 0; j < term->cols; j++) {
4884 unsigned long tattr, tchar;
4885 int break_run, do_copy;
4886 termchar *d = lchars + j;
4888 tattr = newline[j].attr;
4889 tchar = newline[j].chr;
4891 if ((term->disptext[i]->chars[j].attr ^ tattr) & ATTR_WIDE)
4894 break_run = ((tattr ^ attr) & term->attr_mask) != 0;
4896 /* Special hack for VT100 Linedraw glyphs */
4897 if (tchar >= 0x23BA && tchar <= 0x23BD)
4901 * Separate out sequences of characters that have the
4902 * same CSET, if that CSET is a magic one.
4904 if (CSET_OF(tchar) != cset)
4908 * Break on both sides of any combined-character cell.
4910 if (d->cc_next != 0 ||
4911 (j > 0 && d[-1].cc_next != 0))
4914 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
4915 if (term->disptext[i]->chars[j].chr == tchar &&
4916 (term->disptext[i]->chars[j].attr &~ DATTR_MASK) == tattr)
4918 else if (!dirty_run && ccount == 1)
4923 if ((dirty_run || last_run_dirty) && ccount > 0) {
4924 do_text(ctx, start, i, ch, ccount, attr,
4926 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
4927 do_cursor(ctx, start, i, ch, ccount, attr,
4935 cset = CSET_OF(tchar);
4936 if (term->ucsdata->dbcs_screenfont)
4937 last_run_dirty = dirty_run;
4938 dirty_run = dirty_line;
4942 if (!termchars_equal_override(&term->disptext[i]->chars[j],
4948 if (ccount >= chlen) {
4949 chlen = ccount + 256;
4950 ch = sresize(ch, chlen, wchar_t);
4952 ch[ccount++] = (wchar_t) tchar;
4957 while (dd->cc_next) {
4958 unsigned long schar;
4963 switch (schar & CSET_MASK) {
4965 schar = term->ucsdata->unitab_line[schar & 0xFF];
4968 schar = term->ucsdata->unitab_xterm[schar & 0xFF];
4971 schar = term->ucsdata->unitab_scoacs[schar&0xFF];
4975 if (ccount >= chlen) {
4976 chlen = ccount + 256;
4977 ch = sresize(ch, chlen, wchar_t);
4979 ch[ccount++] = (wchar_t) schar;
4982 attr |= TATTR_COMBINING;
4986 copy_termchar(term->disptext[i], j, d);
4987 term->disptext[i]->chars[j].chr = tchar;
4988 term->disptext[i]->chars[j].attr = tattr;
4990 term->disptext[i]->chars[j].attr |= DATTR_STARTRUN;
4993 /* If it's a wide char step along to the next one. */
4994 if (tattr & ATTR_WIDE) {
4995 if (++j < term->cols) {
4998 * By construction above, the cursor should not
4999 * be on the right-hand half of this character.
5002 assert(!(i == our_curs_y && j == our_curs_x));
5003 if (!termchars_equal(&term->disptext[i]->chars[j], d))
5005 copy_termchar(term->disptext[i], j, d);
5009 if (dirty_run && ccount > 0) {
5010 do_text(ctx, start, i, ch, ccount, attr,
5012 if (attr & (TATTR_ACTCURS | TATTR_PASCURS))
5013 do_cursor(ctx, start, i, ch, ccount, attr,
5027 * Invalidate the whole screen so it will be repainted in full.
5029 void term_invalidate(Terminal *term)
5033 for (i = 0; i < term->rows; i++)
5034 for (j = 0; j < term->cols; j++)
5035 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5037 term_schedule_update(term);
5041 * Paint the window in response to a WM_PAINT message.
5043 void term_paint(Terminal *term, Context ctx,
5044 int left, int top, int right, int bottom, int immediately)
5047 if (left < 0) left = 0;
5048 if (top < 0) top = 0;
5049 if (right >= term->cols) right = term->cols-1;
5050 if (bottom >= term->rows) bottom = term->rows-1;
5052 for (i = top; i <= bottom && i < term->rows; i++) {
5053 if ((term->disptext[i]->lattr & LATTR_MODE) == LATTR_NORM)
5054 for (j = left; j <= right && j < term->cols; j++)
5055 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5057 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
5058 term->disptext[i]->chars[j].attr |= ATTR_INVALID;
5062 do_paint (term, ctx, FALSE);
5064 term_schedule_update(term);
5069 * Attempt to scroll the scrollback. The second parameter gives the
5070 * position we want to scroll to; the first is +1 to denote that
5071 * this position is relative to the beginning of the scrollback, -1
5072 * to denote it is relative to the end, and 0 to denote that it is
5073 * relative to the current position.
