10 #define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
11 #define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
12 #define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
13 #define posdiff(p1,p2) ( ((p1).y - (p2).y) * (term->cols+1) + (p1).x - (p2).x )
15 /* Product-order comparisons for rectangular block selection. */
16 #define posPlt(p1,p2) ( (p1).y <= (p2).y && (p1).x < (p2).x )
17 #define posPle(p1,p2) ( (p1).y <= (p2).y && (p1).x <= (p2).x )
19 #define incpos(p) ( (p).x == term->cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
20 #define decpos(p) ( (p).x == 0 ? ((p).x = term->cols, (p).y--, 1) : ((p).x--, 0) )
24 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
25 #define CL_VT100 0x0002 /* VT100 */
26 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
27 #define CL_VT102 0x0008 /* VT102 */
28 #define CL_VT220 0x0010 /* VT220 */
29 #define CL_VT320 0x0020 /* VT320 */
30 #define CL_VT420 0x0040 /* VT420 */
31 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
32 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
33 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
34 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
35 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
37 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
38 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
39 #define TM_VT102 (TM_VT100AVO|CL_VT102)
40 #define TM_VT220 (TM_VT102|CL_VT220)
41 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
42 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
44 #define TM_PUTTY (0xFFFF)
46 #define compatibility(x) \
47 if ( ((CL_##x)&term->compatibility_level) == 0 ) { \
48 term->termstate=TOPLEVEL; \
51 #define compatibility2(x,y) \
52 if ( ((CL_##x|CL_##y)&term->compatibility_level) == 0 ) { \
53 term->termstate=TOPLEVEL; \
57 #define has_compat(x) ( ((CL_##x)&term->compatibility_level) != 0 )
59 const char sco2ansicolour[] = { 0, 4, 2, 6, 1, 5, 3, 7 };
61 #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
62 const wchar_t sel_nl[] = SEL_NL;
65 * Fetch the character at a particular position in a line array,
66 * for purposes of `wordtype'. The reason this isn't just a simple
67 * array reference is that if the character we find is UCSWIDE,
68 * then we must look one space further to the left.
70 #define UCSGET(a, x) \
71 ( (x)>0 && ((a)[(x)] & (CHAR_MASK | CSET_MASK)) == UCSWIDE ? \
72 (a)[(x)-1] : (a)[(x)] )
75 * Internal prototypes.
77 static unsigned long *resizeline(unsigned long *, int);
78 static unsigned long *lineptr(Terminal *, int, int);
79 static void do_paint(Terminal *, Context, int);
80 static void erase_lots(Terminal *, int, int, int);
81 static void swap_screen(Terminal *, int, int, int);
82 static void update_sbar(Terminal *);
83 static void deselect(Terminal *);
84 static void term_print_finish(Terminal *);
85 #ifdef OPTIMISE_SCROLL
86 static void scroll_display(Terminal *, int, int, int);
87 #endif /* OPTIMISE_SCROLL */
90 * Resize a line to make it `cols' columns wide.
92 static unsigned long *resizeline(unsigned long *line, int cols)
95 unsigned long lineattrs;
97 if (line[0] != (unsigned long)cols) {
99 * This line is the wrong length, which probably means it
100 * hasn't been accessed since a resize. Resize it now.
103 lineattrs = line[oldlen + 1];
104 line = sresize(line, 2 + cols, TTYPE);
106 for (i = oldlen; i < cols; i++)
107 line[i + 1] = ERASE_CHAR;
108 line[cols + 1] = lineattrs & LATTR_MODE;
115 * Get the number of lines in the scrollback.
117 static int sblines(Terminal *term)
119 int sblines = count234(term->scrollback);
120 if (term->cfg.erase_to_scrollback &&
121 term->alt_which && term->alt_screen) {
122 sblines += term->alt_sblines;
128 * Retrieve a line of the screen or of the scrollback, according to
129 * whether the y coordinate is non-negative or negative
132 static unsigned long *lineptr(Terminal *term, int y, int lineno)
134 unsigned long *line, *newline;
139 whichtree = term->screen;
143 if (term->cfg.erase_to_scrollback &&
144 term->alt_which && term->alt_screen) {
145 altlines = term->alt_sblines;
148 whichtree = term->scrollback;
149 treeindex = y + altlines + count234(term->scrollback);
151 whichtree = term->alt_screen;
152 treeindex = y + term->alt_sblines;
153 /* treeindex = y + count234(term->alt_screen); */
156 line = index234(whichtree, treeindex);
158 /* We assume that we don't screw up and retrieve something out of range. */
159 assert(line != NULL);
161 newline = resizeline(line, term->cols);
162 if (newline != line) {
163 delpos234(whichtree, treeindex);
164 addpos234(whichtree, newline, treeindex);
171 #define lineptr(x) lineptr(term,x,__LINE__)
174 * Set up power-on settings for the terminal.
176 static void power_on(Terminal *term)
178 term->curs.x = term->curs.y = 0;
179 term->alt_x = term->alt_y = 0;
180 term->savecurs.x = term->savecurs.y = 0;
181 term->alt_t = term->marg_t = 0;
182 if (term->rows != -1)
183 term->alt_b = term->marg_b = term->rows - 1;
185 term->alt_b = term->marg_b = 0;
186 if (term->cols != -1) {
188 for (i = 0; i < term->cols; i++)
189 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
191 term->alt_om = term->dec_om = term->cfg.dec_om;
192 term->alt_ins = term->insert = FALSE;
193 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
194 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
195 term->alt_cset = term->cset = term->save_cset = 0;
196 term->alt_utf = term->utf = term->save_utf = 0;
198 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
199 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = ATTR_ASCII;
201 term->in_vbell = FALSE;
203 term->big_cursor = 0;
204 term->default_attr = term->save_attr = term->curr_attr = ATTR_DEFAULT;
205 term->term_editing = term->term_echoing = FALSE;
206 term->app_cursor_keys = term->cfg.app_cursor;
207 term->app_keypad_keys = term->cfg.app_keypad;
208 term->use_bce = term->cfg.bce;
209 term->blink_is_real = term->cfg.blinktext;
210 term->erase_char = ERASE_CHAR;
212 term_print_finish(term);
215 for (i = 0; i < 256; i++)
216 term->wordness[i] = term->cfg.wordness[i];
219 swap_screen(term, 1, FALSE, FALSE);
220 erase_lots(term, FALSE, TRUE, TRUE);
221 swap_screen(term, 0, FALSE, FALSE);
222 erase_lots(term, FALSE, TRUE, TRUE);
227 * Force a screen update.
229 void term_update(Terminal *term)
232 ctx = get_ctx(term->frontend);
234 int need_sbar_update = term->seen_disp_event;
235 if (term->seen_disp_event && term->cfg.scroll_on_disp) {
236 term->disptop = 0; /* return to main screen */
237 term->seen_disp_event = 0;
238 need_sbar_update = TRUE;
241 /* Allocate temporary buffers for Arabic shaping and bidi. */
242 if (!term->cfg.arabicshaping || !term->cfg.bidi)
244 term->wcFrom = sresize(term->wcFrom, term->cols, bidi_char);
245 term->ltemp = sresize(term->ltemp, term->cols+1, unsigned long);
246 term->wcTo = sresize(term->wcTo, term->cols, bidi_char);
249 if (need_sbar_update)
251 do_paint(term, ctx, TRUE);
252 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
258 * Called from front end when a keypress occurs, to trigger
259 * anything magical that needs to happen in that situation.
261 void term_seen_key_event(Terminal *term)
264 * On any keypress, clear the bell overload mechanism
265 * completely, on the grounds that large numbers of
266 * beeps coming from deliberate key action are likely
267 * to be intended (e.g. beeps from filename completion
268 * blocking repeatedly).
270 term->beep_overloaded = FALSE;
271 while (term->beephead) {
272 struct beeptime *tmp = term->beephead;
273 term->beephead = tmp->next;
276 term->beeptail = NULL;
280 * Reset the scrollback on keypress, if we're doing that.
282 if (term->cfg.scroll_on_key) {
283 term->disptop = 0; /* return to main screen */
284 term->seen_disp_event = 1;
289 * Same as power_on(), but an external function.
291 void term_pwron(Terminal *term)
294 if (term->ldisc) /* cause ldisc to notice changes */
295 ldisc_send(term->ldisc, NULL, 0, 0);
303 * When the user reconfigures us, we need to check the forbidden-
304 * alternate-screen config option, disable raw mouse mode if the
305 * user has disabled mouse reporting, and abandon a print job if
306 * the user has disabled printing.
308 void term_reconfig(Terminal *term, Config *cfg)
311 * Before adopting the new config, check all those terminal
312 * settings which control power-on defaults; and if they've
313 * changed, we will modify the current state as well as the
314 * default one. The full list is: Auto wrap mode, DEC Origin
315 * Mode, BCE, blinking text, character classes.
317 int reset_wrap, reset_decom, reset_bce, reset_blink, reset_charclass;
320 reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode);
321 reset_decom = (term->cfg.dec_om != cfg->dec_om);
322 reset_bce = (term->cfg.bce != cfg->bce);
323 reset_blink = (term->cfg.blinktext != cfg->blinktext);
325 for (i = 0; i < lenof(term->cfg.wordness); i++)
326 if (term->cfg.wordness[i] != cfg->wordness[i])
329 term->cfg = *cfg; /* STRUCTURE COPY */
332 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
334 term->alt_om = term->dec_om = term->cfg.dec_om;
336 term->use_bce = term->cfg.bce;
338 term->erase_char = (' ' | ATTR_ASCII |
340 (ATTR_FGMASK | ATTR_BGMASK)));
342 term->erase_char = ERASE_CHAR;
345 term->blink_is_real = term->cfg.blinktext;
347 for (i = 0; i < 256; i++)
348 term->wordness[i] = term->cfg.wordness[i];
350 if (term->cfg.no_alt_screen)
351 swap_screen(term, 0, FALSE, FALSE);
352 if (term->cfg.no_mouse_rep) {
353 term->xterm_mouse = 0;
354 set_raw_mouse_mode(term->frontend, 0);
356 if (term->cfg.no_remote_charset) {
357 term->cset_attr[0] = term->cset_attr[1] = ATTR_ASCII;
358 term->sco_acs = term->alt_sco_acs = 0;
361 if (!*term->cfg.printer) {
362 term_print_finish(term);
367 * Clear the scrollback.
369 void term_clrsb(Terminal *term)
373 while ((line = delpos234(term->scrollback, 0)) != NULL) {
376 term->tempsblines = 0;
377 term->alt_sblines = 0;
382 * Initialise the terminal.
384 Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
390 * Allocate a new Terminal structure and initialise the fields
393 term = snew(Terminal);
394 term->frontend = frontend;
395 term->ucsdata = ucsdata;
396 term->cfg = *mycfg; /* STRUCTURE COPY */
398 term->compatibility_level = TM_PUTTY;
399 strcpy(term->id_string, "\033[?6c");
400 term->last_blink = term->last_tblink = 0;
401 term->paste_buffer = NULL;
403 term->last_paste = 0;
404 bufchain_init(&term->inbuf);
405 bufchain_init(&term->printer_buf);
406 term->printing = term->only_printing = FALSE;
407 term->print_job = NULL;
408 term->vt52_mode = FALSE;
409 term->cr_lf_return = FALSE;
410 term->seen_disp_event = FALSE;
411 term->xterm_mouse = term->mouse_is_down = FALSE;
412 term->reset_132 = FALSE;
413 term->blinker = term->tblinker = 0;
415 term->repeat_off = FALSE;
416 term->termstate = TOPLEVEL;
417 term->selstate = NO_SELECTION;
420 term->screen = term->alt_screen = term->scrollback = NULL;
421 term->tempsblines = 0;
422 term->alt_sblines = 0;
424 term->disptext = term->dispcurs = NULL;
427 term->rows = term->cols = -1;
429 term->beephead = term->beeptail = NULL;
430 #ifdef OPTIMISE_SCROLL
431 term->scrollhead = term->scrolltail = NULL;
432 #endif /* OPTIMISE_SCROLL */
434 term->lastbeep = FALSE;
435 term->beep_overloaded = FALSE;
436 term->attr_mask = 0xffffffff;
437 term->resize_fn = NULL;
438 term->resize_ctx = NULL;
439 term->in_term_out = FALSE;
444 term->bidi_cache_size = 0;
445 term->pre_bidi_cache = term->post_bidi_cache = NULL;
450 void term_free(Terminal *term)
453 struct beeptime *beep;
456 while ((line = delpos234(term->scrollback, 0)) != NULL)
458 freetree234(term->scrollback);
459 while ((line = delpos234(term->screen, 0)) != NULL)
461 freetree234(term->screen);
462 while ((line = delpos234(term->alt_screen, 0)) != NULL)
464 freetree234(term->alt_screen);
465 sfree(term->disptext);
466 while (term->beephead) {
467 beep = term->beephead;
468 term->beephead = beep->next;
471 bufchain_clear(&term->inbuf);
473 printer_finish_job(term->print_job);
474 bufchain_clear(&term->printer_buf);
475 sfree(term->paste_buffer);
480 for (i = 0; i < term->bidi_cache_size; i++) {
481 sfree(term->pre_bidi_cache[i]);
482 sfree(term->post_bidi_cache[i]);
484 sfree(term->pre_bidi_cache);
485 sfree(term->post_bidi_cache);
491 * Set up the terminal for a given size.
493 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
496 unsigned long *newdisp, *line;
499 int save_alt_which = term->alt_which;
501 if (newrows == term->rows && newcols == term->cols &&
502 newsavelines == term->savelines)
503 return; /* nothing to do */
506 swap_screen(term, 0, FALSE, FALSE);
508 term->alt_t = term->marg_t = 0;
509 term->alt_b = term->marg_b = newrows - 1;
511 if (term->rows == -1) {
512 term->scrollback = newtree234(NULL);
513 term->screen = newtree234(NULL);
514 term->tempsblines = 0;
519 * Resize the screen and scrollback. We only need to shift
520 * lines around within our data structures, because lineptr()
521 * will take care of resizing each individual line if
524 * - If the new screen is longer, we shunt lines in from temporary
525 * scrollback if possible, otherwise we add new blank lines at
528 * - If the new screen is shorter, we remove any blank lines at
529 * the bottom if possible, otherwise shunt lines above the cursor
530 * to scrollback if possible, otherwise delete lines below the
533 * - Then, if the new scrollback length is less than the
534 * amount of scrollback we actually have, we must throw some
537 sblen = count234(term->scrollback);
538 /* Do this loop to expand the screen if newrows > rows */
539 assert(term->rows == count234(term->screen));
540 while (term->rows < newrows) {
541 if (term->tempsblines > 0) {
542 /* Insert a line from the scrollback at the top of the screen. */
543 assert(sblen >= term->tempsblines);
544 line = delpos234(term->scrollback, --sblen);
545 term->tempsblines -= 1;
546 addpos234(term->screen, line, 0);
548 term->savecurs.y += 1;
550 /* Add a new blank line at the bottom of the screen. */
551 line = snewn(newcols + 2, TTYPE);
553 for (j = 0; j < newcols; j++)
554 line[j + 1] = ERASE_CHAR;
555 line[newcols + 1] = LATTR_NORM;
556 addpos234(term->screen, line, count234(term->screen));
560 /* Do this loop to shrink the screen if newrows < rows */
561 while (term->rows > newrows) {
562 if (term->curs.y < term->rows - 1) {
563 /* delete bottom row, unless it contains the cursor */
564 sfree(delpos234(term->screen, term->rows - 1));
566 /* push top row to scrollback */
567 line = delpos234(term->screen, 0);
568 addpos234(term->scrollback, line, sblen++);
569 term->tempsblines += 1;
571 term->savecurs.y -= 1;
575 assert(term->rows == newrows);
576 assert(count234(term->screen) == newrows);
578 /* Delete any excess lines from the scrollback. */
579 while (sblen > newsavelines) {
580 line = delpos234(term->scrollback, 0);
584 if (sblen < term->tempsblines)
585 term->tempsblines = sblen;
586 assert(count234(term->scrollback) <= newsavelines);
587 assert(count234(term->scrollback) >= term->tempsblines);
590 /* Make a new displayed text buffer. */
591 newdisp = snewn(newrows * (newcols + 1), TTYPE);
592 for (i = 0; i < newrows * (newcols + 1); i++)
593 newdisp[i] = ATTR_INVALID;
594 sfree(term->disptext);
595 term->disptext = newdisp;
596 term->dispcurs = NULL;
598 /* Make a new alternate screen. */
599 newalt = newtree234(NULL);
600 for (i = 0; i < newrows; i++) {
601 line = snewn(newcols + 2, TTYPE);
603 for (j = 0; j < newcols; j++)
604 line[j + 1] = term->erase_char;
605 line[newcols + 1] = LATTR_NORM;
606 addpos234(newalt, line, i);
608 if (term->alt_screen) {
609 while (NULL != (line = delpos234(term->alt_screen, 0)))
611 freetree234(term->alt_screen);
613 term->alt_screen = newalt;
614 term->alt_sblines = 0;
616 term->tabs = sresize(term->tabs, newcols, unsigned char);
619 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
620 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
623 /* Check that the cursor positions are still valid. */
624 if (term->savecurs.y < 0)
625 term->savecurs.y = 0;
626 if (term->savecurs.y >= newrows)
627 term->savecurs.y = newrows - 1;
628 if (term->curs.y < 0)
630 if (term->curs.y >= newrows)
631 term->curs.y = newrows - 1;
632 if (term->curs.x >= newcols)
633 term->curs.x = newcols - 1;
634 term->alt_x = term->alt_y = 0;
635 term->wrapnext = term->alt_wnext = FALSE;
637 term->rows = newrows;
638 term->cols = newcols;
639 term->savelines = newsavelines;
642 swap_screen(term, save_alt_which, FALSE, FALSE);
647 term->resize_fn(term->resize_ctx, term->cols, term->rows);
651 * Hand a function and context pointer to the terminal which it can
652 * use to notify a back end of resizes.
