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 #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
60 const wchar_t sel_nl[] = SEL_NL;
63 * Fetch the character at a particular position in a line array,
64 * for purposes of `wordtype'. The reason this isn't just a simple
65 * array reference is that if the character we find is UCSWIDE,
66 * then we must look one space further to the left.
68 #define UCSGET(a, x) \
69 ( (x)>0 && ((a)[(x)] & (CHAR_MASK | CSET_MASK)) == UCSWIDE ? \
70 (a)[(x)-1] : (a)[(x)] )
73 * Internal prototypes.
75 static unsigned long *resizeline(unsigned long *, int);
76 static unsigned long *lineptr(Terminal *, int, int);
77 static void do_paint(Terminal *, Context, int);
78 static void erase_lots(Terminal *, int, int, int);
79 static void swap_screen(Terminal *, int, int, int);
80 static void update_sbar(Terminal *);
81 static void deselect(Terminal *);
82 static void term_print_finish(Terminal *);
83 #ifdef OPTIMISE_SCROLL
84 static void scroll_display(Terminal *, int, int, int);
85 #endif /* OPTIMISE_SCROLL */
88 * Resize a line to make it `cols' columns wide.
90 static unsigned long *resizeline(unsigned long *line, int cols)
93 unsigned long lineattrs;
95 if (line[0] != (unsigned long)cols) {
97 * This line is the wrong length, which probably means it
98 * hasn't been accessed since a resize. Resize it now.
101 lineattrs = line[oldlen + 1];
102 line = sresize(line, 2 + cols, TTYPE);
104 for (i = oldlen; i < cols; i++)
105 line[i + 1] = ERASE_CHAR;
106 line[cols + 1] = lineattrs & LATTR_MODE;
113 * Get the number of lines in the scrollback.
115 static int sblines(Terminal *term)
117 int sblines = count234(term->scrollback);
118 if (term->cfg.erase_to_scrollback &&
119 term->alt_which && term->alt_screen) {
120 sblines += term->alt_sblines;
126 * Retrieve a line of the screen or of the scrollback, according to
127 * whether the y coordinate is non-negative or negative
130 static unsigned long *lineptr(Terminal *term, int y, int lineno)
132 unsigned long *line, *newline;
137 whichtree = term->screen;
141 if (term->cfg.erase_to_scrollback &&
142 term->alt_which && term->alt_screen) {
143 altlines = term->alt_sblines;
146 whichtree = term->scrollback;
147 treeindex = y + altlines + count234(term->scrollback);
149 whichtree = term->alt_screen;
150 treeindex = y + term->alt_sblines;
151 /* treeindex = y + count234(term->alt_screen); */
154 line = index234(whichtree, treeindex);
156 /* We assume that we don't screw up and retrieve something out of range. */
157 assert(line != NULL);
159 newline = resizeline(line, term->cols);
160 if (newline != line) {
161 delpos234(whichtree, treeindex);
162 addpos234(whichtree, newline, treeindex);
169 #define lineptr(x) lineptr(term,x,__LINE__)
172 * Set up power-on settings for the terminal.
174 static void power_on(Terminal *term)
176 term->curs.x = term->curs.y = 0;
177 term->alt_x = term->alt_y = 0;
178 term->savecurs.x = term->savecurs.y = 0;
179 term->alt_t = term->marg_t = 0;
180 if (term->rows != -1)
181 term->alt_b = term->marg_b = term->rows - 1;
183 term->alt_b = term->marg_b = 0;
184 if (term->cols != -1) {
186 for (i = 0; i < term->cols; i++)
187 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
189 term->alt_om = term->dec_om = term->cfg.dec_om;
190 term->alt_ins = term->insert = FALSE;
191 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
192 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
193 term->alt_cset = term->cset = term->save_cset = 0;
194 term->alt_utf = term->utf = term->save_utf = 0;
196 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
197 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = ATTR_ASCII;
199 term->in_vbell = FALSE;
201 term->big_cursor = 0;
202 term->save_attr = term->curr_attr = ATTR_DEFAULT;
203 term->term_editing = term->term_echoing = FALSE;
204 term->app_cursor_keys = term->cfg.app_cursor;
205 term->app_keypad_keys = term->cfg.app_keypad;
206 term->use_bce = term->cfg.bce;
207 term->blink_is_real = term->cfg.blinktext;
208 term->erase_char = ERASE_CHAR;
210 term_print_finish(term);
213 for (i = 0; i < 256; i++)
214 term->wordness[i] = term->cfg.wordness[i];
217 swap_screen(term, 1, FALSE, FALSE);
218 erase_lots(term, FALSE, TRUE, TRUE);
219 swap_screen(term, 0, FALSE, FALSE);
220 erase_lots(term, FALSE, TRUE, TRUE);
225 * Force a screen update.