5075 void term_scroll(Terminal *term, int rel, int where)
5077 int sbtop = -sblines(term);
5078 #ifdef OPTIMISE_SCROLL
5079 int olddisptop = term->disptop;
5081 #endif /* OPTIMISE_SCROLL */
5083 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
5084 if (term->disptop < sbtop)
5085 term->disptop = sbtop;
5086 if (term->disptop > 0)
5089 #ifdef OPTIMISE_SCROLL
5090 shift = (term->disptop - olddisptop);
5091 if (shift < term->rows && shift > -term->rows)
5092 scroll_display(term, 0, term->rows - 1, shift);
5093 #endif /* OPTIMISE_SCROLL */
5098 * Helper routine for clipme(): growing buffer.
5101 int buflen; /* amount of allocated space in textbuf/attrbuf */
5102 int bufpos; /* amount of actual data */
5103 wchar_t *textbuf; /* buffer for copied text */
5104 wchar_t *textptr; /* = textbuf + bufpos (current insertion point) */
5105 int *attrbuf; /* buffer for copied attributes */
5106 int *attrptr; /* = attrbuf + bufpos */
5109 static void clip_addchar(clip_workbuf *b, wchar_t chr, int attr)
5111 if (b->bufpos >= b->buflen) {
5113 b->textbuf = sresize(b->textbuf, b->buflen, wchar_t);
5114 b->textptr = b->textbuf + b->bufpos;
5115 b->attrbuf = sresize(b->attrbuf, b->buflen, int);
5116 b->attrptr = b->attrbuf + b->bufpos;
5118 *b->textptr++ = chr;
5119 *b->attrptr++ = attr;
5123 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
5131 buf.textptr = buf.textbuf = snewn(buf.buflen, wchar_t);
5132 buf.attrptr = buf.attrbuf = snewn(buf.buflen, int);
5134 old_top_x = top.x; /* needed for rect==1 */
5136 while (poslt(top, bottom)) {
5138 termline *ldata = lineptr(top.y);
5142 * nlpos will point at the maximum position on this line we
5143 * should copy up to. So we start it at the end of the
5147 nlpos.x = term->cols;
5150 * ... move it backwards if there's unused space at the end
5151 * of the line (and also set `nl' if this is the case,
5152 * because in normal selection mode this means we need a
5153 * newline at the end)...
5155 if (!(ldata->lattr & LATTR_WRAPPED)) {
5157 IS_SPACE_CHR(ldata->chars[nlpos.x - 1].chr) &&
5158 !ldata->chars[nlpos.x - 1].cc_next &&
5161 if (poslt(nlpos, bottom))
5163 } else if (ldata->lattr & LATTR_WRAPPED2) {
5164 /* Ignore the last char on the line in a WRAPPED2 line. */
5169 * ... and then clip it to the terminal x coordinate if
5170 * we're doing rectangular selection. (In this case we
5171 * still did the above, so that copying e.g. the right-hand
5172 * column from a table doesn't fill with spaces on the
5176 if (nlpos.x > bottom.x)
5178 nl = (top.y < bottom.y);
5181 while (poslt(top, bottom) && poslt(top, nlpos)) {
5184 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
5186 wchar_t cbuf[16], *p;
5190 if (ldata->chars[x].chr == UCSWIDE) {
5196 int uc = ldata->chars[x].chr;
5197 attr = ldata->chars[x].attr;
5199 switch (uc & CSET_MASK) {
5201 if (!term->cfg.rawcnp) {
5202 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5206 uc = term->ucsdata->unitab_line[uc & 0xFF];
5209 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5212 switch (uc & CSET_MASK) {
5214 uc = term->ucsdata->unitab_font[uc & 0xFF];
5217 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5221 set = (uc & CSET_MASK);
5222 c = (uc & ~CSET_MASK);
5226 if (DIRECT_FONT(uc)) {
5227 if (c >= ' ' && c != 0x7F) {
5231 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
5233 buf[1] = (char) (0xFF & ldata->chars[top.x + 1].chr);
5234 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
5238 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
5242 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
5249 for (p = cbuf; *p; p++)
5250 clip_addchar(&buf, *p, attr);
5252 if (ldata->chars[x].cc_next)
5253 x += ldata->chars[x].cc_next;
5261 for (i = 0; i < sel_nl_sz; i++)
5262 clip_addchar(&buf, sel_nl[i], 0);
5265 top.x = rect ? old_top_x : 0;
5269 #if SELECTION_NUL_TERMINATED
5270 clip_addchar(&buf, 0, 0);
5272 /* Finally, transfer all that to the clipboard. */
5273 write_clip(term->frontend, buf.textbuf, buf.attrbuf, buf.bufpos, desel);
5278 void term_copyall(Terminal *term)
5282 tree234 *screen = term->screen;
5283 top.y = -sblines(term);
5285 bottom.y = find_last_nonempty_line(term, screen);
5286 bottom.x = term->cols;
5287 clipme(term, top, bottom, 0, TRUE);
5291 * The wordness array is mainly for deciding the disposition of the
5292 * US-ASCII characters.