654 void term_provide_resize_fn(Terminal *term,
655 void (*resize_fn)(void *, int, int),
658 term->resize_fn = resize_fn;
659 term->resize_ctx = resize_ctx;
660 if (term->cols > 0 && term->rows > 0)
661 resize_fn(resize_ctx, term->cols, term->rows);
664 /* Find the bottom line on the screen that has any content.
665 * If only the top line has content, returns 0.
666 * If no lines have content, return -1.
668 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
671 for (i = count234(screen) - 1; i >= 0; i--) {
672 unsigned long *line = index234(screen, i);
675 for (j = 0; j < cols; j++) {
676 if (line[j + 1] != term->erase_char) break;
678 if (j != cols) break;
684 * Swap screens. If `reset' is TRUE and we have been asked to
685 * switch to the alternate screen, we must bring most of its
686 * configuration from the main screen and erase the contents of the
687 * alternate screen completely. (This is even true if we're already
688 * on it! Blame xterm.)
690 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
696 reset = FALSE; /* do no weird resetting if which==0 */
698 if (which != term->alt_which) {
699 term->alt_which = which;
701 ttr = term->alt_screen;
702 term->alt_screen = term->screen;
704 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
706 if (!reset && !keep_cur_pos)
707 term->curs.x = term->alt_x;
710 if (!reset && !keep_cur_pos)
711 term->curs.y = term->alt_y;
714 if (!reset) term->marg_t = term->alt_t;
717 if (!reset) term->marg_b = term->alt_b;
720 if (!reset) term->dec_om = term->alt_om;
723 if (!reset) term->wrap = term->alt_wrap;
726 if (!reset) term->wrapnext = term->alt_wnext;
729 if (!reset) term->insert = term->alt_ins;
732 if (!reset) term->cset = term->alt_cset;
735 if (!reset) term->utf = term->alt_utf;
738 if (!reset) term->sco_acs = term->alt_sco_acs;
739 term->alt_sco_acs = t;
742 if (reset && term->screen) {
744 * Yes, this _is_ supposed to honour background-colour-erase.
746 erase_lots(term, FALSE, TRUE, TRUE);
750 * This might not be possible if we're called during
758 * Update the scroll bar.
760 static void update_sbar(Terminal *term)
762 int nscroll = sblines(term);
763 set_sbar(term->frontend, nscroll + term->rows,
764 nscroll + term->disptop, term->rows);
768 * Check whether the region bounded by the two pointers intersects
769 * the scroll region, and de-select the on-screen selection if so.
771 static void check_selection(Terminal *term, pos from, pos to)
773 if (poslt(from, term->selend) && poslt(term->selstart, to))
778 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
779 * for backward.) `sb' is TRUE if the scrolling is permitted to
780 * affect the scrollback buffer.
782 * NB this function invalidates all pointers into lines of the
783 * screen data structures. In particular, you MUST call fix_cpos
784 * after calling scroll() and before doing anything else that
785 * uses the cpos shortcut pointer.
787 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
789 unsigned long *line, *line2;
790 int i, seltop, olddisptop, shift;
792 if (topline != 0 || term->alt_which != 0)
795 olddisptop = term->disptop;
799 line = delpos234(term->screen, botline);
800 line = resizeline(line, term->cols);
801 for (i = 0; i < term->cols; i++)
802 line[i + 1] = term->erase_char;
803 line[term->cols + 1] = 0;
804 addpos234(term->screen, line, topline);
806 if (term->selstart.y >= topline && term->selstart.y <= botline) {
808 if (term->selstart.y > botline) {
809 term->selstart.y = botline + 1;
810 term->selstart.x = 0;
813 if (term->selend.y >= topline && term->selend.y <= botline) {
815 if (term->selend.y > botline) {
816 term->selend.y = botline + 1;
825 line = delpos234(term->screen, topline);
826 if (sb && term->savelines > 0) {
827 int sblen = count234(term->scrollback);
829 * We must add this line to the scrollback. We'll
830 * remove a line from the top of the scrollback to
831 * replace it, or allocate a new one if the
832 * scrollback isn't full.
834 if (sblen == term->savelines) {
835 sblen--, line2 = delpos234(term->scrollback, 0);
837 line2 = snewn(term->cols + 2, TTYPE);
838 line2[0] = term->cols;
839 term->tempsblines += 1;
841 addpos234(term->scrollback, line, sblen);
845 * If the user is currently looking at part of the
846 * scrollback, and they haven't enabled any options
847 * that are going to reset the scrollback as a
848 * result of this movement, then the chances are
849 * they'd like to keep looking at the same line. So
850 * we move their viewpoint at the same rate as the
851 * scroll, at least until their viewpoint hits the
852 * top end of the scrollback buffer, at which point
853 * we don't have the choice any more.
855 * Thanks to Jan Holmen Holsten for the idea and
856 * initial implementation.
858 if (term->disptop > -term->savelines && term->disptop < 0)
861 line = resizeline(line, term->cols);
862 for (i = 0; i < term->cols; i++)
863 line[i + 1] = term->erase_char;
864 line[term->cols + 1] = LATTR_NORM;
865 addpos234(term->screen, line, botline);
868 * If the selection endpoints move into the scrollback,
869 * we keep them moving until they hit the top. However,
870 * of course, if the line _hasn't_ moved into the
871 * scrollback then we don't do this, and cut them off
872 * at the top of the scroll region.
874 * This applies to selstart and selend (for an existing
875 * selection), and also selanchor (for one being
876 * selected as we speak).
878 seltop = sb ? -term->savelines : topline;
880 if (term->selstate != NO_SELECTION) {
881 if (term->selstart.y >= seltop &&
882 term->selstart.y <= botline) {
884 if (term->selstart.y < seltop) {
885 term->selstart.y = seltop;
886 term->selstart.x = 0;
889 if (term->selend.y >= seltop && term->selend.y <= botline) {
891 if (term->selend.y < seltop) {
892 term->selend.y = seltop;
896 if (term->selanchor.y >= seltop &&
897 term->selanchor.y <= botline) {
899 if (term->selanchor.y < seltop) {
900 term->selanchor.y = seltop;
901 term->selanchor.x = 0;
909 #ifdef OPTIMISE_SCROLL
910 shift += term->disptop - olddisptop;
911 if (shift < term->rows && shift > -term->rows && shift != 0)
912 scroll_display(term, topline, botline, shift);
913 #endif /* OPTIMISE_SCROLL */
916 #ifdef OPTIMISE_SCROLL
918 * Add a scroll of a region on the screen into the pending scroll list.
919 * `lines' is +ve for scrolling forward, -ve for backward.
921 * If the scroll is on the same area as the last scroll in the list,
924 static void save_scroll(Terminal *term, int topline, int botline, int lines)
926 struct scrollregion *newscroll;
927 if (term->scrolltail &&
928 term->scrolltail->topline == topline &&
929 term->scrolltail->botline == botline) {
930 term->scrolltail->lines += lines;
932 newscroll = snew(struct scrollregion);
933 newscroll->topline = topline;
934 newscroll->botline = botline;
935 newscroll->lines = lines;
936 newscroll->next = NULL;
938 if (!term->scrollhead)
939 term->scrollhead = newscroll;
941 term->scrolltail->next = newscroll;
942 term->scrolltail = newscroll;
947 * Scroll the physical display, and our conception of it in disptext.
949 static void scroll_display(Terminal *term, int topline, int botline, int lines)
951 unsigned long *start, *end;
952 int distance, size, i;
954 start = term->disptext + topline * (term->cols + 1);
955 end = term->disptext + (botline + 1) * (term->cols + 1);
956 distance = (lines > 0 ? lines : -lines) * (term->cols + 1);
957 size = end - start - distance;
959 memmove(start, start + distance, size * TSIZE);
960 if (term->dispcurs >= start + distance &&
961 term->dispcurs <= start + distance + size)
962 term->dispcurs -= distance;
963 for (i = 0; i < distance; i++)
964 (start + size)[i] |= ATTR_INVALID;
966 memmove(start + distance, start, size * TSIZE);
967 if (term->dispcurs >= start && term->dispcurs <= start + size)
968 term->dispcurs += distance;
969 for (i = 0; i < distance; i++)
970 start[i] |= ATTR_INVALID;
972 save_scroll(term, topline, botline, lines);
974 #endif /* OPTIMISE_SCROLL */
977 * Move the cursor to a given position, clipping at boundaries. We
978 * may or may not want to clip at the scroll margin: marg_clip is 0
979 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
980 * even _being_ outside the margins.
982 static void move(Terminal *term, int x, int y, int marg_clip)
989 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
992 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
1003 term->wrapnext = FALSE;
1007 * Save or restore the cursor and SGR mode.
1009 static void save_cursor(Terminal *term, int save)
1012 term->savecurs = term->curs;
1013 term->save_attr = term->curr_attr;
1014 term->save_cset = term->cset;
1015 term->save_utf = term->utf;
1016 term->save_wnext = term->wrapnext;
1017 term->save_csattr = term->cset_attr[term->cset];
1018 term->save_sco_acs = term->sco_acs;
1020 term->curs = term->savecurs;
1021 /* Make sure the window hasn't shrunk since the save */
1022 if (term->curs.x >= term->cols)
1023 term->curs.x = term->cols - 1;
1024 if (term->curs.y >= term->rows)
1025 term->curs.y = term->rows - 1;
1027 term->curr_attr = term->save_attr;
1028 term->cset = term->save_cset;
1029 term->utf = term->save_utf;
1030 term->wrapnext = term->save_wnext;
1032 * wrapnext might reset to False if the x position is no
1033 * longer at the rightmost edge.
1035 if (term->wrapnext && term->curs.x < term->cols-1)
1036 term->wrapnext = FALSE;
1037 term->cset_attr[term->cset] = term->save_csattr;
1038 term->sco_acs = term->save_sco_acs;
1041 term->erase_char = (' ' | ATTR_ASCII |
1043 (ATTR_FGMASK | ATTR_BGMASK)));
1048 * This function is called before doing _anything_ which affects
1049 * only part of a line of text. It is used to mark the boundary
1050 * between two character positions, and it indicates that some sort
1051 * of effect is going to happen on only one side of that boundary.
1053 * The effect of this function is to check whether a CJK
1054 * double-width character is straddling the boundary, and to remove
1055 * it and replace it with two spaces if so. (Of course, one or
1056 * other of those spaces is then likely to be replaced with
1057 * something else again, as a result of whatever happens next.)
1059 * Also, if the boundary is at the right-hand _edge_ of the screen,
1060 * it implies something deliberate is being done to the rightmost
1061 * column position; hence we must clear LATTR_WRAPPED2.
1063 * The input to the function is the coordinates of the _second_
1064 * character of the pair.
1066 static void check_boundary(Terminal *term, int x, int y)
1068 unsigned long *ldata;
1070 /* Validate input coordinates, just in case. */
1071 if (x == 0 || x > term->cols)
1075 if (x == term->cols) {
1076 ldata[x] &= ~LATTR_WRAPPED2;
1078 if ((ldata[x] & (CHAR_MASK | CSET_MASK)) == UCSWIDE) {
1079 ldata[x-1] = ldata[x] =
1080 (ldata[x-1] &~ (CHAR_MASK | CSET_MASK)) | ATTR_ASCII | ' ';
1086 * Erase a large portion of the screen: the whole screen, or the
1087 * whole line, or parts thereof.
1089 static void erase_lots(Terminal *term,
1090 int line_only, int from_begin, int to_end)
1094 int erasing_lines_from_top = 0;
1097 start.y = term->curs.y;
1099 end.y = term->curs.y + 1;
1101 erase_lattr = FALSE;
1116 if (!from_begin || !to_end)
1117 check_boundary(term, term->curs.x, term->curs.y);
1118 check_selection(term, start, end);
1120 /* Clear screen also forces a full window redraw, just in case. */
1121 if (start.y == 0 && start.x == 0 && end.y == term->rows)
1122 term_invalidate(term);
1124 /* Lines scrolled away shouldn't be brought back on if the terminal
1126 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
1127 erasing_lines_from_top = 1;
1129 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
1130 /* If it's a whole number of lines, starting at the top, and
1131 * we're fully erasing them, erase by scrolling and keep the
1132 * lines in the scrollback. */
1133 int scrolllines = end.y;
1134 if (end.y == term->rows) {
1135 /* Shrink until we find a non-empty row.*/
1136 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
1138 if (scrolllines > 0)
1139 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
1142 unsigned long *ldata = lineptr(start.y);
1143 while (poslt(start, end)) {
1144 if (start.x == term->cols) {
1146 ldata[start.x] &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
1148 ldata[start.x] = LATTR_NORM;
1150 ldata[start.x] = term->erase_char;
1152 if (incpos(start) && start.y < term->rows)
1153 ldata = lineptr(start.y);
1157 /* After an erase of lines from the top of the screen, we shouldn't
1158 * bring the lines back again if the terminal enlarges (since the user or
1159 * application has explictly thrown them away). */
1160 if (erasing_lines_from_top && !(term->alt_which))
1161 term->tempsblines = 0;
1165 * Insert or delete characters within the current line. n is +ve if
1166 * insertion is desired, and -ve for deletion.
1168 static void insch(Terminal *term, int n)
1170 int dir = (n < 0 ? -1 : +1);
1173 unsigned long *ldata;
1175 n = (n < 0 ? -n : n);
1176 if (n > term->cols - term->curs.x)
1177 n = term->cols - term->curs.x;
1178 m = term->cols - term->curs.x - n;
1179 cursplus.y = term->curs.y;
1180 cursplus.x = term->curs.x + n;
1181 check_selection(term, term->curs, cursplus);
1182 check_boundary(term, term->curs.x, term->curs.y);
1184 check_boundary(term, term->curs.x + n, term->curs.y);
1185 ldata = lineptr(term->curs.y);
1187 memmove(ldata + term->curs.x, ldata + term->curs.x + n, m * TSIZE);
1189 ldata[term->curs.x + m++] = term->erase_char;
1191 memmove(ldata + term->curs.x + n, ldata + term->curs.x, m * TSIZE);
1193 ldata[term->curs.x + n] = term->erase_char;
1198 * Toggle terminal mode `mode' to state `state'. (`query' indicates
1199 * whether the mode is a DEC private one or a normal one.)
1201 static void toggle_mode(Terminal *term, int mode, int query, int state)
1203 unsigned long ticks;
1207 case 1: /* DECCKM: application cursor keys */
1208 term->app_cursor_keys = state;
1210 case 2: /* DECANM: VT52 mode */
1211 term->vt52_mode = !state;
1212 if (term->vt52_mode) {
1213 term->blink_is_real = FALSE;
1214 term->vt52_bold = FALSE;
1216 term->blink_is_real = term->cfg.blinktext;
1219 case 3: /* DECCOLM: 80/132 columns */
1221 if (!term->cfg.no_remote_resize)
1222 request_resize(term->frontend, state ? 132 : 80, term->rows);
1223 term->reset_132 = state;
1224 term->alt_t = term->marg_t = 0;
1225 term->alt_b = term->marg_b = term->rows - 1;
1226 move(term, 0, 0, 0);
1227 erase_lots(term, FALSE, TRUE, TRUE);
1229 case 5: /* DECSCNM: reverse video */
1231 * Toggle reverse video. If we receive an OFF within the
1232 * visual bell timeout period after an ON, we trigger an
1233 * effective visual bell, so that ESC[?5hESC[?5l will
1234 * always be an actually _visible_ visual bell.