227 void term_update(Terminal *term)
230 ctx = get_ctx(term->frontend);
232 int need_sbar_update = term->seen_disp_event;
233 if (term->seen_disp_event && term->cfg.scroll_on_disp) {
234 term->disptop = 0; /* return to main screen */
235 term->seen_disp_event = 0;
236 need_sbar_update = TRUE;
238 if (need_sbar_update)
240 do_paint(term, ctx, TRUE);
241 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
247 * Called from front end when a keypress occurs, to trigger
248 * anything magical that needs to happen in that situation.
250 void term_seen_key_event(Terminal *term)
253 * On any keypress, clear the bell overload mechanism
254 * completely, on the grounds that large numbers of
255 * beeps coming from deliberate key action are likely
256 * to be intended (e.g. beeps from filename completion
257 * blocking repeatedly).
259 term->beep_overloaded = FALSE;
260 while (term->beephead) {
261 struct beeptime *tmp = term->beephead;
262 term->beephead = tmp->next;
265 term->beeptail = NULL;
269 * Reset the scrollback on keypress, if we're doing that.
271 if (term->cfg.scroll_on_key) {
272 term->disptop = 0; /* return to main screen */
273 term->seen_disp_event = 1;
278 * Same as power_on(), but an external function.
280 void term_pwron(Terminal *term)
283 if (term->ldisc) /* cause ldisc to notice changes */
284 ldisc_send(term->ldisc, NULL, 0, 0);
292 * When the user reconfigures us, we need to check the forbidden-
293 * alternate-screen config option, disable raw mouse mode if the
294 * user has disabled mouse reporting, and abandon a print job if
295 * the user has disabled printing.
297 void term_reconfig(Terminal *term, Config *cfg)
300 * Before adopting the new config, check all those terminal
301 * settings which control power-on defaults; and if they've
302 * changed, we will modify the current state as well as the
303 * default one. The full list is: Auto wrap mode, DEC Origin
304 * Mode, BCE, blinking text, character classes.
306 int reset_wrap, reset_decom, reset_bce, reset_blink, reset_charclass;
309 reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode);
310 reset_decom = (term->cfg.dec_om != cfg->dec_om);
311 reset_bce = (term->cfg.bce != cfg->bce);
312 reset_blink = (term->cfg.blinktext != cfg->blinktext);
314 for (i = 0; i < lenof(term->cfg.wordness); i++)
315 if (term->cfg.wordness[i] != cfg->wordness[i])
318 term->cfg = *cfg; /* STRUCTURE COPY */
321 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
323 term->alt_om = term->dec_om = term->cfg.dec_om;
325 term->use_bce = term->cfg.bce;
327 term->blink_is_real = term->cfg.blinktext;
329 for (i = 0; i < 256; i++)
330 term->wordness[i] = term->cfg.wordness[i];
332 if (term->cfg.no_alt_screen)
333 swap_screen(term, 0, FALSE, FALSE);
334 if (term->cfg.no_mouse_rep) {
335 term->xterm_mouse = 0;
336 set_raw_mouse_mode(term->frontend, 0);
338 if (term->cfg.no_remote_charset) {
339 term->cset_attr[0] = term->cset_attr[1] = ATTR_ASCII;
340 term->sco_acs = term->alt_sco_acs = 0;
343 if (!*term->cfg.printer) {
344 term_print_finish(term);
349 * Clear the scrollback.