5294 static int wordtype(Terminal *term, int uc)
5297 int start, end, ctype;
5299 static const struct ucsword ucs_words[] = {
5305 0x037e, 0x037e, 1}, /* Greek question mark */
5307 0x0387, 0x0387, 1}, /* Greek ano teleia */
5309 0x055a, 0x055f, 1}, /* Armenian punctuation */
5311 0x0589, 0x0589, 1}, /* Armenian full stop */
5313 0x0700, 0x070d, 1}, /* Syriac punctuation */
5315 0x104a, 0x104f, 1}, /* Myanmar punctuation */
5317 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
5319 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
5321 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
5323 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
5325 0x1800, 0x180a, 1}, /* Mongolian punctuation */
5327 0x2000, 0x200a, 0}, /* Various spaces */
5329 0x2070, 0x207f, 2}, /* superscript */
5331 0x2080, 0x208f, 2}, /* subscript */
5333 0x200b, 0x27ff, 1}, /* punctuation and symbols */
5335 0x3000, 0x3000, 0}, /* ideographic space */
5337 0x3001, 0x3020, 1}, /* ideographic punctuation */
5339 0x303f, 0x309f, 3}, /* Hiragana */
5341 0x30a0, 0x30ff, 3}, /* Katakana */
5343 0x3300, 0x9fff, 3}, /* CJK Ideographs */
5345 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
5347 0xf900, 0xfaff, 3}, /* CJK Ideographs */
5349 0xfe30, 0xfe6b, 1}, /* punctuation forms */
5351 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
5353 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
5355 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
5357 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
5359 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
5363 const struct ucsword *wptr;
5365 switch (uc & CSET_MASK) {
5367 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
5370 uc = term->ucsdata->unitab_line[uc & 0xFF];
5373 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
5376 switch (uc & CSET_MASK) {
5378 uc = term->ucsdata->unitab_font[uc & 0xFF];
5381 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
5385 /* For DBCS fonts I can't do anything useful. Even this will sometimes
5386 * fail as there's such a thing as a double width space. :-(
5388 if (term->ucsdata->dbcs_screenfont &&
5389 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
5393 return term->wordness[uc];
5395 for (wptr = ucs_words; wptr->start; wptr++) {
5396 if (uc >= wptr->start && uc <= wptr->end)
5404 * Spread the selection outwards according to the selection mode.
5406 static pos sel_spread_half(Terminal *term, pos p, int dir)
5410 int topy = -sblines(term);
5412 ldata = lineptr(p.y);
5414 switch (term->selmode) {
5417 * In this mode, every character is a separate unit, except
5418 * for runs of spaces at the end of a non-wrapping line.
5420 if (!(ldata->lattr & LATTR_WRAPPED)) {
5421 termchar *q = ldata->chars + term->cols;
5422 while (q > ldata->chars &&
5423 IS_SPACE_CHR(q[-1].chr) && !q[-1].cc_next)
5425 if (q == ldata->chars + term->cols)
5427 if (p.x >= q - ldata->chars)
5428 p.x = (dir == -1 ? q - ldata->chars : term->cols - 1);
5433 * In this mode, the units are maximal runs of characters
5434 * whose `wordness' has the same value.
5436 wvalue = wordtype(term, UCSGET(ldata->chars, p.x));
5439 int maxcols = (ldata->lattr & LATTR_WRAPPED2 ?
5440 term->cols-1 : term->cols);
5441 if (p.x < maxcols-1) {
5442 if (wordtype(term, UCSGET(ldata->chars, p.x+1)) == wvalue)
5447 if (ldata->lattr & LATTR_WRAPPED) {
5449 ldata2 = lineptr(p.y+1);
5450 if (wordtype(term, UCSGET(ldata2->chars, 0))
5467 if (wordtype(term, UCSGET(ldata->chars, p.x-1)) == wvalue)
5476 ldata2 = lineptr(p.y-1);
5477 maxcols = (ldata2->lattr & LATTR_WRAPPED2 ?
5478 term->cols-1 : term->cols);
5479 if (ldata2->lattr & LATTR_WRAPPED) {
5480 if (wordtype(term, UCSGET(ldata2->chars, maxcols-1))
5498 * In this mode, every line is a unit.