1236 ticks = GETTICKCOUNT();
1237 /* turn off a previous vbell to avoid inconsistencies */
1238 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
1239 term->in_vbell = FALSE;
1240 if (term->rvideo && !state && /* we're turning it off... */
1241 (ticks - term->rvbell_startpoint) < VBELL_TIMEOUT) {/*...soon*/
1242 /* If there's no vbell timeout already, or this one lasts
1243 * longer, replace vbell_timeout with ours. */
1244 if (!term->in_vbell ||
1245 (term->rvbell_startpoint - term->vbell_startpoint <
1247 term->vbell_startpoint = term->rvbell_startpoint;
1248 term->in_vbell = TRUE; /* may clear rvideo but set in_vbell */
1249 } else if (!term->rvideo && state) {
1250 /* This is an ON, so we notice the time and save it. */
1251 term->rvbell_startpoint = ticks;
1253 term->rvideo = state;
1254 term->seen_disp_event = TRUE;
1258 case 6: /* DECOM: DEC origin mode */
1259 term->dec_om = state;
1261 case 7: /* DECAWM: auto wrap */
1264 case 8: /* DECARM: auto key repeat */
1265 term->repeat_off = !state;
1267 case 10: /* DECEDM: set local edit mode */
1268 term->term_editing = state;
1269 if (term->ldisc) /* cause ldisc to notice changes */
1270 ldisc_send(term->ldisc, NULL, 0, 0);
1272 case 25: /* DECTCEM: enable/disable cursor */
1273 compatibility2(OTHER, VT220);
1274 term->cursor_on = state;
1275 term->seen_disp_event = TRUE;
1277 case 47: /* alternate screen */
1278 compatibility(OTHER);
1280 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
1283 case 1000: /* xterm mouse 1 */
1284 term->xterm_mouse = state ? 1 : 0;
1285 set_raw_mouse_mode(term->frontend, state);
1287 case 1002: /* xterm mouse 2 */
1288 term->xterm_mouse = state ? 2 : 0;
1289 set_raw_mouse_mode(term->frontend, state);
1291 case 1047: /* alternate screen */
1292 compatibility(OTHER);
1294 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
1297 case 1048: /* save/restore cursor */
1298 if (!term->cfg.no_alt_screen)
1299 save_cursor(term, state);
1300 if (!state) term->seen_disp_event = TRUE;
1302 case 1049: /* cursor & alternate screen */
1303 if (state && !term->cfg.no_alt_screen)
1304 save_cursor(term, state);
1305 if (!state) term->seen_disp_event = TRUE;
1306 compatibility(OTHER);
1308 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
1309 if (!state && !term->cfg.no_alt_screen)
1310 save_cursor(term, state);
1315 case 4: /* IRM: set insert mode */
1316 compatibility(VT102);
1317 term->insert = state;
1319 case 12: /* SRM: set echo mode */
1320 term->term_echoing = !state;
1321 if (term->ldisc) /* cause ldisc to notice changes */
1322 ldisc_send(term->ldisc, NULL, 0, 0);
1324 case 20: /* LNM: Return sends ... */
1325 term->cr_lf_return = state;
1327 case 34: /* WYULCURM: Make cursor BIG */
1328 compatibility2(OTHER, VT220);
1329 term->big_cursor = !state;
1334 * Process an OSC sequence: set window title or icon name.
1336 static void do_osc(Terminal *term)
1339 while (term->osc_strlen--)
1340 term->wordness[(unsigned char)
1341 term->osc_string[term->osc_strlen]] = term->esc_args[0];
1343 term->osc_string[term->osc_strlen] = '\0';
1344 switch (term->esc_args[0]) {
1347 if (!term->cfg.no_remote_wintitle)
1348 set_icon(term->frontend, term->osc_string);
1349 if (term->esc_args[0] == 1)
1351 /* fall through: parameter 0 means set both */
1354 if (!term->cfg.no_remote_wintitle)
1355 set_title(term->frontend, term->osc_string);
1362 * ANSI printing routines.
1364 static void term_print_setup(Terminal *term)
1366 bufchain_clear(&term->printer_buf);
1367 term->print_job = printer_start_job(term->cfg.printer);
1369 static void term_print_flush(Terminal *term)
1374 while ((size = bufchain_size(&term->printer_buf)) > 5) {
1375 bufchain_prefix(&term->printer_buf, &data, &len);
1378 printer_job_data(term->print_job, data, len);
1379 bufchain_consume(&term->printer_buf, len);
1382 static void term_print_finish(Terminal *term)
1388 if (!term->printing && !term->only_printing)
1389 return; /* we need do nothing */
1391 term_print_flush(term);
1392 while ((size = bufchain_size(&term->printer_buf)) > 0) {
1393 bufchain_prefix(&term->printer_buf, &data, &len);
1395 if (c == '\033' || c == '\233') {
1396 bufchain_consume(&term->printer_buf, size);
1399 printer_job_data(term->print_job, &c, 1);
1400 bufchain_consume(&term->printer_buf, 1);
1403 printer_finish_job(term->print_job);
1404 term->print_job = NULL;
1405 term->printing = term->only_printing = FALSE;
1409 * Remove everything currently in `inbuf' and stick it up on the
1410 * in-memory display. There's a big state machine in here to
1411 * process escape sequences...
1413 void term_out(Terminal *term)
1416 unsigned char localbuf[256], *chars;
1421 chars = NULL; /* placate compiler warnings */
1422 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
1426 bufchain_prefix(&term->inbuf, &ret, &nchars);
1427 if (nchars > sizeof(localbuf))
1428 nchars = sizeof(localbuf);
1429 memcpy(localbuf, ret, nchars);
1430 bufchain_consume(&term->inbuf, nchars);
1432 assert(chars != NULL);
1438 * Optionally log the session traffic to a file. Useful for
1439 * debugging and possibly also useful for actual logging.
1441 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
1442 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
1448 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1449 * be able to display 8-bit characters, but I'll let that go 'cause
1454 * If we're printing, add the character to the printer
1457 if (term->printing) {
1458 bufchain_add(&term->printer_buf, &c, 1);
1461 * If we're in print-only mode, we use a much simpler
1462 * state machine designed only to recognise the ESC[4i
1463 * termination sequence.
1465 if (term->only_printing) {
1467 term->print_state = 1;
1468 else if (c == (unsigned char)'\233')
1469 term->print_state = 2;
1470 else if (c == '[' && term->print_state == 1)
1471 term->print_state = 2;
1472 else if (c == '4' && term->print_state == 2)
1473 term->print_state = 3;
1474 else if (c == 'i' && term->print_state == 3)
1475 term->print_state = 4;
1477 term->print_state = 0;
1478 if (term->print_state == 4) {
1479 term_print_finish(term);
1485 /* First see about all those translations. */
1486 if (term->termstate == TOPLEVEL) {
1488 switch (term->utf_state) {
1491 /* UTF-8 must be stateless so we ignore iso2022. */
1492 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1493 c = term->ucsdata->unitab_ctrl[c];
1494 else c = ((unsigned char)c) | ATTR_ASCII;
1496 } else if ((c & 0xe0) == 0xc0) {
1497 term->utf_size = term->utf_state = 1;
1498 term->utf_char = (c & 0x1f);
1499 } else if ((c & 0xf0) == 0xe0) {
1500 term->utf_size = term->utf_state = 2;
1501 term->utf_char = (c & 0x0f);
1502 } else if ((c & 0xf8) == 0xf0) {
1503 term->utf_size = term->utf_state = 3;
1504 term->utf_char = (c & 0x07);
1505 } else if ((c & 0xfc) == 0xf8) {
1506 term->utf_size = term->utf_state = 4;
1507 term->utf_char = (c & 0x03);
1508 } else if ((c & 0xfe) == 0xfc) {
1509 term->utf_size = term->utf_state = 5;
1510 term->utf_char = (c & 0x01);
1521 if ((c & 0xC0) != 0x80) {
1524 term->utf_state = 0;
1527 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
1528 if (--term->utf_state)
1533 /* Is somebody trying to be evil! */
1535 (c < 0x800 && term->utf_size >= 2) ||
1536 (c < 0x10000 && term->utf_size >= 3) ||
1537 (c < 0x200000 && term->utf_size >= 4) ||
1538 (c < 0x4000000 && term->utf_size >= 5))
1541 /* Unicode line separator and paragraph separator are CR-LF */
1542 if (c == 0x2028 || c == 0x2029)
1545 /* High controls are probably a Baaad idea too. */
1549 /* The UTF-16 surrogates are not nice either. */
1550 /* The standard give the option of decoding these:
1551 * I don't want to! */
1552 if (c >= 0xD800 && c < 0xE000)
1555 /* ISO 10646 characters now limited to UTF-16 range. */
1559 /* This is currently a TagPhobic application.. */
1560 if (c >= 0xE0000 && c <= 0xE007F)
1563 /* U+FEFF is best seen as a null. */
1566 /* But U+FFFE is an error. */
1567 if (c == 0xFFFE || c == 0xFFFF)
1570 /* Oops this is a 16bit implementation */
1575 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
1576 else if(term->sco_acs &&
1577 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
1579 if (term->sco_acs == 2) c |= 0x80;
1582 switch (term->cset_attr[term->cset]) {
1584 * Linedraw characters are different from 'ESC ( B'
1585 * only for a small range. For ones outside that
1586 * range, make sure we use the same font as well as
1587 * the same encoding.
1590 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1591 c = term->ucsdata->unitab_ctrl[c];
1593 c = ((unsigned char) c) | ATTR_LINEDRW;
1597 /* If UK-ASCII, make the '#' a LineDraw Pound */
1599 c = '}' | ATTR_LINEDRW;
1602 /*FALLTHROUGH*/ case ATTR_ASCII:
1603 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1604 c = term->ucsdata->unitab_ctrl[c];
1606 c = ((unsigned char) c) | ATTR_ASCII;
1609 if (c>=' ') c = ((unsigned char)c) | ATTR_SCOACS;
1615 /* How about C1 controls ? */
1616 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
1617 !term->vt52_mode && has_compat(VT220)) {
1618 term->termstate = SEEN_ESC;
1619 term->esc_query = FALSE;
1620 c = '@' + (c & 0x1F);
1623 /* Or the GL control. */
1624 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
1625 if (term->curs.x && !term->wrapnext)
1627 term->wrapnext = FALSE;
1629 if (!term->cfg.no_dbackspace) { /* destructive bksp might be disabled */
1630 check_boundary(term, term->curs.x, term->curs.y);
1631 check_boundary(term, term->curs.x+1, term->curs.y);
1632 *term->cpos = (' ' | term->curr_attr | ATTR_ASCII);
1635 /* Or normal C0 controls. */
1636 if ((c & -32) == 0 && term->termstate < DO_CTRLS) {
1638 case '\005': /* ENQ: terminal type query */
1639 /* Strictly speaking this is VT100 but a VT100 defaults to
1640 * no response. Other terminals respond at their option.
1642 * Don't put a CR in the default string as this tends to
1643 * upset some weird software.
1645 * An xterm returns "xterm" (5 characters)
1647 compatibility(ANSIMIN);
1649 char abuf[256], *s, *d;
1651 for (s = term->cfg.answerback, d = abuf; *s; s++) {
1653 if (*s >= 'a' && *s <= 'z')
1654 *d++ = (*s - ('a' - 1));
1655 else if ((*s >= '@' && *s <= '_') ||
1656 *s == '?' || (*s & 0x80))
1661 } else if (*s == '^') {
1666 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
1670 case '\007': /* BEL: Bell */
1672 struct beeptime *newbeep;
1673 unsigned long ticks;
1675 ticks = GETTICKCOUNT();
1677 if (!term->beep_overloaded) {
1678 newbeep = snew(struct beeptime);
1679 newbeep->ticks = ticks;
1680 newbeep->next = NULL;
1681 if (!term->beephead)
1682 term->beephead = newbeep;
1684 term->beeptail->next = newbeep;
1685 term->beeptail = newbeep;
1690 * Throw out any beeps that happened more than
1693 while (term->beephead &&
1694 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
1695 struct beeptime *tmp = term->beephead;
1696 term->beephead = tmp->next;
1698 if (!term->beephead)
1699 term->beeptail = NULL;
1703 if (term->cfg.bellovl && term->beep_overloaded &&
1704 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
1706 * If we're currently overloaded and the
1707 * last beep was more than s seconds ago,
1708 * leave overload mode.
1710 term->beep_overloaded = FALSE;
1711 } else if (term->cfg.bellovl && !term->beep_overloaded &&
1712 term->nbeeps >= term->cfg.bellovl_n) {
1714 * Now, if we have n or more beeps
1715 * remaining in the queue, go into overload
1718 term->beep_overloaded = TRUE;
1720 term->lastbeep = ticks;
1723 * Perform an actual beep if we're not overloaded.
1725 if (!term->cfg.bellovl || !term->beep_overloaded) {
1726 beep(term->frontend, term->cfg.beep);
1727 if (term->cfg.beep == BELL_VISUAL) {
1728 term->in_vbell = TRUE;
1729 term->vbell_startpoint = ticks;
1733 term->seen_disp_event = TRUE;
1736 case '\b': /* BS: Back space */
1737 if (term->curs.x == 0 &&
1738 (term->curs.y == 0 || term->wrap == 0))
1740 else if (term->curs.x == 0 && term->curs.y > 0)
1741 term->curs.x = term->cols - 1, term->curs.y--;
1742 else if (term->wrapnext)
1743 term->wrapnext = FALSE;
1747 term->seen_disp_event = TRUE;
1749 case '\016': /* LS1: Locking-shift one */
1750 compatibility(VT100);
1753 case '\017': /* LS0: Locking-shift zero */
1754 compatibility(VT100);
1757 case '\033': /* ESC: Escape */
1758 if (term->vt52_mode)
1759 term->termstate = VT52_ESC;
1761 compatibility(ANSIMIN);
1762 term->termstate = SEEN_ESC;
1763 term->esc_query = FALSE;
1766 case '\015': /* CR: Carriage return */
1768 term->wrapnext = FALSE;
1770 term->seen_disp_event = TRUE;
1771 term->paste_hold = 0;
1773 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1775 case '\014': /* FF: Form feed */
1776 if (has_compat(SCOANSI)) {
1777 move(term, 0, 0, 0);
1778 erase_lots(term, FALSE, FALSE, TRUE);
1780 term->wrapnext = FALSE;
1781 term->seen_disp_event = 1;
1784 case '\013': /* VT: Line tabulation */
1785 compatibility(VT100);
1786 case '\012': /* LF: Line feed */
1787 if (term->curs.y == term->marg_b)
1788 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1789 else if (term->curs.y < term->rows - 1)
1791 if (term->cfg.lfhascr)
1794 term->wrapnext = FALSE;
1795 term->seen_disp_event = 1;
1796 term->paste_hold = 0;
1798 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1800 case '\t': /* HT: Character tabulation */
1802 pos old_curs = term->curs;
1803 unsigned long *ldata = lineptr(term->curs.y);
1807 } while (term->curs.x < term->cols - 1 &&
1808 !term->tabs[term->curs.x]);
1810 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM) {
1811 if (term->curs.x >= term->cols / 2)
1812 term->curs.x = term->cols / 2 - 1;
1814 if (term->curs.x >= term->cols)
1815 term->curs.x = term->cols - 1;
1819 check_selection(term, old_curs, term->curs);
1821 term->seen_disp_event = TRUE;
1825 switch (term->termstate) {
1827 /* Only graphic characters get this far;
1828 * ctrls are stripped above */
1829 if (term->wrapnext && term->wrap) {
1830 term->cpos[1] |= LATTR_WRAPPED;
1831 if (term->curs.y == term->marg_b)
1832 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1833 else if (term->curs.y < term->rows - 1)
1837 term->wrapnext = FALSE;
1841 if (term->selstate != NO_SELECTION) {
1842 pos cursplus = term->curs;
1844 check_selection(term, term->curs, cursplus);
1846 if (((c & CSET_MASK) == ATTR_ASCII || (c & CSET_MASK) == 0) &&
1848 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1854 width = wcwidth((wchar_t) c);
1858 * If we're about to display a double-width
1859 * character starting in the rightmost
1860 * column, then we do something special
1861 * instead. We must print a space in the
1862 * last column of the screen, then wrap;
1863 * and we also set LATTR_WRAPPED2 which
1864 * instructs subsequent cut-and-pasting not
1865 * only to splice this line to the one
1866 * after it, but to ignore the space in the
1867 * last character position as well.