351 void term_clrsb(Terminal *term)
355 while ((line = delpos234(term->scrollback, 0)) != NULL) {
358 term->tempsblines = 0;
359 term->alt_sblines = 0;
364 * Initialise the terminal.
366 Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
372 * Allocate a new Terminal structure and initialise the fields
375 term = snew(Terminal);
376 term->frontend = frontend;
377 term->ucsdata = ucsdata;
378 term->cfg = *mycfg; /* STRUCTURE COPY */
380 term->compatibility_level = TM_PUTTY;
381 strcpy(term->id_string, "\033[?6c");
382 term->last_blink = term->last_tblink = 0;
383 term->paste_buffer = NULL;
385 term->last_paste = 0;
386 bufchain_init(&term->inbuf);
387 bufchain_init(&term->printer_buf);
388 term->printing = term->only_printing = FALSE;
389 term->print_job = NULL;
390 term->vt52_mode = FALSE;
391 term->cr_lf_return = FALSE;
392 term->seen_disp_event = FALSE;
393 term->xterm_mouse = term->mouse_is_down = FALSE;
394 term->reset_132 = FALSE;
395 term->blinker = term->tblinker = 0;
397 term->repeat_off = FALSE;
398 term->termstate = TOPLEVEL;
399 term->selstate = NO_SELECTION;
402 term->screen = term->alt_screen = term->scrollback = NULL;
403 term->tempsblines = 0;
404 term->alt_sblines = 0;
406 term->disptext = term->dispcurs = NULL;
409 term->rows = term->cols = -1;
411 term->beephead = term->beeptail = NULL;
412 #ifdef OPTIMISE_SCROLL
413 term->scrollhead = term->scrolltail = NULL;
414 #endif /* OPTIMISE_SCROLL */
416 term->lastbeep = FALSE;
417 term->beep_overloaded = FALSE;
418 term->attr_mask = 0xffffffff;
419 term->resize_fn = NULL;
420 term->resize_ctx = NULL;
425 void term_free(Terminal *term)
428 struct beeptime *beep;
430 while ((line = delpos234(term->scrollback, 0)) != NULL)
432 freetree234(term->scrollback);
433 while ((line = delpos234(term->screen, 0)) != NULL)
435 freetree234(term->screen);
436 while ((line = delpos234(term->alt_screen, 0)) != NULL)
438 freetree234(term->alt_screen);
439 sfree(term->disptext);
440 while (term->beephead) {
441 beep = term->beephead;
442 term->beephead = beep->next;
445 bufchain_clear(&term->inbuf);
447 printer_finish_job(term->print_job);
448 bufchain_clear(&term->printer_buf);
449 sfree(term->paste_buffer);
454 * Set up the terminal for a given size.