5500 p.x = (dir == -1 ? 0 : term->cols - 1);
5508 static void sel_spread(Terminal *term)
5510 if (term->seltype == LEXICOGRAPHIC) {
5511 term->selstart = sel_spread_half(term, term->selstart, -1);
5512 decpos(term->selend);
5513 term->selend = sel_spread_half(term, term->selend, +1);
5514 incpos(term->selend);
5518 void term_do_paste(Terminal *term)
5523 get_clip(term->frontend, &data, &len);
5524 if (data && len > 0) {
5527 term_seen_key_event(term); /* pasted data counts */
5529 if (term->paste_buffer)
5530 sfree(term->paste_buffer);
5531 term->paste_pos = term->paste_hold = term->paste_len = 0;
5532 term->paste_buffer = snewn(len, wchar_t);
5535 while (p < data + len) {
5536 while (p < data + len &&
5537 !(p <= data + len - sel_nl_sz &&
5538 !memcmp(p, sel_nl, sizeof(sel_nl))))
5543 for (i = 0; i < p - q; i++) {
5544 term->paste_buffer[term->paste_len++] = q[i];
5548 if (p <= data + len - sel_nl_sz &&
5549 !memcmp(p, sel_nl, sizeof(sel_nl))) {
5550 term->paste_buffer[term->paste_len++] = '\015';
5556 /* Assume a small paste will be OK in one go. */
5557 if (term->paste_len < 256) {
5559 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
5560 if (term->paste_buffer)
5561 sfree(term->paste_buffer);
5562 term->paste_buffer = 0;
5563 term->paste_pos = term->paste_hold = term->paste_len = 0;
5566 get_clip(term->frontend, NULL, NULL);
5569 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
5570 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
5574 int raw_mouse = (term->xterm_mouse &&
5575 !term->cfg.no_mouse_rep &&
5576 !(term->cfg.mouse_override && shift));
5577 int default_seltype;
5581 if (a == MA_DRAG && !raw_mouse)
5582 term_scroll(term, 0, -1);
5584 if (y >= term->rows) {
5586 if (a == MA_DRAG && !raw_mouse)
5587 term_scroll(term, 0, +1);
5596 if (x >= term->cols)
5599 selpoint.y = y + term->disptop;
5600 ldata = lineptr(selpoint.y);
5602 if ((ldata->lattr & LATTR_MODE) != LATTR_NORM)
5606 * Transform x through the bidi algorithm to find the _logical_
5607 * click point from the physical one.
5609 if (term_bidi_line(term, ldata, y) != NULL) {
5610 x = term->post_bidi_cache[y].backward[x];
5617 * If we're in the middle of a selection operation, we ignore raw
5618 * mouse mode until it's done (we must have been not in raw mouse
5619 * mode when it started).
5620 * This makes use of Shift for selection reliable, and avoids the
5621 * host seeing mouse releases for which they never saw corresponding
5625 (term->selstate != ABOUT_TO) && (term->selstate != DRAGGING)) {
5626 int encstate = 0, r, c;
5633 encstate = 0x20; /* left button down */
5644 case MBT_WHEEL_DOWN:
5647 default: break; /* placate gcc warning about enum use */
5651 if (term->xterm_mouse == 1)
5657 term->mouse_is_down = 0;
5660 if (term->mouse_is_down == braw)
5662 term->mouse_is_down = braw;
5664 default: break; /* placate gcc warning about enum use */
5673 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
5674 ldisc_send(term->ldisc, abuf, 6, 0);
5680 * Set the selection type (rectangular or normal) at the start
5681 * of a selection attempt, from the state of Alt.
5683 if (!alt ^ !term->cfg.rect_select)
5684 default_seltype = RECTANGULAR;
5686 default_seltype = LEXICOGRAPHIC;
5688 if (term->selstate == NO_SELECTION) {
5689 term->seltype = default_seltype;
5692 if (bcooked == MBT_SELECT && a == MA_CLICK) {
5694 term->selstate = ABOUT_TO;
5695 term->seltype = default_seltype;
5696 term->selanchor = selpoint;
5697 term->selmode = SM_CHAR;
5698 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
5700 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
5701 term->selstate = DRAGGING;
5702 term->selstart = term->selanchor = selpoint;
5703 term->selend = term->selstart;
5704 incpos(term->selend);
5706 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
5707 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
5708 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
5710 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
5711 term->selstate == SELECTED) {
5712 if (term->seltype == LEXICOGRAPHIC) {
5714 * For normal selection, we extend by moving
5715 * whichever end of the current selection is closer
5718 if (posdiff(selpoint, term->selstart) <
5719 posdiff(term->selend, term->selstart) / 2) {
5720 term->selanchor = term->selend;
5721 decpos(term->selanchor);
5723 term->selanchor = term->selstart;
5727 * For rectangular selection, we have a choice of
5728 * _four_ places to put selanchor and selpoint: the
5729 * four corners of the selection.
5731 if (2*selpoint.x < term->selstart.x + term->selend.x)
5732 term->selanchor.x = term->selend.x-1;
5734 term->selanchor.x = term->selstart.x;
5736 if (2*selpoint.y < term->selstart.y + term->selend.y)
5737 term->selanchor.y = term->selend.y;
5739 term->selanchor.y = term->selstart.y;
5741 term->selstate = DRAGGING;
5743 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
5744 term->selanchor = selpoint;
5745 term->selstate = DRAGGING;
5746 if (term->seltype == LEXICOGRAPHIC) {
5748 * For normal selection, we set (selstart,selend) to
5749 * (selpoint,selanchor) in some order.
5751 if (poslt(selpoint, term->selanchor)) {
5752 term->selstart = selpoint;
5753 term->selend = term->selanchor;
5754 incpos(term->selend);
5756 term->selstart = term->selanchor;
5757 term->selend = selpoint;
5758 incpos(term->selend);
5762 * For rectangular selection, we may need to
5763 * interchange x and y coordinates (if the user has
5764 * dragged in the -x and +y directions, or vice versa).