1868 * (Because what was actually output to the
1869 * terminal was presumably just a sequence
1870 * of CJK characters, and we don't want a
1871 * space to be pasted in the middle of
1872 * those just because they had the
1873 * misfortune to start in the wrong parity
1874 * column. xterm concurs.)
1876 check_boundary(term, term->curs.x, term->curs.y);
1877 check_boundary(term, term->curs.x+2, term->curs.y);
1878 if (term->curs.x == term->cols-1) {
1879 *term->cpos++ = ATTR_ASCII | ' ' | term->curr_attr;
1880 *term->cpos |= LATTR_WRAPPED | LATTR_WRAPPED2;
1881 if (term->curs.y == term->marg_b)
1882 scroll(term, term->marg_t, term->marg_b,
1884 else if (term->curs.y < term->rows - 1)
1888 /* Now we must check_boundary again, of course. */
1889 check_boundary(term, term->curs.x, term->curs.y);
1890 check_boundary(term, term->curs.x+2, term->curs.y);
1892 *term->cpos++ = c | term->curr_attr;
1893 *term->cpos++ = UCSWIDE | term->curr_attr;
1897 check_boundary(term, term->curs.x, term->curs.y);
1898 check_boundary(term, term->curs.x+1, term->curs.y);
1899 *term->cpos++ = c | term->curr_attr;
1906 if (term->curs.x == term->cols) {
1909 term->wrapnext = TRUE;
1910 if (term->wrap && term->vt52_mode) {
1911 term->cpos[1] |= LATTR_WRAPPED;
1912 if (term->curs.y == term->marg_b)
1913 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1914 else if (term->curs.y < term->rows - 1)
1918 term->wrapnext = FALSE;
1921 term->seen_disp_event = 1;
1926 * This state is virtually identical to SEEN_ESC, with the
1927 * exception that we have an OSC sequence in the pipeline,
1928 * and _if_ we see a backslash, we process it.
1932 term->termstate = TOPLEVEL;
1935 /* else fall through */
1937 if (c >= ' ' && c <= '/') {
1938 if (term->esc_query)
1939 term->esc_query = -1;
1941 term->esc_query = c;
1944 term->termstate = TOPLEVEL;
1945 switch (ANSI(c, term->esc_query)) {
1946 case '[': /* enter CSI mode */
1947 term->termstate = SEEN_CSI;
1948 term->esc_nargs = 1;
1949 term->esc_args[0] = ARG_DEFAULT;
1950 term->esc_query = FALSE;
1952 case ']': /* OSC: xterm escape sequences */
1953 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1954 compatibility(OTHER);
1955 term->termstate = SEEN_OSC;
1956 term->esc_args[0] = 0;
1958 case '7': /* DECSC: save cursor */
1959 compatibility(VT100);
1960 save_cursor(term, TRUE);
1962 case '8': /* DECRC: restore cursor */
1963 compatibility(VT100);
1964 save_cursor(term, FALSE);
1965 term->seen_disp_event = TRUE;
1967 case '=': /* DECKPAM: Keypad application mode */
1968 compatibility(VT100);
1969 term->app_keypad_keys = TRUE;
1971 case '>': /* DECKPNM: Keypad numeric mode */
1972 compatibility(VT100);
1973 term->app_keypad_keys = FALSE;
1975 case 'D': /* IND: exactly equivalent to LF */
1976 compatibility(VT100);
1977 if (term->curs.y == term->marg_b)
1978 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1979 else if (term->curs.y < term->rows - 1)
1982 term->wrapnext = FALSE;
1983 term->seen_disp_event = TRUE;
1985 case 'E': /* NEL: exactly equivalent to CR-LF */
1986 compatibility(VT100);
1988 if (term->curs.y == term->marg_b)
1989 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1990 else if (term->curs.y < term->rows - 1)
1993 term->wrapnext = FALSE;
1994 term->seen_disp_event = TRUE;
1996 case 'M': /* RI: reverse index - backwards LF */
1997 compatibility(VT100);
1998 if (term->curs.y == term->marg_t)
1999 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
2000 else if (term->curs.y > 0)
2003 term->wrapnext = FALSE;
2004 term->seen_disp_event = TRUE;
2006 case 'Z': /* DECID: terminal type query */
2007 compatibility(VT100);
2009 ldisc_send(term->ldisc, term->id_string,
2010 strlen(term->id_string), 0);
2012 case 'c': /* RIS: restore power-on settings */
2013 compatibility(VT100);
2015 if (term->ldisc) /* cause ldisc to notice changes */
2016 ldisc_send(term->ldisc, NULL, 0, 0);
2017 if (term->reset_132) {
2018 if (!term->cfg.no_remote_resize)
2019 request_resize(term->frontend, 80, term->rows);
2020 term->reset_132 = 0;
2024 term->seen_disp_event = TRUE;
2026 case 'H': /* HTS: set a tab */
2027 compatibility(VT100);
2028 term->tabs[term->curs.x] = TRUE;
2031 case ANSI('8', '#'): /* DECALN: fills screen with Es :-) */
2032 compatibility(VT100);
2034 unsigned long *ldata;
2038 for (i = 0; i < term->rows; i++) {
2040 for (j = 0; j < term->cols; j++)
2041 ldata[j] = ATTR_DEFAULT | 'E';
2042 ldata[term->cols] = 0;
2045 term->seen_disp_event = TRUE;
2046 scrtop.x = scrtop.y = 0;
2048 scrbot.y = term->rows;
2049 check_selection(term, scrtop, scrbot);
2053 case ANSI('3', '#'):
2054 case ANSI('4', '#'):
2055 case ANSI('5', '#'):
2056 case ANSI('6', '#'):
2057 compatibility(VT100);
2059 unsigned long nlattr;
2060 unsigned long *ldata;
2061 switch (ANSI(c, term->esc_query)) {
2062 case ANSI('3', '#'): /* DECDHL: 2*height, top */
2065 case ANSI('4', '#'): /* DECDHL: 2*height, bottom */
2068 case ANSI('5', '#'): /* DECSWL: normal */
2069 nlattr = LATTR_NORM;
2071 default: /* case ANSI('6', '#'): DECDWL: 2*width */
2072 nlattr = LATTR_WIDE;
2075 ldata = lineptr(term->curs.y);
2076 ldata[term->cols] &= ~LATTR_MODE;
2077 ldata[term->cols] |= nlattr;
2080 /* GZD4: G0 designate 94-set */
2081 case ANSI('A', '('):
2082 compatibility(VT100);
2083 if (!term->cfg.no_remote_charset)
2084 term->cset_attr[0] = ATTR_GBCHR;
2086 case ANSI('B', '('):
2087 compatibility(VT100);
2088 if (!term->cfg.no_remote_charset)
2089 term->cset_attr[0] = ATTR_ASCII;
2091 case ANSI('0', '('):
2092 compatibility(VT100);
2093 if (!term->cfg.no_remote_charset)
2094 term->cset_attr[0] = ATTR_LINEDRW;
2096 case ANSI('U', '('):
2097 compatibility(OTHER);
2098 if (!term->cfg.no_remote_charset)
2099 term->cset_attr[0] = ATTR_SCOACS;
2101 /* G1D4: G1-designate 94-set */
2102 case ANSI('A', ')'):
2103 compatibility(VT100);
2104 if (!term->cfg.no_remote_charset)
2105 term->cset_attr[1] = ATTR_GBCHR;
2107 case ANSI('B', ')'):
2108 compatibility(VT100);
2109 if (!term->cfg.no_remote_charset)
2110 term->cset_attr[1] = ATTR_ASCII;
2112 case ANSI('0', ')'):
2113 compatibility(VT100);
2114 if (!term->cfg.no_remote_charset)
2115 term->cset_attr[1] = ATTR_LINEDRW;
2117 case ANSI('U', ')'):
2118 compatibility(OTHER);
2119 if (!term->cfg.no_remote_charset)
2120 term->cset_attr[1] = ATTR_SCOACS;
2122 /* DOCS: Designate other coding system */
2123 case ANSI('8', '%'): /* Old Linux code */
2124 case ANSI('G', '%'):
2125 compatibility(OTHER);
2126 if (!term->cfg.no_remote_charset)
2129 case ANSI('@', '%'):
2130 compatibility(OTHER);
2131 if (!term->cfg.no_remote_charset)
2137 term->termstate = TOPLEVEL; /* default */
2139 if (term->esc_nargs <= ARGS_MAX) {
2140 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
2141 term->esc_args[term->esc_nargs - 1] = 0;
2142 term->esc_args[term->esc_nargs - 1] =
2143 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
2145 term->termstate = SEEN_CSI;
2146 } else if (c == ';') {
2147 if (++term->esc_nargs <= ARGS_MAX)
2148 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
2149 term->termstate = SEEN_CSI;
2150 } else if (c < '@') {
2151 if (term->esc_query)
2152 term->esc_query = -1;
2154 term->esc_query = TRUE;
2156 term->esc_query = c;
2157 term->termstate = SEEN_CSI;
2159 switch (ANSI(c, term->esc_query)) {
2160 case 'A': /* CUU: move up N lines */
2161 move(term, term->curs.x,
2162 term->curs.y - def(term->esc_args[0], 1), 1);
2163 term->seen_disp_event = TRUE;
2165 case 'e': /* VPR: move down N lines */
2166 compatibility(ANSI);
2168 case 'B': /* CUD: Cursor down */
2169 move(term, term->curs.x,
2170 term->curs.y + def(term->esc_args[0], 1), 1);
2171 term->seen_disp_event = TRUE;
2173 case ANSI('c', '>'): /* DA: report xterm version */
2174 compatibility(OTHER);
2175 /* this reports xterm version 136 so that VIM can
2176 use the drag messages from the mouse reporting */
2178 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
2180 case 'a': /* HPR: move right N cols */
2181 compatibility(ANSI);
2183 case 'C': /* CUF: Cursor right */
2184 move(term, term->curs.x + def(term->esc_args[0], 1),
2186 term->seen_disp_event = TRUE;
2188 case 'D': /* CUB: move left N cols */
2189 move(term, term->curs.x - def(term->esc_args[0], 1),
2191 term->seen_disp_event = TRUE;
2193 case 'E': /* CNL: move down N lines and CR */
2194 compatibility(ANSI);
2196 term->curs.y + def(term->esc_args[0], 1), 1);
2197 term->seen_disp_event = TRUE;
2199 case 'F': /* CPL: move up N lines and CR */
2200 compatibility(ANSI);
2202 term->curs.y - def(term->esc_args[0], 1), 1);
2203 term->seen_disp_event = TRUE;
2206 case '`': /* HPA: set horizontal posn */
2207 compatibility(ANSI);
2208 move(term, def(term->esc_args[0], 1) - 1,
2210 term->seen_disp_event = TRUE;
2212 case 'd': /* VPA: set vertical posn */
2213 compatibility(ANSI);
2214 move(term, term->curs.x,
2215 ((term->dec_om ? term->marg_t : 0) +
2216 def(term->esc_args[0], 1) - 1),
2217 (term->dec_om ? 2 : 0));
2218 term->seen_disp_event = TRUE;
2221 case 'f': /* HVP: set horz and vert posns at once */
2222 if (term->esc_nargs < 2)
2223 term->esc_args[1] = ARG_DEFAULT;
2224 move(term, def(term->esc_args[1], 1) - 1,
2225 ((term->dec_om ? term->marg_t : 0) +
2226 def(term->esc_args[0], 1) - 1),
2227 (term->dec_om ? 2 : 0));
2228 term->seen_disp_event = TRUE;
2230 case 'J': /* ED: erase screen or parts of it */
2232 unsigned int i = def(term->esc_args[0], 0) + 1;
2235 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
2238 term->seen_disp_event = TRUE;
2240 case 'K': /* EL: erase line or parts of it */
2242 unsigned int i = def(term->esc_args[0], 0) + 1;
2245 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
2247 term->seen_disp_event = TRUE;
2249 case 'L': /* IL: insert lines */
2250 compatibility(VT102);
2251 if (term->curs.y <= term->marg_b)
2252 scroll(term, term->curs.y, term->marg_b,
2253 -def(term->esc_args[0], 1), FALSE);
2255 term->seen_disp_event = TRUE;
2257 case 'M': /* DL: delete lines */
2258 compatibility(VT102);
2259 if (term->curs.y <= term->marg_b)
2260 scroll(term, term->curs.y, term->marg_b,
2261 def(term->esc_args[0], 1),
2264 term->seen_disp_event = TRUE;
2266 case '@': /* ICH: insert chars */
2267 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
2268 compatibility(VT102);
2269 insch(term, def(term->esc_args[0], 1));
2270 term->seen_disp_event = TRUE;
2272 case 'P': /* DCH: delete chars */
2273 compatibility(VT102);
2274 insch(term, -def(term->esc_args[0], 1));
2275 term->seen_disp_event = TRUE;
2277 case 'c': /* DA: terminal type query */
2278 compatibility(VT100);
2279 /* This is the response for a VT102 */
2281 ldisc_send(term->ldisc, term->id_string,
2282 strlen(term->id_string), 0);
2284 case 'n': /* DSR: cursor position query */
2286 if (term->esc_args[0] == 6) {
2288 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
2290 ldisc_send(term->ldisc, buf, strlen(buf), 0);
2291 } else if (term->esc_args[0] == 5) {
2292 ldisc_send(term->ldisc, "\033[0n", 4, 0);
2296 case 'h': /* SM: toggle modes to high */
2298 compatibility(VT100);
2301 for (i = 0; i < term->esc_nargs; i++)
2302 toggle_mode(term, term->esc_args[i],
2303 term->esc_query, TRUE);
2306 case 'i': /* MC: Media copy */
2308 compatibility(VT100);
2310 if (term->esc_nargs != 1) break;
2311 if (term->esc_args[0] == 5 && *term->cfg.printer) {
2312 term->printing = TRUE;
2313 term->only_printing = !term->esc_query;
2314 term->print_state = 0;
2315 term_print_setup(term);
2316 } else if (term->esc_args[0] == 4 &&
2318 term_print_finish(term);
2322 case 'l': /* RM: toggle modes to low */
2324 compatibility(VT100);
2327 for (i = 0; i < term->esc_nargs; i++)
2328 toggle_mode(term, term->esc_args[i],
2329 term->esc_query, FALSE);
2332 case 'g': /* TBC: clear tabs */
2333 compatibility(VT100);
2334 if (term->esc_nargs == 1) {
2335 if (term->esc_args[0] == 0) {
2336 term->tabs[term->curs.x] = FALSE;
2337 } else if (term->esc_args[0] == 3) {
2339 for (i = 0; i < term->cols; i++)
2340 term->tabs[i] = FALSE;
2344 case 'r': /* DECSTBM: set scroll margins */
2345 compatibility(VT100);
2346 if (term->esc_nargs <= 2) {
2348 top = def(term->esc_args[0], 1) - 1;
2349 bot = (term->esc_nargs <= 1
2350 || term->esc_args[1] == 0 ?
2352 def(term->esc_args[1], term->rows)) - 1;
2353 if (bot >= term->rows)
2354 bot = term->rows - 1;
2355 /* VTTEST Bug 9 - if region is less than 2 lines
2356 * don't change region.
2358 if (bot - top > 0) {
2363 * I used to think the cursor should be
2364 * placed at the top of the newly marginned
2365 * area. Apparently not: VMS TPU falls over
2368 * Well actually it should for
2371 term->curs.y = (term->dec_om ?
2374 term->seen_disp_event = TRUE;
2378 case 'm': /* SGR: set graphics rendition */
2381 * A VT100 without the AVO only had one
2382 * attribute, either underline or
2383 * reverse video depending on the
2384 * cursor type, this was selected by
2388 * This is sometimes DIM, eg on the
2391 * This is sometimes INVIS various ANSI.