456 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
459 unsigned long *newdisp, *line;
462 int save_alt_which = term->alt_which;
464 if (newrows == term->rows && newcols == term->cols &&
465 newsavelines == term->savelines)
466 return; /* nothing to do */
469 swap_screen(term, 0, FALSE, FALSE);
471 term->alt_t = term->marg_t = 0;
472 term->alt_b = term->marg_b = newrows - 1;
474 if (term->rows == -1) {
475 term->scrollback = newtree234(NULL);
476 term->screen = newtree234(NULL);
477 term->tempsblines = 0;
482 * Resize the screen and scrollback. We only need to shift
483 * lines around within our data structures, because lineptr()
484 * will take care of resizing each individual line if
487 * - If the new screen is longer, we shunt lines in from temporary
488 * scrollback if possible, otherwise we add new blank lines at
491 * - If the new screen is shorter, we remove any blank lines at
492 * the bottom if possible, otherwise shunt lines above the cursor
493 * to scrollback if possible, otherwise delete lines below the
496 * - Then, if the new scrollback length is less than the
497 * amount of scrollback we actually have, we must throw some
500 sblen = count234(term->scrollback);
501 /* Do this loop to expand the screen if newrows > rows */
502 assert(term->rows == count234(term->screen));
503 while (term->rows < newrows) {
504 if (term->tempsblines > 0) {
505 /* Insert a line from the scrollback at the top of the screen. */
506 assert(sblen >= term->tempsblines);
507 line = delpos234(term->scrollback, --sblen);
508 term->tempsblines -= 1;
509 addpos234(term->screen, line, 0);
511 term->savecurs.y += 1;
513 /* Add a new blank line at the bottom of the screen. */
514 line = snewn(newcols + 2, TTYPE);
516 for (j = 0; j < newcols; j++)
517 line[j + 1] = ERASE_CHAR;
518 line[newcols + 1] = LATTR_NORM;
519 addpos234(term->screen, line, count234(term->screen));
523 /* Do this loop to shrink the screen if newrows < rows */
524 while (term->rows > newrows) {
525 if (term->curs.y < term->rows - 1) {
526 /* delete bottom row, unless it contains the cursor */
527 sfree(delpos234(term->screen, term->rows - 1));
529 /* push top row to scrollback */
530 line = delpos234(term->screen, 0);
531 addpos234(term->scrollback, line, sblen++);
532 term->tempsblines += 1;
534 term->savecurs.y -= 1;
538 assert(term->rows == newrows);
539 assert(count234(term->screen) == newrows);
541 /* Delete any excess lines from the scrollback. */
542 while (sblen > newsavelines) {
543 line = delpos234(term->scrollback, 0);
547 if (sblen < term->tempsblines)
548 term->tempsblines = sblen;
549 assert(count234(term->scrollback) <= newsavelines);
550 assert(count234(term->scrollback) >= term->tempsblines);
553 /* Make a new displayed text buffer. */
554 newdisp = snewn(newrows * (newcols + 1), TTYPE);
555 for (i = 0; i < newrows * (newcols + 1); i++)
556 newdisp[i] = ATTR_INVALID;
557 sfree(term->disptext);
558 term->disptext = newdisp;
559 term->dispcurs = NULL;
561 /* Make a new alternate screen. */
562 newalt = newtree234(NULL);
563 for (i = 0; i < newrows; i++) {
564 line = snewn(newcols + 2, TTYPE);
566 for (j = 0; j < newcols; j++)
567 line[j + 1] = term->erase_char;
568 line[newcols + 1] = LATTR_NORM;
569 addpos234(newalt, line, i);
571 if (term->alt_screen) {
572 while (NULL != (line = delpos234(term->alt_screen, 0)))
574 freetree234(term->alt_screen);
576 term->alt_screen = newalt;
577 term->alt_sblines = 0;
579 term->tabs = sresize(term->tabs, newcols, unsigned char);
582 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
583 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
586 /* Check that the cursor positions are still valid. */
587 if (term->savecurs.y < 0)
588 term->savecurs.y = 0;
589 if (term->savecurs.y >= newrows)
590 term->savecurs.y = newrows - 1;
591 if (term->curs.y < 0)
593 if (term->curs.y >= newrows)
594 term->curs.y = newrows - 1;
595 if (term->curs.x >= newcols)
596 term->curs.x = newcols - 1;
597 term->alt_x = term->alt_y = 0;
598 term->wrapnext = term->alt_wnext = FALSE;
600 term->rows = newrows;
601 term->cols = newcols;
602 term->savelines = newsavelines;
605 swap_screen(term, save_alt_which, FALSE, FALSE);
610 term->resize_fn(term->resize_ctx, term->cols, term->rows);
614 * Hand a function and context pointer to the terminal which it can
615 * use to notify a back end of resizes.
617 void term_provide_resize_fn(Terminal *term,
618 void (*resize_fn)(void *, int, int),
621 term->resize_fn = resize_fn;
622 term->resize_ctx = resize_ctx;
623 if (term->cols > 0 && term->rows > 0)
624 resize_fn(resize_ctx, term->cols, term->rows);
627 /* Find the bottom line on the screen that has any content.