5766 term->selstart.x = min(term->selanchor.x, selpoint.x);
5767 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
5768 term->selstart.y = min(term->selanchor.y, selpoint.y);
5769 term->selend.y = max(term->selanchor.y, selpoint.y);
5772 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
5774 if (term->selstate == DRAGGING) {
5776 * We've completed a selection. We now transfer the
5777 * data to the clipboard.
5779 clipme(term, term->selstart, term->selend,
5780 (term->seltype == RECTANGULAR), FALSE);
5781 term->selstate = SELECTED;
5783 term->selstate = NO_SELECTION;
5784 } else if (bcooked == MBT_PASTE
5786 #if MULTICLICK_ONLY_EVENT
5787 || a == MA_2CLK || a == MA_3CLK
5790 request_paste(term->frontend);
5796 void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
5797 unsigned int modifiers, unsigned int flags)
5801 int prependesc = FALSE;
5805 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
5806 for (i = 0; i < tlen; i++)
5807 fprintf(stderr, " %04x", (unsigned)text[i]);
5808 fprintf(stderr, "\n");
5812 if ((flags & PKF_REPEAT) && term->repeat_off)
5815 /* Currently, Meta always just prefixes everything with ESC. */
5816 if (modifiers & PKM_META)
5818 modifiers &= ~PKM_META;
5821 * Alt is only used for Alt+keypad, which isn't supported yet, so
5824 modifiers &= ~PKM_ALT;
5826 /* Standard local function keys */
5827 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
5829 if (keysym == PK_PAGEUP)
5830 /* scroll up one page */;
5831 if (keysym == PK_PAGEDOWN)
5832 /* scroll down on page */;
5833 if (keysym == PK_INSERT)
5834 term_do_paste(term);
5837 if (keysym == PK_PAGEUP)
5838 /* scroll up one line */;
5839 if (keysym == PK_PAGEDOWN)
5840 /* scroll down one line */;
5841 /* Control-Numlock for app-keypad mode switch */
5842 if (keysym == PK_PF1)
5843 term->app_keypad_keys ^= 1;
5847 if (modifiers & PKM_ALT) {
5848 /* Alt+F4 (close) */
5849 /* Alt+Return (full screen) */
5850 /* Alt+Space (system menu) */
5853 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
5854 text[0] >= 0x20 && text[0] <= 0x7e) {
5855 /* ASCII chars + Control */
5856 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
5857 (text[0] >= 0x61 && text[0] <= 0x7a))
5861 * Control-2 should return ^@ (0x00), Control-6 should return
5862 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
5863 * the DOS keyboard handling did it, and we have nothing better
5864 * to do with the key combo in question, we'll also map
5865 * Control-Backquote to ^\ (0x1C).
5868 case ' ': text[0] = 0x00; break;
5869 case '-': text[0] = 0x1f; break;
5870 case '/': text[0] = 0x1f; break;
5871 case '2': text[0] = 0x00; break;
5872 case '3': text[0] = 0x1b; break;
5873 case '4': text[0] = 0x1c; break;
5874 case '5': text[0] = 0x1d; break;
5875 case '6': text[0] = 0x1e; break;
5876 case '7': text[0] = 0x1f; break;
5877 case '8': text[0] = 0x7f; break;
5878 case '`': text[0] = 0x1c; break;
5883 /* Nethack keypad */
5884 if (term->cfg.nethack_keypad) {
5887 case PK_KP1: c = 'b'; break;
5888 case PK_KP2: c = 'j'; break;
5889 case PK_KP3: c = 'n'; break;
5890 case PK_KP4: c = 'h'; break;
5891 case PK_KP5: c = '.'; break;
5892 case PK_KP6: c = 'l'; break;
5893 case PK_KP7: c = 'y'; break;
5894 case PK_KP8: c = 'k'; break;
5895 case PK_KP9: c = 'u'; break;
5896 default: break; /* else gcc warns `enum value not used' */
5900 if (modifiers & PKM_CONTROL)
5902 else if (modifiers & PKM_SHIFT)
5910 /* Numeric Keypad */
5911 if (PK_ISKEYPAD(keysym)) {
5915 * In VT400 mode, PFn always emits an escape sequence. In
5916 * Linux and tilde modes, this only happens in app keypad mode.
5918 if (term->cfg.funky_type == FUNKY_VT400 ||
5919 ((term->cfg.funky_type == FUNKY_LINUX ||
5920 term->cfg.funky_type == FUNKY_TILDE) &&
5921 term->app_keypad_keys && !term->cfg.no_applic_k)) {
5923 case PK_PF1: xkey = 'P'; break;
5924 case PK_PF2: xkey = 'Q'; break;
5925 case PK_PF3: xkey = 'R'; break;
5926 case PK_PF4: xkey = 'S'; break;
5927 default: break; /* else gcc warns `enum value not used' */
5930 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
5932 case PK_KP0: xkey = 'p'; break;
5933 case PK_KP1: xkey = 'q'; break;
5934 case PK_KP2: xkey = 'r'; break;
5935 case PK_KP3: xkey = 's'; break;
5936 case PK_KP4: xkey = 't'; break;
5937 case PK_KP5: xkey = 'u'; break;
5938 case PK_KP6: xkey = 'v'; break;
5939 case PK_KP7: xkey = 'w'; break;
5940 case PK_KP8: xkey = 'x'; break;
5941 case PK_KP9: xkey = 'y'; break;
5942 case PK_KPDECIMAL: xkey = 'n'; break;
5943 case PK_KPENTER: xkey = 'M'; break;
5944 default: break; /* else gcc warns `enum value not used' */
5946 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
5948 * xterm can't see the layout of the keypad, so it has
5949 * to rely on the X keysyms returned by the keys.