2393 * This like 22 disables BOLD, DIM and INVIS
2395 * The ANSI colours appear on any
2396 * terminal that has colour (obviously)
2397 * but the interaction between sgr0 and
2398 * the colours varies but is usually
2399 * related to the background colour
2400 * erase item. The interaction between
2401 * colour attributes and the mono ones
2402 * is also very implementation
2405 * The 39 and 49 attributes are likely
2406 * to be unimplemented.
2409 for (i = 0; i < term->esc_nargs; i++) {
2410 switch (def(term->esc_args[i], 0)) {
2411 case 0: /* restore defaults */
2412 term->curr_attr = term->default_attr;
2414 case 1: /* enable bold */
2415 compatibility(VT100AVO);
2416 term->curr_attr |= ATTR_BOLD;
2418 case 21: /* (enable double underline) */
2419 compatibility(OTHER);
2420 case 4: /* enable underline */
2421 compatibility(VT100AVO);
2422 term->curr_attr |= ATTR_UNDER;
2424 case 5: /* enable blink */
2425 compatibility(VT100AVO);
2426 term->curr_attr |= ATTR_BLINK;
2428 case 6: /* SCO light bkgrd */
2429 compatibility(SCOANSI);
2430 term->blink_is_real = FALSE;
2431 term->curr_attr |= ATTR_BLINK;
2433 case 7: /* enable reverse video */
2434 term->curr_attr |= ATTR_REVERSE;
2436 case 10: /* SCO acs off */
2437 compatibility(SCOANSI);
2438 if (term->cfg.no_remote_charset) break;
2439 term->sco_acs = 0; break;
2440 case 11: /* SCO acs on */
2441 compatibility(SCOANSI);
2442 if (term->cfg.no_remote_charset) break;
2443 term->sco_acs = 1; break;
2444 case 12: /* SCO acs on, |0x80 */
2445 compatibility(SCOANSI);
2446 if (term->cfg.no_remote_charset) break;
2447 term->sco_acs = 2; break;
2448 case 22: /* disable bold */
2449 compatibility2(OTHER, VT220);
2450 term->curr_attr &= ~ATTR_BOLD;
2452 case 24: /* disable underline */
2453 compatibility2(OTHER, VT220);
2454 term->curr_attr &= ~ATTR_UNDER;
2456 case 25: /* disable blink */
2457 compatibility2(OTHER, VT220);
2458 term->curr_attr &= ~ATTR_BLINK;
2460 case 27: /* disable reverse video */
2461 compatibility2(OTHER, VT220);
2462 term->curr_attr &= ~ATTR_REVERSE;
2473 term->curr_attr &= ~ATTR_FGMASK;
2475 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
2485 /* xterm-style bright foreground */
2486 term->curr_attr &= ~ATTR_FGMASK;
2488 ((term->esc_args[i] - 90 + 16)
2491 case 39: /* default-foreground */
2492 term->curr_attr &= ~ATTR_FGMASK;
2493 term->curr_attr |= ATTR_DEFFG;
2504 term->curr_attr &= ~ATTR_BGMASK;
2506 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
2516 /* xterm-style bright background */
2517 term->curr_attr &= ~ATTR_BGMASK;
2519 ((term->esc_args[i] - 100 + 16)
2522 case 49: /* default-background */
2523 term->curr_attr &= ~ATTR_BGMASK;
2524 term->curr_attr |= ATTR_DEFBG;
2529 term->erase_char = (' ' | ATTR_ASCII |
2535 case 's': /* save cursor */
2536 save_cursor(term, TRUE);
2538 case 'u': /* restore cursor */
2539 save_cursor(term, FALSE);
2540 term->seen_disp_event = TRUE;
2542 case 't': /* DECSLPP: set page size - ie window height */
2544 * VT340/VT420 sequence DECSLPP, DEC only allows values
2545 * 24/25/36/48/72/144 other emulators (eg dtterm) use
2546 * illegal values (eg first arg 1..9) for window changing
2549 if (term->esc_nargs <= 1
2550 && (term->esc_args[0] < 1 ||
2551 term->esc_args[0] >= 24)) {
2552 compatibility(VT340TEXT);
2553 if (!term->cfg.no_remote_resize)
2554 request_resize(term->frontend, term->cols,
2555 def(term->esc_args[0], 24));
2557 } else if (term->esc_nargs >= 1 &&
2558 term->esc_args[0] >= 1 &&
2559 term->esc_args[0] < 24) {
2560 compatibility(OTHER);
2562 switch (term->esc_args[0]) {
2566 set_iconic(term->frontend, FALSE);
2569 set_iconic(term->frontend, TRUE);
2572 if (term->esc_nargs >= 3) {
2573 if (!term->cfg.no_remote_resize)
2574 move_window(term->frontend,
2575 def(term->esc_args[1], 0),
2576 def(term->esc_args[2], 0));
2580 /* We should resize the window to a given
2581 * size in pixels here, but currently our
2582 * resizing code isn't healthy enough to
2587 set_zorder(term->frontend, TRUE);
2590 /* move to bottom */
2591 set_zorder(term->frontend, FALSE);
2594 refresh_window(term->frontend);
2597 if (term->esc_nargs >= 3) {
2598 if (!term->cfg.no_remote_resize)
2599 request_resize(term->frontend,
2600 def(term->esc_args[2], term->cfg.width),
2601 def(term->esc_args[1], term->cfg.height));
2605 if (term->esc_nargs >= 2)
2606 set_zoomed(term->frontend,
2612 ldisc_send(term->ldisc,
2613 is_iconic(term->frontend) ?
2614 "\033[1t" : "\033[2t", 4, 0);
2618 get_window_pos(term->frontend, &x, &y);
2619 len = sprintf(buf, "\033[3;%d;%dt", x, y);
2620 ldisc_send(term->ldisc, buf, len, 0);
2625 get_window_pixels(term->frontend, &x, &y);
2626 len = sprintf(buf, "\033[4;%d;%dt", x, y);
2627 ldisc_send(term->ldisc, buf, len, 0);
2632 len = sprintf(buf, "\033[8;%d;%dt",
2633 term->rows, term->cols);
2634 ldisc_send(term->ldisc, buf, len, 0);
2639 * Hmmm. Strictly speaking we
2640 * should return `the size of the
2641 * screen in characters', but
2642 * that's not easy: (a) window
2643 * furniture being what it is it's
2644 * hard to compute, and (b) in
2645 * resize-font mode maximising the
2646 * window wouldn't change the
2647 * number of characters. *shrug*. I
2648 * think we'll ignore it for the
2649 * moment and see if anyone
2650 * complains, and then ask them
2651 * what they would like it to do.
2656 !term->cfg.no_remote_qtitle) {
2657 p = get_window_title(term->frontend, TRUE);
2659 ldisc_send(term->ldisc, "\033]L", 3, 0);
2660 ldisc_send(term->ldisc, p, len, 0);
2661 ldisc_send(term->ldisc, "\033\\", 2, 0);
2666 !term->cfg.no_remote_qtitle) {
2667 p = get_window_title(term->frontend,FALSE);
2669 ldisc_send(term->ldisc, "\033]l", 3, 0);
2670 ldisc_send(term->ldisc, p, len, 0);
2671 ldisc_send(term->ldisc, "\033\\", 2, 0);
2677 case 'S': /* SU: Scroll up */
2678 compatibility(SCOANSI);
2679 scroll(term, term->marg_t, term->marg_b,
2680 def(term->esc_args[0], 1), TRUE);
2682 term->wrapnext = FALSE;
2683 term->seen_disp_event = TRUE;
2685 case 'T': /* SD: Scroll down */
2686 compatibility(SCOANSI);
2687 scroll(term, term->marg_t, term->marg_b,
2688 -def(term->esc_args[0], 1), TRUE);
2690 term->wrapnext = FALSE;
2691 term->seen_disp_event = TRUE;
2693 case ANSI('|', '*'): /* DECSNLS */
2695 * Set number of lines on screen
2696 * VT420 uses VGA like hardware and can
2697 * support any size in reasonable range
2698 * (24..49 AIUI) with no default specified.
2700 compatibility(VT420);
2701 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
2702 if (!term->cfg.no_remote_resize)
2703 request_resize(term->frontend, term->cols,
2704 def(term->esc_args[0],
2709 case ANSI('|', '$'): /* DECSCPP */
2711 * Set number of columns per page
2712 * Docs imply range is only 80 or 132, but
2715 compatibility(VT340TEXT);
2716 if (term->esc_nargs <= 1) {
2717 if (!term->cfg.no_remote_resize)
2718 request_resize(term->frontend,
2719 def(term->esc_args[0],
2720 term->cfg.width), term->rows);
2724 case 'X': /* ECH: write N spaces w/o moving cursor */
2725 /* XXX VTTEST says this is vt220, vt510 manual
2727 compatibility(ANSIMIN);
2729 int n = def(term->esc_args[0], 1);
2731 unsigned long *p = term->cpos;
2732 if (n > term->cols - term->curs.x)
2733 n = term->cols - term->curs.x;
2734 cursplus = term->curs;
2736 check_boundary(term, term->curs.x, term->curs.y);
2737 check_boundary(term, term->curs.x+n, term->curs.y);
2738 check_selection(term, term->curs, cursplus);
2740 *p++ = term->erase_char;
2741 term->seen_disp_event = TRUE;
2744 case 'x': /* DECREQTPARM: report terminal characteristics */
2745 compatibility(VT100);
2748 int i = def(term->esc_args[0], 0);
2749 if (i == 0 || i == 1) {
2750 strcpy(buf, "\033[2;1;1;112;112;1;0x");
2752 ldisc_send(term->ldisc, buf, 20, 0);
2756 case 'Z': /* CBT: BackTab for xterm */
2757 compatibility(OTHER);
2759 int i = def(term->esc_args[0], 1);
2760 pos old_curs = term->curs;
2762 for(;i>0 && term->curs.x>0; i--) {
2765 } while (term->curs.x >0 &&
2766 !term->tabs[term->curs.x]);
2769 check_selection(term, old_curs, term->curs);
2772 case ANSI('c', '='): /* Hide or Show Cursor */
2773 compatibility(SCOANSI);
2774 switch(term->esc_args[0]) {
2775 case 0: /* hide cursor */
2776 term->cursor_on = FALSE;
2778 case 1: /* restore cursor */
2779 term->big_cursor = FALSE;
2780 term->cursor_on = TRUE;
2782 case 2: /* block cursor */
2783 term->big_cursor = TRUE;
2784 term->cursor_on = TRUE;
2788 case ANSI('C', '='):
2790 * set cursor start on scanline esc_args[0] and
2791 * end on scanline esc_args[1].If you set
2792 * the bottom scan line to a value less than
2793 * the top scan line, the cursor will disappear.
2795 compatibility(SCOANSI);
2796 if (term->esc_nargs >= 2) {
2797 if (term->esc_args[0] > term->esc_args[1])
2798 term->cursor_on = FALSE;
2800 term->cursor_on = TRUE;
2803 case ANSI('D', '='):
2804 compatibility(SCOANSI);
2805 term->blink_is_real = FALSE;
2806 if (term->esc_args[0]>=1)
2807 term->curr_attr |= ATTR_BLINK;
2809 term->curr_attr &= ~ATTR_BLINK;
2811 case ANSI('E', '='):
2812 compatibility(SCOANSI);
2813 term->blink_is_real = (term->esc_args[0] >= 1);
2815 case ANSI('F', '='): /* set normal foreground */
2816 compatibility(SCOANSI);
2817 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
2819 (sco2ansicolour[term->esc_args[0] & 0x7] |
2820 ((term->esc_args[0] & 0x8) << 1)) <<
2822 term->curr_attr &= ~ATTR_FGMASK;
2823 term->curr_attr |= colour;
2824 term->default_attr &= ~ATTR_FGMASK;
2825 term->default_attr |= colour;
2828 case ANSI('G', '='): /* set normal background */
2829 compatibility(SCOANSI);
2830 if (term->esc_args[0] >= 0 && term->esc_args[0] < 16) {
2832 (sco2ansicolour[term->esc_args[0] & 0x7] |
2833 ((term->esc_args[0] & 0x8) << 1)) <<
2835 term->curr_attr &= ~ATTR_BGMASK;
2836 term->curr_attr |= colour;
2837 term->default_attr &= ~ATTR_BGMASK;
2838 term->default_attr |= colour;
2841 case ANSI('L', '='):
2842 compatibility(SCOANSI);
2843 term->use_bce = (term->esc_args[0] <= 0);
2844 term->erase_char = ERASE_CHAR;
2846 term->erase_char = (' ' | ATTR_ASCII |
2848 (ATTR_FGMASK | ATTR_BGMASK)));
2850 case ANSI('p', '"'): /* DECSCL: set compat level */
2852 * Allow the host to make this emulator a
2853 * 'perfect' VT102. This first appeared in
2854 * the VT220, but we do need to get back to
2855 * PuTTY mode so I won't check it.
2857 * The arg in 40..42,50 are a PuTTY extension.
2858 * The 2nd arg, 8bit vs 7bit is not checked.
2860 * Setting VT102 mode should also change
2861 * the Fkeys to generate PF* codes as a
2862 * real VT102 has no Fkeys. The VT220 does
2863 * this, F11..F13 become ESC,BS,LF other
2864 * Fkeys send nothing.
2866 * Note ESC c will NOT change this!
2869 switch (term->esc_args[0]) {
2871 term->compatibility_level &= ~TM_VTXXX;
2872 term->compatibility_level |= TM_VT102;
2875 term->compatibility_level &= ~TM_VTXXX;
2876 term->compatibility_level |= TM_VT220;
2880 if (term->esc_args[0] > 60 &&
2881 term->esc_args[0] < 70)
2882 term->compatibility_level |= TM_VTXXX;
2886 term->compatibility_level &= TM_VTXXX;
2889 term->compatibility_level = TM_PUTTY;
2892 term->compatibility_level = TM_SCOANSI;
2896 term->compatibility_level = TM_PUTTY;
2902 /* Change the response to CSI c */
2903 if (term->esc_args[0] == 50) {
2906 strcpy(term->id_string, "\033[?");
2907 for (i = 1; i < term->esc_nargs; i++) {
2909 strcat(term->id_string, ";");
2910 sprintf(lbuf, "%d", term->esc_args[i]);
2911 strcat(term->id_string, lbuf);
2913 strcat(term->id_string, "c");
2916 /* Is this a good idea ?
2917 * Well we should do a soft reset at this point ...
2919 if (!has_compat(VT420) && has_compat(VT100)) {
2920 if (!term->cfg.no_remote_resize) {
2921 if (term->reset_132)
2922 request_resize(132, 24);
2924 request_resize(80, 24);
2932 term->osc_w = FALSE;
2934 case 'P': /* Linux palette sequence */
2935 term->termstate = SEEN_OSC_P;
2936 term->osc_strlen = 0;
2938 case 'R': /* Linux palette reset */
2939 palette_reset(term->frontend);
2940 term_invalidate(term);
2941 term->termstate = TOPLEVEL;
2943 case 'W': /* word-set */
2944 term->termstate = SEEN_OSC_W;
2957 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
2961 * Grotty hack to support xterm and DECterm title
2962 * sequences concurrently.
2964 if (term->esc_args[0] == 2) {
2965 term->esc_args[0] = 1;
2968 /* else fall through */
2970 term->termstate = OSC_STRING;
2971 term->osc_strlen = 0;
2976 * This OSC stuff is EVIL. It takes just one character to get into
2977 * sysline mode and it's not initially obvious how to get out.
2978 * So I've added CR and LF as string aborts.
2979 * This shouldn't effect compatibility as I believe embedded
2980 * control characters are supposed to be interpreted (maybe?)
2981 * and they don't display anything useful anyway.
2985 if (c == '\012' || c == '\015') {
2986 term->termstate = TOPLEVEL;
2987 } else if (c == 0234 || c == '\007') {
2989 * These characters terminate the string; ST and BEL
2990 * terminate the sequence and trigger instant
2991 * processing of it, whereas ESC goes back to SEEN_ESC
2992 * mode unless it is followed by \, in which case it is
2993 * synonymous with ST in the first place.