5950 * Hence, we look at the strings here, not the PuTTY
5951 * keysyms (which describe the layout).
5955 if (modifiers & PKM_SHIFT)
5960 case '/': xkey = 'o'; break;
5961 case '*': xkey = 'j'; break;
5962 case '-': xkey = 'm'; break;
5966 * In all other modes, we try to retain the layout of
5967 * the DEC keypad in application mode.
5971 /* This key covers the '-' and ',' keys on a VT220 */
5972 if (modifiers & PKM_SHIFT)
5973 xkey = 'm'; /* VT220 '-' */
5975 xkey = 'l'; /* VT220 ',' */
5977 case PK_KPMINUS: xkey = 'm'; break;
5978 case PK_KPCOMMA: xkey = 'l'; break;
5979 default: break; /* else gcc warns `enum value not used' */
5984 if (term->vt52_mode) {
5985 if (xkey >= 'P' && xkey <= 'S')
5986 p += sprintf((char *) p, "\x1B%c", xkey);
5988 p += sprintf((char *) p, "\x1B?%c", xkey);
5990 p += sprintf((char *) p, "\x1BO%c", xkey);
5993 /* Not in application mode -- treat the number pad as arrow keys? */
5994 if ((flags & PKF_NUMLOCK) == 0) {
5996 case PK_KP0: keysym = PK_INSERT; break;
5997 case PK_KP1: keysym = PK_END; break;
5998 case PK_KP2: keysym = PK_DOWN; break;
5999 case PK_KP3: keysym = PK_PAGEDOWN; break;
6000 case PK_KP4: keysym = PK_LEFT; break;
6001 case PK_KP5: keysym = PK_REST; break;
6002 case PK_KP6: keysym = PK_RIGHT; break;
6003 case PK_KP7: keysym = PK_HOME; break;
6004 case PK_KP8: keysym = PK_UP; break;
6005 case PK_KP9: keysym = PK_PAGEUP; break;
6006 default: break; /* else gcc warns `enum value not used' */
6011 /* Miscellaneous keys */
6018 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
6019 else if (modifiers == PKM_SHIFT)
6020 /* We do the opposite of what is configured */
6021 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
6027 else if (modifiers == PKM_SHIFT)
6028 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
6031 /* XXX window.c has ctrl+shift+space sending 0xa0 */
6033 if (modifiers == PKM_CONTROL)
6038 case PK_KPENTER: /* Odd keypad modes handled above */
6039 if (modifiers == 0) {
6041 if (term->cr_lf_return)
6045 default: break; /* else gcc warns `enum value not used' */
6048 /* SCO function keys and editing keys */
6049 if (term->cfg.funky_type == FUNKY_SCO) {
6050 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
6051 static char const codes[] =
6052 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
6053 int index = keysym - PK_F1;
6055 if (modifiers & PKM_SHIFT) index += 12;
6056 if (modifiers & PKM_CONTROL) index += 24;
6057 p += sprintf((char *) p, "\x1B[%c", codes[index]);
6060 if (PK_ISEDITING(keysym)) {
6064 case PK_DELETE: *p++ = 0x7f; goto done;
6065 case PK_HOME: xkey = 'H'; break;
6066 case PK_INSERT: xkey = 'L'; break;
6067 case PK_END: xkey = 'F'; break;
6068 case PK_PAGEUP: xkey = 'I'; break;
6069 case PK_PAGEDOWN: xkey = 'G'; break;
6070 default: break; /* else gcc warns `enum value not used' */
6072 p += sprintf((char *) p, "\x1B[%c", xkey);
6076 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
6079 if (term->cfg.funky_type == FUNKY_XTERM) {
6080 /* Xterm shuffles these keys, apparently. */
6082 case PK_HOME: keysym = PK_INSERT; break;
6083 case PK_INSERT: keysym = PK_HOME; break;
6084 case PK_DELETE: keysym = PK_END; break;
6085 case PK_END: keysym = PK_PAGEUP; break;
6086 case PK_PAGEUP: keysym = PK_DELETE; break;
6087 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
6088 default: break; /* else gcc warns `enum value not used' */
6093 if (term->cfg.rxvt_homeend &&
6094 (keysym == PK_HOME || keysym == PK_END)) {
6095 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
6099 if (term->vt52_mode) {
6103 * A real VT52 doesn't have these, and a VT220 doesn't
6104 * send anything for them in VT52 mode.