2996 term->termstate = TOPLEVEL;
2997 } else if (c == '\033')
2998 term->termstate = OSC_MAYBE_ST;
2999 else if (term->osc_strlen < OSC_STR_MAX)
3000 term->osc_string[term->osc_strlen++] = c;
3004 int max = (term->osc_strlen == 0 ? 21 : 16);
3006 if (c >= '0' && c <= '9')
3008 else if (c >= 'A' && c <= 'A' + max - 10)
3010 else if (c >= 'a' && c <= 'a' + max - 10)
3013 term->termstate = TOPLEVEL;
3016 term->osc_string[term->osc_strlen++] = val;
3017 if (term->osc_strlen >= 7) {
3018 palette_set(term->frontend, term->osc_string[0],
3019 term->osc_string[1] * 16 + term->osc_string[2],
3020 term->osc_string[3] * 16 + term->osc_string[4],
3021 term->osc_string[5] * 16 + term->osc_string[6]);
3022 term_invalidate(term);
3023 term->termstate = TOPLEVEL;
3039 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
3042 term->termstate = OSC_STRING;
3043 term->osc_strlen = 0;
3047 term->termstate = TOPLEVEL;
3048 term->seen_disp_event = TRUE;
3051 move(term, term->curs.x, term->curs.y - 1, 1);
3054 move(term, term->curs.x, term->curs.y + 1, 1);
3057 move(term, term->curs.x + 1, term->curs.y, 1);
3060 move(term, term->curs.x - 1, term->curs.y, 1);
3063 * From the VT100 Manual
3064 * NOTE: The special graphics characters in the VT100
3065 * are different from those in the VT52
3067 * From VT102 manual:
3068 * 137 _ Blank - Same
3069 * 140 ` Reserved - Humm.
3070 * 141 a Solid rectangle - Similar
3071 * 142 b 1/ - Top half of fraction for the
3072 * 143 c 3/ - subscript numbers below.
3075 * 146 f Degrees - Same
3076 * 147 g Plus or minus - Same
3078 * 151 i Ellipsis (dots)
3081 * 154 l Bar at scan 0
3082 * 155 m Bar at scan 1
3083 * 156 n Bar at scan 2
3084 * 157 o Bar at scan 3 - Similar
3085 * 160 p Bar at scan 4 - Similar
3086 * 161 q Bar at scan 5 - Similar
3087 * 162 r Bar at scan 6 - Same
3088 * 163 s Bar at scan 7 - Similar
3103 term->cset_attr[term->cset = 0] = ATTR_LINEDRW;
3106 term->cset_attr[term->cset = 0] = ATTR_ASCII;
3109 move(term, 0, 0, 0);
3112 if (term->curs.y == 0)
3113 scroll(term, 0, term->rows - 1, -1, TRUE);
3114 else if (term->curs.y > 0)
3117 term->wrapnext = FALSE;
3120 erase_lots(term, FALSE, FALSE, TRUE);
3124 erase_lots(term, TRUE, FALSE, TRUE);
3128 /* XXX Print cursor line */
3131 /* XXX Start controller mode */
3134 /* XXX Stop controller mode */
3138 term->termstate = VT52_Y1;
3142 ldisc_send(term->ldisc, "\033/Z", 3, 0);
3145 term->app_keypad_keys = TRUE;
3148 term->app_keypad_keys = FALSE;
3151 /* XXX This should switch to VT100 mode not current or default
3152 * VT mode. But this will only have effect in a VT220+
3155 term->vt52_mode = FALSE;
3156 term->blink_is_real = term->cfg.blinktext;
3160 /* XXX Enter auto print mode */
3163 /* XXX Exit auto print mode */
3166 /* XXX Print screen */
3172 /* compatibility(ATARI) */
3173 move(term, 0, 0, 0);
3174 erase_lots(term, FALSE, FALSE, TRUE);
3178 /* compatibility(ATARI) */
3179 if (term->curs.y <= term->marg_b)
3180 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
3183 /* compatibility(ATARI) */
3184 if (term->curs.y <= term->marg_b)
3185 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
3188 /* compatibility(ATARI) */
3189 term->termstate = VT52_FG;
3192 /* compatibility(ATARI) */
3193 term->termstate = VT52_BG;
3196 /* compatibility(ATARI) */
3197 erase_lots(term, FALSE, TRUE, FALSE);
3201 /* compatibility(ATARI) */
3202 term->cursor_on = TRUE;
3205 /* compatibility(ATARI) */
3206 term->cursor_on = FALSE;
3208 /* case 'j': Save cursor position - broken on ST */
3209 /* case 'k': Restore cursor position */
3211 /* compatibility(ATARI) */
3212 erase_lots(term, TRUE, TRUE, TRUE);
3214 term->wrapnext = FALSE;
3218 /* compatibility(ATARI) */
3219 erase_lots(term, TRUE, TRUE, FALSE);
3222 /* compatibility(ATARI) */
3223 term->curr_attr |= ATTR_REVERSE;
3226 /* compatibility(ATARI) */
3227 term->curr_attr &= ~ATTR_REVERSE;
3229 case 'v': /* wrap Autowrap on - Wyse style */
3230 /* compatibility(ATARI) */
3233 case 'w': /* Autowrap off */
3234 /* compatibility(ATARI) */
3239 /* compatibility(OTHER) */
3240 term->vt52_bold = FALSE;
3241 term->curr_attr = ATTR_DEFAULT;
3243 term->erase_char = (' ' | ATTR_ASCII |
3245 (ATTR_FGMASK | ATTR_BGMASK)));
3248 /* compatibility(VI50) */
3249 term->curr_attr |= ATTR_UNDER;
3252 /* compatibility(VI50) */
3253 term->curr_attr &= ~ATTR_UNDER;
3256 /* compatibility(VI50) */
3257 term->vt52_bold = TRUE;
3258 term->curr_attr |= ATTR_BOLD;
3261 /* compatibility(VI50) */
3262 term->vt52_bold = FALSE;
3263 term->curr_attr &= ~ATTR_BOLD;
3269 term->termstate = VT52_Y2;
3270 move(term, term->curs.x, c - ' ', 0);
3273 term->termstate = TOPLEVEL;
3274 move(term, c - ' ', term->curs.y, 0);
3279 term->termstate = TOPLEVEL;
3280 term->curr_attr &= ~ATTR_FGMASK;
3281 term->curr_attr &= ~ATTR_BOLD;
3282 term->curr_attr |= (c & 0x7) << ATTR_FGSHIFT;
3283 if ((c & 0x8) || term->vt52_bold)
3284 term->curr_attr |= ATTR_BOLD;
3287 term->erase_char = (' ' | ATTR_ASCII |
3289 (ATTR_FGMASK | ATTR_BGMASK)));
3292 term->termstate = TOPLEVEL;
3293 term->curr_attr &= ~ATTR_BGMASK;
3294 term->curr_attr &= ~ATTR_BLINK;
3295 term->curr_attr |= (c & 0x7) << ATTR_BGSHIFT;
3297 /* Note: bold background */
3299 term->curr_attr |= ATTR_BLINK;
3302 term->erase_char = (' ' | ATTR_ASCII |
3304 (ATTR_FGMASK | ATTR_BGMASK)));
3307 default: break; /* placate gcc warning about enum use */
3309 if (term->selstate != NO_SELECTION) {
3310 pos cursplus = term->curs;
3312 check_selection(term, term->curs, cursplus);
3316 term_print_flush(term);
3317 logflush(term->logctx);
3322 * Compare two lines to determine whether they are sufficiently
3323 * alike to scroll-optimise one to the other. Return the degree of
3326 static int linecmp(Terminal *term, unsigned long *a, unsigned long *b)
3330 for (i = n = 0; i < term->cols; i++)
3331 n += (*a++ == *b++);
3337 * To prevent having to run the reasonably tricky bidi algorithm
3338 * too many times, we maintain a cache of the last lineful of data
3339 * fed to the algorithm on each line of the display.
3341 static int term_bidi_cache_hit(Terminal *term, int line,
3342 unsigned long *lbefore, int width)
3344 if (!term->pre_bidi_cache)
3345 return FALSE; /* cache doesn't even exist yet! */
3347 if (line >= term->bidi_cache_size)
3348 return FALSE; /* cache doesn't have this many lines */
3350 if (!term->pre_bidi_cache[line])
3351 return FALSE; /* cache doesn't contain _this_ line */
3353 if (!memcmp(term->pre_bidi_cache[line], lbefore,
3354 width * sizeof(unsigned long)))
3355 return TRUE; /* aha! the line matches the cache */
3357 return FALSE; /* it didn't match. */
3360 static void term_bidi_cache_store(Terminal *term, int line,
3361 unsigned long *lbefore,
3362 unsigned long *lafter, int width)
3364 if (!term->pre_bidi_cache || term->bidi_cache_size <= line) {
3365 int j = term->bidi_cache_size;
3366 term->bidi_cache_size = line+1;
3367 term->pre_bidi_cache = sresize(term->pre_bidi_cache,
3368 term->bidi_cache_size,
3370 term->post_bidi_cache = sresize(term->post_bidi_cache,
3371 term->bidi_cache_size,
3373 while (j < term->bidi_cache_size) {
3374 term->pre_bidi_cache[j] = term->post_bidi_cache[j] = NULL;
3379 sfree(term->pre_bidi_cache[line]);
3380 sfree(term->post_bidi_cache[line]);
3382 term->pre_bidi_cache[line] = snewn(width, unsigned long);
3383 term->post_bidi_cache[line] = snewn(width, unsigned long);
3385 memcpy(term->pre_bidi_cache[line], lbefore, width * sizeof(unsigned long));
3386 memcpy(term->post_bidi_cache[line], lafter, width * sizeof(unsigned long));
3390 * Given a context, update the window. Out of paranoia, we don't
3391 * allow WM_PAINT responses to do scrolling optimisations.
3393 static void do_paint(Terminal *term, Context ctx, int may_optimise)
3395 int i, it, j, our_curs_y, our_curs_x;
3396 unsigned long rv, cursor;
3399 long cursor_background = ERASE_CHAR;
3400 unsigned long ticks;
3401 #ifdef OPTIMISE_SCROLL
3402 struct scrollregion *sr;
3403 #endif /* OPTIMISE_SCROLL */
3406 * Check the visual bell state.
3408 if (term->in_vbell) {
3409 ticks = GETTICKCOUNT();
3410 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
3411 term->in_vbell = FALSE;
3414 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
3417 * screen array, disptop, scrtop,
3419 * cfg.blinkpc, blink_is_real, tblinker,
3420 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
3423 /* Has the cursor position or type changed ? */
3424 if (term->cursor_on) {
3425 if (term->has_focus) {
3426 if (term->blinker || !term->cfg.blink_cur)
3427 cursor = TATTR_ACTCURS;
3431 cursor = TATTR_PASCURS;
3433 cursor |= TATTR_RIGHTCURS;
3436 our_curs_y = term->curs.y - term->disptop;
3439 * Adjust the cursor position in the case where it's
3440 * resting on the right-hand half of a CJK wide character.
3441 * xterm's behaviour here, which seems adequate to me, is
3442 * to display the cursor covering the _whole_ character,
3443 * exactly as if it were one space to the left.
3445 unsigned long *ldata = lineptr(term->curs.y);
3446 our_curs_x = term->curs.x;
3447 if (our_curs_x > 0 &&
3448 (ldata[our_curs_x] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3452 if (term->dispcurs && (term->curstype != cursor ||
3454 term->disptext + our_curs_y * (term->cols + 1) +
3456 if (term->dispcurs > term->disptext &&
3457 (*term->dispcurs & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3458 term->dispcurs[-1] |= ATTR_INVALID;
3459 if ( (term->dispcurs[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3460 term->dispcurs[1] |= ATTR_INVALID;
3461 *term->dispcurs |= ATTR_INVALID;
3464 term->dispcurs = NULL;
3466 #ifdef OPTIMISE_SCROLL
3468 sr = term->scrollhead;
3470 struct scrollregion *next = sr->next;
3471 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
3475 term->scrollhead = term->scrolltail = NULL;
3476 #endif /* OPTIMISE_SCROLL */
3478 /* The normal screen data */
3479 for (i = 0; i < term->rows; i++) {
3480 unsigned long *ldata;
3482 int idx, dirty_line, dirty_run, selected;
3483 unsigned long attr = 0;
3484 int updated_line = 0;
3487 int last_run_dirty = 0;
3489 scrpos.y = i + term->disptop;
3490 ldata = lineptr(scrpos.y);
3491 lattr = (ldata[term->cols] & LATTR_MODE);
3493 idx = i * (term->cols + 1);
3494 dirty_run = dirty_line = (ldata[term->cols] !=
3495 term->disptext[idx + term->cols]);
3496 term->disptext[idx + term->cols] = ldata[term->cols];
3498 /* Do Arabic shaping and bidi. */
3499 if(!term->cfg.bidi || !term->cfg.arabicshaping) {
3501 if (!term_bidi_cache_hit(term, i, ldata, term->cols)) {
3503 for(it=0; it<term->cols ; it++)
3505 int uc = (ldata[it] & 0xFFFF);
3507 switch (uc & CSET_MASK) {
3509 if (!term->cfg.rawcnp) {
3510 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
3514 uc = term->ucsdata->unitab_line[uc & 0xFF];
3517 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
3520 switch (uc & CSET_MASK) {
3522 uc = term->ucsdata->unitab_font[uc & 0xFF];
3525 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
3529 term->wcFrom[it].origwc = term->wcFrom[it].wc = uc;
3530 term->wcFrom[it].index = it;
3534 do_bidi(term->wcFrom, term->cols);
3536 /* this is saved iff done from inside the shaping */
3537 if(!term->cfg.bidi && term->cfg.arabicshaping)
3538 for(it=0; it<term->cols; it++)
3539 term->wcTo[it] = term->wcFrom[it];
3541 if(!term->cfg.arabicshaping)
3542 do_shape(term->wcFrom, term->wcTo, term->cols);
3544 for(it=0; it<term->cols ; it++)
3546 term->ltemp[it] = ldata[term->wcTo[it].index];
3548 if (term->wcTo[it].origwc != term->wcTo[it].wc)
3549 term->ltemp[it] = ((term->ltemp[it] & 0xFFFF0000) |
3552 term_bidi_cache_store(term, i, ldata, term->ltemp, term->cols);
3553 ldata = term->ltemp;
3555 ldata = term->post_bidi_cache[i];
3559 for (j = 0; j < term->cols; j++, idx++) {
3560 unsigned long tattr, tchar;
3561 unsigned long *d = ldata + j;
3565 tchar = (*d & (CHAR_MASK | CSET_MASK));
3566 tattr = (*d & (ATTR_MASK ^ CSET_MASK));
3567 switch (tchar & CSET_MASK) {
3569 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
3572 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
3575 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
3578 tattr |= (tchar & CSET_MASK);
3580 if (j < term->cols-1 &&
3581 (d[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3584 /* Video reversing things */
3585 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
3586 if (term->seltype == LEXICOGRAPHIC)
3587 selected = (posle(term->selstart, scrpos) &&
3588 poslt(scrpos, term->selend));
3590 selected = (posPle(term->selstart, scrpos) &&
3591 posPlt(scrpos, term->selend));
3595 ^ (selected ? ATTR_REVERSE : 0));
3597 /* 'Real' blinking ? */
3598 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
3599 if (term->has_focus && term->tblinker) {
3600 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
3602 tattr &= ~ATTR_BLINK;
3606 * Check the font we'll _probably_ be using to see if
3607 * the character is wide when we don't want it to be.
3609 if ((tchar | tattr) != (term->disptext[idx]& ~ATTR_NARROW)) {
3610 if ((tattr & ATTR_WIDE) == 0 &&
3611 char_width(ctx, (tchar | tattr) & 0xFFFF) == 2)
3612 tattr |= ATTR_NARROW;
3613 } else if (term->disptext[idx]&ATTR_NARROW)
3614 tattr |= ATTR_NARROW;
3616 /* Cursor here ? Save the 'background' */
3617 if (i == our_curs_y && j == our_curs_x) {
3618 cursor_background = tattr | tchar;
3619 term->dispcurs = term->disptext + idx;
3622 if ((term->disptext[idx] ^ tattr) & ATTR_WIDE)
3625 break_run = (((tattr ^ attr) & term->attr_mask) ||
3626 j - start >= sizeof(ch));
3628 /* Special hack for VT100 Linedraw glyphs */
3629 if ((attr & CSET_MASK) == 0x2300 && tchar >= 0xBA
3630 && tchar <= 0xBD) break_run = TRUE;
3632 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
3633 if ((tchar | tattr) == term->disptext[idx])
3635 else if (!dirty_run && ccount == 1)
3640 if ((dirty_run || last_run_dirty) && ccount > 0) {
3641 do_text(ctx, start, i, ch, ccount, attr, lattr);
3647 if (term->ucsdata->dbcs_screenfont)
3648 last_run_dirty = dirty_run;
3649 dirty_run = dirty_line;
3652 if ((tchar | tattr) != term->disptext[idx])
3654 ch[ccount++] = (char) tchar;
3655 term->disptext[idx] = tchar | tattr;
3657 /* If it's a wide char step along to the next one. */
3658 if (tattr & ATTR_WIDE) {
3659 if (++j < term->cols) {
3663 * By construction above, the cursor should not
3664 * be on the right-hand half of this character.
3667 assert(!(i == our_curs_y && j == our_curs_x));
3668 if (term->disptext[idx] != *d)
3670 term->disptext[idx] = *d;
3674 if (dirty_run && ccount > 0) {
3675 do_text(ctx, start, i, ch, ccount, attr, lattr);
3679 /* Cursor on this line ? (and changed) */
3680 if (i == our_curs_y && (term->curstype != cursor || updated_line)) {
3681 ch[0] = (char) (cursor_background & CHAR_MASK);
3682 attr = (cursor_background & ATTR_MASK) | cursor;
3683 do_cursor(ctx, our_curs_x, i, ch, 1, attr, lattr);
3684 term->curstype = cursor;
3690 * Flick the switch that says if blinking things should be shown or hidden.
3693 void term_blink(Terminal *term, int flg)
3695 long now, blink_diff;
3697 now = GETTICKCOUNT();
3698 blink_diff = now - term->last_tblink;
3700 /* Make sure the text blinks no more than 2Hz; we'll use 0.45 s period. */
3701 if (blink_diff < 0 || blink_diff > (TICKSPERSEC * 9 / 20)) {
3702 term->last_tblink = now;
3703 term->tblinker = !term->tblinker;
3708 term->last_blink = now;
3712 blink_diff = now - term->last_blink;
3714 /* Make sure the cursor blinks no faster than system blink rate */
3715 if (blink_diff >= 0 && blink_diff < (long) CURSORBLINK)
3718 term->last_blink = now;
3719 term->blinker = !term->blinker;
3723 * Invalidate the whole screen so it will be repainted in full.
3725 void term_invalidate(Terminal *term)
3729 for (i = 0; i < term->rows * (term->cols + 1); i++)
3730 term->disptext[i] = ATTR_INVALID;
3734 * Paint the window in response to a WM_PAINT message.
3736 void term_paint(Terminal *term, Context ctx,
3737 int left, int top, int right, int bottom, int immediately)
3740 if (left < 0) left = 0;
3741 if (top < 0) top = 0;
3742 if (right >= term->cols) right = term->cols-1;
3743 if (bottom >= term->rows) bottom = term->rows-1;
3745 for (i = top; i <= bottom && i < term->rows; i++) {
3746 if ((term->disptext[i * (term->cols + 1) + term->cols] &
3747 LATTR_MODE) == LATTR_NORM)
3748 for (j = left; j <= right && j < term->cols; j++)
3749 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
3751 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
3752 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
3755 /* This should happen soon enough, also for some reason it sometimes
3756 * fails to actually do anything when re-sizing ... painting the wrong
3760 do_paint (term, ctx, FALSE);
3764 * Attempt to scroll the scrollback. The second parameter gives the
3765 * position we want to scroll to; the first is +1 to denote that
3766 * this position is relative to the beginning of the scrollback, -1
3767 * to denote it is relative to the end, and 0 to denote that it is
3768 * relative to the current position.
3770 void term_scroll(Terminal *term, int rel, int where)
3772 int sbtop = -sblines(term);
3773 #ifdef OPTIMISE_SCROLL
3774 int olddisptop = term->disptop;
3776 #endif /* OPTIMISE_SCROLL */
3778 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
3779 if (term->disptop < sbtop)
3780 term->disptop = sbtop;
3781 if (term->disptop > 0)
3784 #ifdef OPTIMISE_SCROLL
3785 shift = (term->disptop - olddisptop);
3786 if (shift < term->rows && shift > -term->rows)
3787 scroll_display(term, 0, term->rows - 1, shift);
3788 #endif /* OPTIMISE_SCROLL */
3792 static void clipme(Terminal *term, pos top, pos bottom, int rect, int desel)
3795 wchar_t *wbptr; /* where next char goes within workbuf */
3797 int wblen = 0; /* workbuf len */
3798 int buflen; /* amount of memory allocated to workbuf */
3800 buflen = 5120; /* Default size */
3801 workbuf = snewn(buflen, wchar_t);
3802 wbptr = workbuf; /* start filling here */
3803 old_top_x = top.x; /* needed for rect==1 */
3805 while (poslt(top, bottom)) {
3807 unsigned long *ldata = lineptr(top.y);
3811 * nlpos will point at the maximum position on this line we
3812 * should copy up to. So we start it at the end of the
3816 nlpos.x = term->cols;
3819 * ... move it backwards if there's unused space at the end
3820 * of the line (and also set `nl' if this is the case,
3821 * because in normal selection mode this means we need a
3822 * newline at the end)...
3824 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3825 while (((ldata[nlpos.x - 1] & 0xFF) == 0x20 ||
3826 (DIRECT_CHAR(ldata[nlpos.x - 1]) &&
3827 (ldata[nlpos.x - 1] & CHAR_MASK) == 0x20))
3828 && poslt(top, nlpos))
3830 if (poslt(nlpos, bottom))
3832 } else if (ldata[term->cols] & LATTR_WRAPPED2) {
3833 /* Ignore the last char on the line in a WRAPPED2 line. */
3838 * ... and then clip it to the terminal x coordinate if
3839 * we're doing rectangular selection. (In this case we
3840 * still did the above, so that copying e.g. the right-hand
3841 * column from a table doesn't fill with spaces on the
3845 if (nlpos.x > bottom.x)
3847 nl = (top.y < bottom.y);
3850 while (poslt(top, bottom) && poslt(top, nlpos)) {
3853 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
3855 wchar_t cbuf[16], *p;
3856 int uc = (ldata[top.x] & 0xFFFF);
3859 if (uc == UCSWIDE) {
3864 switch (uc & CSET_MASK) {
3866 if (!term->cfg.rawcnp) {
3867 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
3871 uc = term->ucsdata->unitab_line[uc & 0xFF];
3874 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
3877 switch (uc & CSET_MASK) {
3879 uc = term->ucsdata->unitab_font[uc & 0xFF];
3882 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
3886 set = (uc & CSET_MASK);
3887 c = (uc & CHAR_MASK);
3891 if (DIRECT_FONT(uc)) {
3892 if (c >= ' ' && c != 0x7F) {
3896 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
3898 buf[1] = (char) (0xFF & ldata[top.x + 1]);
3899 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
3903 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
3907 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
3914 for (p = cbuf; *p; p++) {
3915 /* Enough overhead for trailing NL and nul */
3916 if (wblen >= buflen - 16) {
3918 workbuf = sresize(workbuf, buflen, wchar_t);
3919 wbptr = workbuf + wblen;
3928 for (i = 0; i < sel_nl_sz; i++) {
3930 *wbptr++ = sel_nl[i];
3934 top.x = rect ? old_top_x : 0;
3936 #if SELECTION_NUL_TERMINATED
3940 write_clip(term->frontend, workbuf, wblen, desel); /* transfer to clipbd */
3941 if (buflen > 0) /* indicates we allocated this buffer */
3945 void term_copyall(Terminal *term)
3949 tree234 *screen = term->screen;
3950 top.y = -sblines(term);
3952 bottom.y = find_last_nonempty_line(term, screen);
3953 bottom.x = term->cols;
3954 clipme(term, top, bottom, 0, TRUE);
3958 * The wordness array is mainly for deciding the disposition of the
3959 * US-ASCII characters.
3961 static int wordtype(Terminal *term, int uc)
3964 int start, end, ctype;
3966 static const struct ucsword ucs_words[] = {
3972 0x037e, 0x037e, 1}, /* Greek question mark */
3974 0x0387, 0x0387, 1}, /* Greek ano teleia */
3976 0x055a, 0x055f, 1}, /* Armenian punctuation */
3978 0x0589, 0x0589, 1}, /* Armenian full stop */
3980 0x0700, 0x070d, 1}, /* Syriac punctuation */
3982 0x104a, 0x104f, 1}, /* Myanmar punctuation */
3984 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
3986 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
3988 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
3990 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
3992 0x1800, 0x180a, 1}, /* Mongolian punctuation */
3994 0x2000, 0x200a, 0}, /* Various spaces */
3996 0x2070, 0x207f, 2}, /* superscript */
3998 0x2080, 0x208f, 2}, /* subscript */
4000 0x200b, 0x27ff, 1}, /* punctuation and symbols */
4002 0x3000, 0x3000, 0}, /* ideographic space */
4004 0x3001, 0x3020, 1}, /* ideographic punctuation */
4006 0x303f, 0x309f, 3}, /* Hiragana */
4008 0x30a0, 0x30ff, 3}, /* Katakana */
4010 0x3300, 0x9fff, 3}, /* CJK Ideographs */
4012 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
4014 0xf900, 0xfaff, 3}, /* CJK Ideographs */
4016 0xfe30, 0xfe6b, 1}, /* punctuation forms */
4018 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
4020 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
4022 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
4024 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
4026 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
4030 const struct ucsword *wptr;
4032 uc &= (CSET_MASK | CHAR_MASK);
4034 switch (uc & CSET_MASK) {
4036 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
4039 uc = term->ucsdata->unitab_line[uc & 0xFF];
4042 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
4045 switch (uc & CSET_MASK) {
4047 uc = term->ucsdata->unitab_font[uc & 0xFF];
4050 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
4054 /* For DBCS font's I can't do anything usefull. Even this will sometimes
4055 * fail as there's such a thing as a double width space. :-(
4057 if (term->ucsdata->dbcs_screenfont &&
4058 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
4062 return term->wordness[uc];
4064 for (wptr = ucs_words; wptr->start; wptr++) {
4065 if (uc >= wptr->start && uc <= wptr->end)
4073 * Spread the selection outwards according to the selection mode.
4075 static pos sel_spread_half(Terminal *term, pos p, int dir)
4077 unsigned long *ldata;
4079 int topy = -sblines(term);
4081 ldata = lineptr(p.y);
4083 switch (term->selmode) {
4086 * In this mode, every character is a separate unit, except
4087 * for runs of spaces at the end of a non-wrapping line.
4089 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
4090 unsigned long *q = ldata + term->cols;
4091 while (q > ldata && (q[-1] & CHAR_MASK) == 0x20)
4093 if (q == ldata + term->cols)
4095 if (p.x >= q - ldata)
4096 p.x = (dir == -1 ? q - ldata : term->cols - 1);
4101 * In this mode, the units are maximal runs of characters
4102 * whose `wordness' has the same value.
4104 wvalue = wordtype(term, UCSGET(ldata, p.x));
4107 int maxcols = (ldata[term->cols] & LATTR_WRAPPED2 ?
4108 term->cols-1 : term->cols);
4109 if (p.x < maxcols-1) {
4110 if (wordtype(term, UCSGET(ldata, p.x + 1)) == wvalue)
4115 if (ldata[term->cols] & LATTR_WRAPPED) {
4116 unsigned long *ldata2;
4117 ldata2 = lineptr(p.y+1);
4118 if (wordtype(term, UCSGET(ldata2, 0)) == wvalue) {
4131 if (wordtype(term, UCSGET(ldata, p.x - 1)) == wvalue)
4136 unsigned long *ldata2;
4140 ldata2 = lineptr(p.y-1);
4141 maxcols = (ldata2[term->cols] & LATTR_WRAPPED2 ?
4142 term->cols-1 : term->cols);
4143 if (ldata2[term->cols] & LATTR_WRAPPED) {
4144 if (wordtype(term, UCSGET(ldata2, maxcols-1))
4159 * In this mode, every line is a unit.
4161 p.x = (dir == -1 ? 0 : term->cols - 1);
4167 static void sel_spread(Terminal *term)
4169 if (term->seltype == LEXICOGRAPHIC) {
4170 term->selstart = sel_spread_half(term, term->selstart, -1);
4171 decpos(term->selend);
4172 term->selend = sel_spread_half(term, term->selend, +1);
4173 incpos(term->selend);
4177 void term_do_paste(Terminal *term)
4182 get_clip(term->frontend, &data, &len);
4183 if (data && len > 0) {
4186 term_seen_key_event(term); /* pasted data counts */
4188 if (term->paste_buffer)
4189 sfree(term->paste_buffer);
4190 term->paste_pos = term->paste_hold = term->paste_len = 0;
4191 term->paste_buffer = snewn(len, wchar_t);
4194 while (p < data + len) {
4195 while (p < data + len &&
4196 !(p <= data + len - sel_nl_sz &&
4197 !memcmp(p, sel_nl, sizeof(sel_nl))))
4202 for (i = 0; i < p - q; i++) {
4203 term->paste_buffer[term->paste_len++] = q[i];
4207 if (p <= data + len - sel_nl_sz &&
4208 !memcmp(p, sel_nl, sizeof(sel_nl))) {
4209 term->paste_buffer[term->paste_len++] = '\015';
4215 /* Assume a small paste will be OK in one go. */
4216 if (term->paste_len < 256) {
4218 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
4219 if (term->paste_buffer)
4220 sfree(term->paste_buffer);
4221 term->paste_buffer = 0;
4222 term->paste_pos = term->paste_hold = term->paste_len = 0;
4225 get_clip(term->frontend, NULL, NULL);
4228 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
4229 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
4232 unsigned long *ldata;
4233 int raw_mouse = (term->xterm_mouse &&
4234 !term->cfg.no_mouse_rep &&
4235 !(term->cfg.mouse_override && shift));
4236 int default_seltype;
4240 if (a == MA_DRAG && !raw_mouse)
4241 term_scroll(term, 0, -1);
4243 if (y >= term->rows) {
4245 if (a == MA_DRAG && !raw_mouse)
4246 term_scroll(term, 0, +1);
4255 if (x >= term->cols)
4258 selpoint.y = y + term->disptop;
4260 ldata = lineptr(selpoint.y);
4261 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM)
4265 int encstate = 0, r, c;
4272 encstate = 0x20; /* left button down */
4283 case MBT_WHEEL_DOWN:
4286 default: break; /* placate gcc warning about enum use */
4290 if (term->xterm_mouse == 1)
4296 term->mouse_is_down = 0;
4299 if (term->mouse_is_down == braw)
4301 term->mouse_is_down = braw;
4303 default: break; /* placate gcc warning about enum use */
4312 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
4313 ldisc_send(term->ldisc, abuf, 6, 0);
4319 * Set the selection type (rectangular or normal) at the start
4320 * of a selection attempt, from the state of Alt.
4322 if (!alt ^ !term->cfg.rect_select)
4323 default_seltype = RECTANGULAR;
4325 default_seltype = LEXICOGRAPHIC;
4327 if (term->selstate == NO_SELECTION) {
4328 term->seltype = default_seltype;
4331 if (bcooked == MBT_SELECT && a == MA_CLICK) {
4333 term->selstate = ABOUT_TO;
4334 term->seltype = default_seltype;
4335 term->selanchor = selpoint;
4336 term->selmode = SM_CHAR;
4337 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
4339 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
4340 term->selstate = DRAGGING;
4341 term->selstart = term->selanchor = selpoint;
4342 term->selend = term->selstart;
4343 incpos(term->selend);
4345 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
4346 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
4347 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
4349 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
4350 term->selstate == SELECTED) {
4351 if (term->seltype == LEXICOGRAPHIC) {
4353 * For normal selection, we extend by moving
4354 * whichever end of the current selection is closer
4357 if (posdiff(selpoint, term->selstart) <
4358 posdiff(term->selend, term->selstart) / 2) {
4359 term->selanchor = term->selend;
4360 decpos(term->selanchor);
4362 term->selanchor = term->selstart;
4366 * For rectangular selection, we have a choice of
4367 * _four_ places to put selanchor and selpoint: the
4368 * four corners of the selection.
4370 if (2*selpoint.x < term->selstart.x + term->selend.x)
4371 term->selanchor.x = term->selend.x-1;
4373 term->selanchor.x = term->selstart.x;
4375 if (2*selpoint.y < term->selstart.y + term->selend.y)
4376 term->selanchor.y = term->selend.y;
4378 term->selanchor.y = term->selstart.y;
4380 term->selstate = DRAGGING;
4382 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
4383 term->selanchor = selpoint;
4384 term->selstate = DRAGGING;
4385 if (term->seltype == LEXICOGRAPHIC) {
4387 * For normal selection, we set (selstart,selend) to
4388 * (selpoint,selanchor) in some order.