6107 case PK_HOME: xkey = 'H'; break;
6108 case PK_INSERT: xkey = 'L'; break;
6109 case PK_DELETE: xkey = 'M'; break;
6110 case PK_END: xkey = 'E'; break;
6111 case PK_PAGEUP: xkey = 'I'; break;
6112 case PK_PAGEDOWN: xkey = 'G'; break;
6113 default: xkey=0; break; /* else gcc warns `enum value not used'*/
6115 p += sprintf((char *) p, "\x1B%c", xkey);
6120 case PK_HOME: code = 1; break;
6121 case PK_INSERT: code = 2; break;
6122 case PK_DELETE: code = 3; break;
6123 case PK_END: code = 4; break;
6124 case PK_PAGEUP: code = 5; break;
6125 case PK_PAGEDOWN: code = 6; break;
6126 default: code = 0; break; /* else gcc warns `enum value not used' */
6128 p += sprintf((char *) p, "\x1B[%d~", code);
6132 if (PK_ISFKEY(keysym)) {
6133 /* Map Shift+F1-F10 to F11-F20 */
6134 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
6136 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
6138 /* XXX This overrides the XTERM/VT52 mode below */
6140 if (keysym >= PK_F6) offt++;
6141 if (keysym >= PK_F12) offt++;
6142 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
6143 'P' + keysym - PK_F1 - offt);
6146 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
6147 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
6150 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
6151 if (term->vt52_mode)
6152 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
6154 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
6157 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
6161 if (PK_ISCURSOR(keysym)) {
6165 case PK_UP: xkey = 'A'; break;
6166 case PK_DOWN: xkey = 'B'; break;
6167 case PK_RIGHT: xkey = 'C'; break;
6168 case PK_LEFT: xkey = 'D'; break;
6169 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
6170 default: xkey = 0; break; /* else gcc warns `enum value not used' */
6172 if (term->vt52_mode)
6173 p += sprintf((char *) p, "\x1B%c", xkey);
6175 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
6177 /* Useful mapping of Ctrl-arrows */
6178 if (modifiers == PKM_CONTROL)
6182 p += sprintf((char *) p, "\x1BO%c", xkey);
6184 p += sprintf((char *) p, "\x1B[%c", xkey);
6190 if (p > output || tlen > 0) {
6192 * Interrupt an ongoing paste. I'm not sure
6193 * this is sensible, but for the moment it's
6194 * preferable to having to faff about buffering
6200 * We need not bother about stdin backlogs
6201 * here, because in GUI PuTTY we can't do
6202 * anything about it anyway; there's no means
6203 * of asking Windows to hold off on KEYDOWN
6204 * messages. We _have_ to buffer everything
6207 term_seen_key_event(term);
6211 fprintf(stderr, "sending ESC\n");
6213 ldisc_send(term->ldisc, "\x1b", 1, 1);
6218 fprintf(stderr, "sending %d bytes:", p - output);
6219 for (i = 0; i < p - output; i++)
6220 fprintf(stderr, " %02x", output[i]);
6221 fprintf(stderr, "\n");
6223 ldisc_send(term->ldisc, output, p - output, 1);
6224 } else if (tlen > 0) {
6226 fprintf(stderr, "sending %d unichars:", tlen);
6227 for (i = 0; i < tlen; i++)
6228 fprintf(stderr, " %04x", (unsigned) text[i]);
6229 fprintf(stderr, "\n");
6231 luni_send(term->ldisc, text, tlen, 1);
6236 void term_nopaste(Terminal *term)
6238 if (term->paste_len == 0)
6240 sfree(term->paste_buffer);
6241 term->paste_buffer = NULL;
6242 term->paste_len = 0;
6245 int term_paste_pending(Terminal *term)
6247 return term->paste_len != 0;
6250 void term_paste(Terminal *term)
6252 long now, paste_diff;
6254 if (term->paste_len == 0)
6257 /* Don't wait forever to paste */
6258 if (term->paste_hold) {
6259 now = GETTICKCOUNT();
6260 paste_diff = now - term->last_paste;
6261 if (paste_diff >= 0 && paste_diff < 450)
6264 term->paste_hold = 0;
6266 while (term->paste_pos < term->paste_len) {
6268 while (n + term->paste_pos < term->paste_len) {
6269 if (term->paste_buffer[term->paste_pos + n++] == '\015')
6273 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
6274 term->paste_pos += n;
6276 if (term->paste_pos < term->paste_len) {
6277 term->paste_hold = 1;
6281 sfree(term->paste_buffer);
6282 term->paste_buffer = NULL;
6283 term->paste_len = 0;
6286 static void deselect(Terminal *term)
6288 term->selstate = NO_SELECTION;
6289 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
6292 void term_deselect(Terminal *term)
6298 int term_ldisc(Terminal *term, int option)
6300 if (option == LD_ECHO)
6301 return term->term_echoing;
6302 if (option == LD_EDIT)
6303 return term->term_editing;
6307 int term_data(Terminal *term, int is_stderr, const char *data, int len)
6309 bufchain_add(&term->inbuf, data, len);
6311 if (!term->in_term_out) {
6312 term->in_term_out = TRUE;
6313 term_reset_cblink(term);
6315 * During drag-selects, we do not process terminal input,
6316 * because the user will want the screen to hold still to
6319 if (term->selstate != DRAGGING)
6321 term->in_term_out = FALSE;
6325 * term_out() always completely empties inbuf. Therefore,
6326 * there's no reason at all to return anything other than zero
6327 * from this function, because there _can't_ be a question of
6328 * the remote side needing to wait until term_out() has cleared
6331 * This is a slightly suboptimal way to deal with SSH-2 - in
6332 * principle, the window mechanism would allow us to continue
6333 * to accept data on forwarded ports and X connections even
6334 * while the terminal processing was going slowly - but we
6335 * can't do the 100% right thing without moving the terminal
6336 * processing into a separate thread, and that might hurt
6337 * portability. So we manage stdout buffering the old SSH-1 way:
6338 * if the terminal processing goes slowly, the whole SSH
6339 * connection stops accepting data until it's ready.
6341 * In practice, I can't imagine this causing serious trouble.
6347 * Write untrusted data to the terminal.
6348 * The only control character that should be honoured is \n (which
6349 * will behave as a CRLF).
6351 int term_data_untrusted(Terminal *term, const char *data, int len)
6354 /* FIXME: more sophisticated checking? */
6355 for (i = 0; i < len; i++) {
6356 if (data[i] == '\n')
6357 term_data(term, 1, "\r\n", 2);
6358 else if (data[i] & 0x60)
6359 term_data(term, 1, data + i, 1);
6361 return 0; /* assumes that term_data() always returns 0 */
6364 void term_provide_logctx(Terminal *term, void *logctx)
6366 term->logctx = logctx;
6369 void term_set_focus(Terminal *term, int has_focus)
6371 term->has_focus = has_focus;
6372 term_schedule_cblink(term);
6376 * Provide "auto" settings for remote tty modes, suitable for an
6377 * application with a terminal window.
6379 char *term_get_ttymode(Terminal *term, const char *mode)
6382 if (strcmp(mode, "ERASE") == 0) {
6383 val = term->cfg.bksp_is_delete ? "^?" : "^H";
6385 /* FIXME: perhaps we should set ONLCR based on cfg.lfhascr as well? */
6389 struct term_userpass_state {
6391 int done_prompt; /* printed out prompt yet? */
6392 size_t pos; /* cursor position */
6396 * Process some terminal data in the course of username/password
6399 int term_get_userpass_input(Terminal *term, prompts_t *p,
6400 unsigned char *in, int inlen)
6402 struct term_userpass_state *s = (struct term_userpass_state *)p->data;
6405 * First call. Set some stuff up.
6407 p->data = s = snew(struct term_userpass_state);
6410 /* We only print the `name' caption if we have to... */
6411 if (p->name_reqd && p->name) {
6412 size_t l = strlen(p->name);
6413 term_data_untrusted(term, p->name, l);
6414 if (p->name[l-1] != '\n')
6415 term_data_untrusted(term, "\n", 1);
6417 /* ...but we always print any `instruction'. */
6418 if (p->instruction) {
6419 size_t l = strlen(p->instruction);
6420 term_data_untrusted(term, p->instruction, l);
6421 if (p->instruction[l-1] != '\n')
6422 term_data_untrusted(term, "\n", 1);
6425 * Zero all the results, in case we abort half-way through.
6429 for (i = 0; i < p->n_prompts; i++)
6430 memset(p->prompts[i]->result, 0, p->prompts[i]->result_len);
6434 while (s->curr_prompt < p->n_prompts) {
6436 prompt_t *pr = p->prompts[s->curr_prompt];
6437 int finished_prompt = 0;
6439 if (!s->done_prompt) {
6440 term_data_untrusted(term, pr->prompt, strlen(pr->prompt));
6445 /* Breaking out here ensures that the prompt is printed even
6446 * if we're now waiting for user data. */
6447 if (!in || !inlen) break;
6449 /* FIXME: should we be using local-line-editing code instead? */
6450 while (!finished_prompt && inlen) {
6456 term_data(term, 0, "\r\n", 2);
6457 pr->result[s->pos] = '\0';
6458 pr->result[pr->result_len - 1] = '\0';
6459 /* go to next prompt, if any */
6462 finished_prompt = 1; /* break out */
6468 term_data(term, 0, "\b \b", 3);
6474 while (s->pos > 0) {
6476 term_data(term, 0, "\b \b", 3);
6482 /* Immediate abort. */
6483 term_data(term, 0, "\r\n", 2);
6486 return 0; /* user abort */
6489 * This simplistic check for printability is disabled
6490 * when we're doing password input, because some people
6491 * have control characters in their passwords.
6494 (c >= ' ' && c <= '~') ||
6495 ((unsigned char) c >= 160))
6496 && s->pos < pr->result_len - 1) {
6497 pr->result[s->pos++] = c;
6499 term_data(term, 0, &c, 1);
6507 if (s->curr_prompt < p->n_prompts) {
6508 return -1; /* more data required */
6512 return +1; /* all done */