4390 if (poslt(selpoint, term->selanchor)) {
4391 term->selstart = selpoint;
4392 term->selend = term->selanchor;
4393 incpos(term->selend);
4395 term->selstart = term->selanchor;
4396 term->selend = selpoint;
4397 incpos(term->selend);
4401 * For rectangular selection, we may need to
4402 * interchange x and y coordinates (if the user has
4403 * dragged in the -x and +y directions, or vice versa).
4405 term->selstart.x = min(term->selanchor.x, selpoint.x);
4406 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
4407 term->selstart.y = min(term->selanchor.y, selpoint.y);
4408 term->selend.y = max(term->selanchor.y, selpoint.y);
4411 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
4413 if (term->selstate == DRAGGING) {
4415 * We've completed a selection. We now transfer the
4416 * data to the clipboard.
4418 clipme(term, term->selstart, term->selend,
4419 (term->seltype == RECTANGULAR), FALSE);
4420 term->selstate = SELECTED;
4422 term->selstate = NO_SELECTION;
4423 } else if (bcooked == MBT_PASTE
4425 #if MULTICLICK_ONLY_EVENT
4426 || a == MA_2CLK || a == MA_3CLK
4429 request_paste(term->frontend);
4435 void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
4436 unsigned int modifiers, unsigned int flags)
4440 int prependesc = FALSE;
4444 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
4445 for (i = 0; i < tlen; i++)
4446 fprintf(stderr, " %04x", (unsigned)text[i]);
4447 fprintf(stderr, "\n");
4451 if ((flags & PKF_REPEAT) && term->repeat_off)
4454 /* Currently, Meta always just prefixes everything with ESC. */
4455 if (modifiers & PKM_META)
4457 modifiers &= ~PKM_META;
4460 * Alt is only used for Alt+keypad, which isn't supported yet, so
4463 modifiers &= ~PKM_ALT;
4465 /* Standard local function keys */
4466 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
4468 if (keysym == PK_PAGEUP)
4469 /* scroll up one page */;
4470 if (keysym == PK_PAGEDOWN)
4471 /* scroll down on page */;
4472 if (keysym == PK_INSERT)
4473 term_do_paste(term);
4476 if (keysym == PK_PAGEUP)
4477 /* scroll up one line */;
4478 if (keysym == PK_PAGEDOWN)
4479 /* scroll down one line */;
4480 /* Control-Numlock for app-keypad mode switch */
4481 if (keysym == PK_PF1)
4482 term->app_keypad_keys ^= 1;
4486 if (modifiers & PKM_ALT) {
4487 /* Alt+F4 (close) */
4488 /* Alt+Return (full screen) */
4489 /* Alt+Space (system menu) */
4492 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
4493 text[0] >= 0x20 && text[0] <= 0x7e) {
4494 /* ASCII chars + Control */
4495 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
4496 (text[0] >= 0x61 && text[0] <= 0x7a))
4500 * Control-2 should return ^@ (0x00), Control-6 should return
4501 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
4502 * the DOS keyboard handling did it, and we have nothing better
4503 * to do with the key combo in question, we'll also map
4504 * Control-Backquote to ^\ (0x1C).
4507 case ' ': text[0] = 0x00; break;
4508 case '-': text[0] = 0x1f; break;
4509 case '/': text[0] = 0x1f; break;
4510 case '2': text[0] = 0x00; break;
4511 case '3': text[0] = 0x1b; break;
4512 case '4': text[0] = 0x1c; break;
4513 case '5': text[0] = 0x1d; break;
4514 case '6': text[0] = 0x1e; break;
4515 case '7': text[0] = 0x1f; break;
4516 case '8': text[0] = 0x7f; break;
4517 case '`': text[0] = 0x1c; break;
4522 /* Nethack keypad */
4523 if (term->cfg.nethack_keypad) {
4526 case PK_KP1: c = 'b'; break;
4527 case PK_KP2: c = 'j'; break;
4528 case PK_KP3: c = 'n'; break;
4529 case PK_KP4: c = 'h'; break;
4530 case PK_KP5: c = '.'; break;
4531 case PK_KP6: c = 'l'; break;
4532 case PK_KP7: c = 'y'; break;
4533 case PK_KP8: c = 'k'; break;
4534 case PK_KP9: c = 'u'; break;
4535 default: break; /* else gcc warns `enum value not used' */
4539 if (modifiers & PKM_CONTROL)
4541 else if (modifiers & PKM_SHIFT)
4549 /* Numeric Keypad */
4550 if (PK_ISKEYPAD(keysym)) {
4554 * In VT400 mode, PFn always emits an escape sequence. In
4555 * Linux and tilde modes, this only happens in app keypad mode.
4557 if (term->cfg.funky_type == FUNKY_VT400 ||
4558 ((term->cfg.funky_type == FUNKY_LINUX ||
4559 term->cfg.funky_type == FUNKY_TILDE) &&
4560 term->app_keypad_keys && !term->cfg.no_applic_k)) {
4562 case PK_PF1: xkey = 'P'; break;
4563 case PK_PF2: xkey = 'Q'; break;
4564 case PK_PF3: xkey = 'R'; break;
4565 case PK_PF4: xkey = 'S'; break;
4566 default: break; /* else gcc warns `enum value not used' */
4569 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
4571 case PK_KP0: xkey = 'p'; break;
4572 case PK_KP1: xkey = 'q'; break;
4573 case PK_KP2: xkey = 'r'; break;
4574 case PK_KP3: xkey = 's'; break;
4575 case PK_KP4: xkey = 't'; break;
4576 case PK_KP5: xkey = 'u'; break;
4577 case PK_KP6: xkey = 'v'; break;
4578 case PK_KP7: xkey = 'w'; break;
4579 case PK_KP8: xkey = 'x'; break;
4580 case PK_KP9: xkey = 'y'; break;
4581 case PK_KPDECIMAL: xkey = 'n'; break;
4582 case PK_KPENTER: xkey = 'M'; break;
4583 default: break; /* else gcc warns `enum value not used' */
4585 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
4587 * xterm can't see the layout of the keypad, so it has
4588 * to rely on the X keysyms returned by the keys.
4589 * Hence, we look at the strings here, not the PuTTY
4590 * keysyms (which describe the layout).
4594 if (modifiers & PKM_SHIFT)
4599 case '/': xkey = 'o'; break;
4600 case '*': xkey = 'j'; break;
4601 case '-': xkey = 'm'; break;
4605 * In all other modes, we try to retain the layout of
4606 * the DEC keypad in application mode.
4610 /* This key covers the '-' and ',' keys on a VT220 */
4611 if (modifiers & PKM_SHIFT)
4612 xkey = 'm'; /* VT220 '-' */
4614 xkey = 'l'; /* VT220 ',' */
4616 case PK_KPMINUS: xkey = 'm'; break;
4617 case PK_KPCOMMA: xkey = 'l'; break;
4618 default: break; /* else gcc warns `enum value not used' */
4623 if (term->vt52_mode) {
4624 if (xkey >= 'P' && xkey <= 'S')
4625 p += sprintf((char *) p, "\x1B%c", xkey);
4627 p += sprintf((char *) p, "\x1B?%c", xkey);
4629 p += sprintf((char *) p, "\x1BO%c", xkey);
4632 /* Not in application mode -- treat the number pad as arrow keys? */
4633 if ((flags & PKF_NUMLOCK) == 0) {
4635 case PK_KP0: keysym = PK_INSERT; break;
4636 case PK_KP1: keysym = PK_END; break;
4637 case PK_KP2: keysym = PK_DOWN; break;
4638 case PK_KP3: keysym = PK_PAGEDOWN; break;
4639 case PK_KP4: keysym = PK_LEFT; break;
4640 case PK_KP5: keysym = PK_REST; break;
4641 case PK_KP6: keysym = PK_RIGHT; break;
4642 case PK_KP7: keysym = PK_HOME; break;
4643 case PK_KP8: keysym = PK_UP; break;
4644 case PK_KP9: keysym = PK_PAGEUP; break;
4645 default: break; /* else gcc warns `enum value not used' */
4650 /* Miscellaneous keys */
4657 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
4658 else if (modifiers == PKM_SHIFT)
4659 /* We do the opposite of what is configured */
4660 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
4666 else if (modifiers == PKM_SHIFT)
4667 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
4670 /* XXX window.c has ctrl+shift+space sending 0xa0 */
4672 if (modifiers == PKM_CONTROL)
4677 case PK_KPENTER: /* Odd keypad modes handled above */
4678 if (modifiers == 0) {
4680 if (term->cr_lf_return)
4684 default: break; /* else gcc warns `enum value not used' */
4687 /* SCO function keys and editing keys */
4688 if (term->cfg.funky_type == FUNKY_SCO) {
4689 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
4690 static char const codes[] =
4691 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
4692 int index = keysym - PK_F1;
4694 if (modifiers & PKM_SHIFT) index += 12;
4695 if (modifiers & PKM_CONTROL) index += 24;
4696 p += sprintf((char *) p, "\x1B[%c", codes[index]);
4699 if (PK_ISEDITING(keysym)) {
4703 case PK_DELETE: *p++ = 0x7f; goto done;
4704 case PK_HOME: xkey = 'H'; break;
4705 case PK_INSERT: xkey = 'L'; break;
4706 case PK_END: xkey = 'F'; break;
4707 case PK_PAGEUP: xkey = 'I'; break;
4708 case PK_PAGEDOWN: xkey = 'G'; break;
4709 default: break; /* else gcc warns `enum value not used' */
4711 p += sprintf((char *) p, "\x1B[%c", xkey);
4715 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
4718 if (term->cfg.funky_type == FUNKY_XTERM) {
4719 /* Xterm shuffles these keys, apparently. */
4721 case PK_HOME: keysym = PK_INSERT; break;
4722 case PK_INSERT: keysym = PK_HOME; break;
4723 case PK_DELETE: keysym = PK_END; break;
4724 case PK_END: keysym = PK_PAGEUP; break;
4725 case PK_PAGEUP: keysym = PK_DELETE; break;
4726 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
4727 default: break; /* else gcc warns `enum value not used' */
4732 if (term->cfg.rxvt_homeend &&
4733 (keysym == PK_HOME || keysym == PK_END)) {
4734 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
4738 if (term->vt52_mode) {
4742 * A real VT52 doesn't have these, and a VT220 doesn't
4743 * send anything for them in VT52 mode.
4746 case PK_HOME: xkey = 'H'; break;
4747 case PK_INSERT: xkey = 'L'; break;
4748 case PK_DELETE: xkey = 'M'; break;
4749 case PK_END: xkey = 'E'; break;
4750 case PK_PAGEUP: xkey = 'I'; break;
4751 case PK_PAGEDOWN: xkey = 'G'; break;
4752 default: xkey=0; break; /* else gcc warns `enum value not used'*/
4754 p += sprintf((char *) p, "\x1B%c", xkey);
4759 case PK_HOME: code = 1; break;
4760 case PK_INSERT: code = 2; break;
4761 case PK_DELETE: code = 3; break;
4762 case PK_END: code = 4; break;
4763 case PK_PAGEUP: code = 5; break;
4764 case PK_PAGEDOWN: code = 6; break;
4765 default: code = 0; break; /* else gcc warns `enum value not used' */
4767 p += sprintf((char *) p, "\x1B[%d~", code);
4771 if (PK_ISFKEY(keysym)) {
4772 /* Map Shift+F1-F10 to F11-F20 */
4773 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
4775 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
4777 /* XXX This overrides the XTERM/VT52 mode below */
4779 if (keysym >= PK_F6) offt++;
4780 if (keysym >= PK_F12) offt++;
4781 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
4782 'P' + keysym - PK_F1 - offt);
4785 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
4786 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
4789 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
4790 if (term->vt52_mode)
4791 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
4793 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
4796 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
4800 if (PK_ISCURSOR(keysym)) {
4804 case PK_UP: xkey = 'A'; break;
4805 case PK_DOWN: xkey = 'B'; break;
4806 case PK_RIGHT: xkey = 'C'; break;
4807 case PK_LEFT: xkey = 'D'; break;
4808 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
4809 default: xkey = 0; break; /* else gcc warns `enum value not used' */
4811 if (term->vt52_mode)
4812 p += sprintf((char *) p, "\x1B%c", xkey);
4814 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
4816 /* Useful mapping of Ctrl-arrows */
4817 if (modifiers == PKM_CONTROL)
4821 p += sprintf((char *) p, "\x1BO%c", xkey);
4823 p += sprintf((char *) p, "\x1B[%c", xkey);
4829 if (p > output || tlen > 0) {
4831 * Interrupt an ongoing paste. I'm not sure
4832 * this is sensible, but for the moment it's
4833 * preferable to having to faff about buffering
4839 * We need not bother about stdin backlogs
4840 * here, because in GUI PuTTY we can't do
4841 * anything about it anyway; there's no means
4842 * of asking Windows to hold off on KEYDOWN
4843 * messages. We _have_ to buffer everything
4846 term_seen_key_event(term);
4850 fprintf(stderr, "sending ESC\n");
4852 ldisc_send(term->ldisc, "\x1b", 1, 1);
4857 fprintf(stderr, "sending %d bytes:", p - output);
4858 for (i = 0; i < p - output; i++)
4859 fprintf(stderr, " %02x", output[i]);
4860 fprintf(stderr, "\n");
4862 ldisc_send(term->ldisc, output, p - output, 1);
4863 } else if (tlen > 0) {
4865 fprintf(stderr, "sending %d unichars:", tlen);
4866 for (i = 0; i < tlen; i++)
4867 fprintf(stderr, " %04x", (unsigned) text[i]);
4868 fprintf(stderr, "\n");
4870 luni_send(term->ldisc, text, tlen, 1);
4875 void term_nopaste(Terminal *term)
4877 if (term->paste_len == 0)
4879 sfree(term->paste_buffer);
4880 term->paste_buffer = NULL;
4881 term->paste_len = 0;
4884 int term_paste_pending(Terminal *term)
4886 return term->paste_len != 0;
4889 void term_paste(Terminal *term)
4891 long now, paste_diff;
4893 if (term->paste_len == 0)
4896 /* Don't wait forever to paste */
4897 if (term->paste_hold) {
4898 now = GETTICKCOUNT();
4899 paste_diff = now - term->last_paste;
4900 if (paste_diff >= 0 && paste_diff < 450)
4903 term->paste_hold = 0;
4905 while (term->paste_pos < term->paste_len) {
4907 while (n + term->paste_pos < term->paste_len) {
4908 if (term->paste_buffer[term->paste_pos + n++] == '\015')
4912 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
4913 term->paste_pos += n;
4915 if (term->paste_pos < term->paste_len) {
4916 term->paste_hold = 1;
4920 sfree(term->paste_buffer);
4921 term->paste_buffer = NULL;
4922 term->paste_len = 0;
4925 static void deselect(Terminal *term)
4927 term->selstate = NO_SELECTION;
4928 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
4931 void term_deselect(Terminal *term)
4937 int term_ldisc(Terminal *term, int option)
4939 if (option == LD_ECHO)
4940 return term->term_echoing;
4941 if (option == LD_EDIT)
4942 return term->term_editing;
4946 int term_data(Terminal *term, int is_stderr, const char *data, int len)
4948 bufchain_add(&term->inbuf, data, len);
4950 if (!term->in_term_out) {
4951 term->in_term_out = TRUE;
4952 term_blink(term, 1);
4954 term->in_term_out = FALSE;
4958 * term_out() always completely empties inbuf. Therefore,
4959 * there's no reason at all to return anything other than zero
4960 * from this function, because there _can't_ be a question of
4961 * the remote side needing to wait until term_out() has cleared
4964 * This is a slightly suboptimal way to deal with SSH2 - in
4965 * principle, the window mechanism would allow us to continue
4966 * to accept data on forwarded ports and X connections even
4967 * while the terminal processing was going slowly - but we
4968 * can't do the 100% right thing without moving the terminal
4969 * processing into a separate thread, and that might hurt
4970 * portability. So we manage stdout buffering the old SSH1 way:
4971 * if the terminal processing goes slowly, the whole SSH
4972 * connection stops accepting data until it's ready.
4974 * In practice, I can't imagine this causing serious trouble.
4979 void term_provide_logctx(Terminal *term, void *logctx)
4981 term->logctx = logctx;