628 * If only the top line has content, returns 0.
629 * If no lines have content, return -1.
631 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
634 for (i = count234(screen) - 1; i >= 0; i--) {
635 unsigned long *line = index234(screen, i);
638 for (j = 0; j < cols; j++) {
639 if (line[j + 1] != term->erase_char) break;
641 if (j != cols) break;
647 * Swap screens. If `reset' is TRUE and we have been asked to
648 * switch to the alternate screen, we must bring most of its
649 * configuration from the main screen and erase the contents of the
650 * alternate screen completely. (This is even true if we're already
651 * on it! Blame xterm.)
653 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
659 reset = FALSE; /* do no weird resetting if which==0 */
661 if (which != term->alt_which) {
662 term->alt_which = which;
664 ttr = term->alt_screen;
665 term->alt_screen = term->screen;
667 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
669 if (!reset && !keep_cur_pos)
670 term->curs.x = term->alt_x;
673 if (!reset && !keep_cur_pos)
674 term->curs.y = term->alt_y;
677 if (!reset) term->marg_t = term->alt_t;
680 if (!reset) term->marg_b = term->alt_b;
683 if (!reset) term->dec_om = term->alt_om;
686 if (!reset) term->wrap = term->alt_wrap;
689 if (!reset) term->wrapnext = term->alt_wnext;
692 if (!reset) term->insert = term->alt_ins;
695 if (!reset) term->cset = term->alt_cset;
698 if (!reset) term->utf = term->alt_utf;
701 if (!reset) term->sco_acs = term->alt_sco_acs;
702 term->alt_sco_acs = t;
705 if (reset && term->screen) {
707 * Yes, this _is_ supposed to honour background-colour-erase.
709 erase_lots(term, FALSE, TRUE, TRUE);
713 * This might not be possible if we're called during
721 * Update the scroll bar.
723 static void update_sbar(Terminal *term)
725 int nscroll = sblines(term);
726 set_sbar(term->frontend, nscroll + term->rows,
727 nscroll + term->disptop, term->rows);
731 * Check whether the region bounded by the two pointers intersects
732 * the scroll region, and de-select the on-screen selection if so.
734 static void check_selection(Terminal *term, pos from, pos to)
736 if (poslt(from, term->selend) && poslt(term->selstart, to))
741 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
742 * for backward.) `sb' is TRUE if the scrolling is permitted to
743 * affect the scrollback buffer.
745 * NB this function invalidates all pointers into lines of the
746 * screen data structures. In particular, you MUST call fix_cpos
747 * after calling scroll() and before doing anything else that
748 * uses the cpos shortcut pointer.
750 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
752 unsigned long *line, *line2;
753 int i, seltop, olddisptop, shift;
755 if (topline != 0 || term->alt_which != 0)
758 olddisptop = term->disptop;
762 line = delpos234(term->screen, botline);
763 line = resizeline(line, term->cols);
764 for (i = 0; i < term->cols; i++)
765 line[i + 1] = term->erase_char;
766 line[term->cols + 1] = 0;
767 addpos234(term->screen, line, topline);
769 if (term->selstart.y >= topline && term->selstart.y <= botline) {
771 if (term->selstart.y > botline) {
772 term->selstart.y = botline + 1;
773 term->selstart.x = 0;
776 if (term->selend.y >= topline && term->selend.y <= botline) {
778 if (term->selend.y > botline) {
779 term->selend.y = botline + 1;
788 line = delpos234(term->screen, topline);
789 if (sb && term->savelines > 0) {
790 int sblen = count234(term->scrollback);
792 * We must add this line to the scrollback. We'll
793 * remove a line from the top of the scrollback to
794 * replace it, or allocate a new one if the
795 * scrollback isn't full.
797 if (sblen == term->savelines) {
798 sblen--, line2 = delpos234(term->scrollback, 0);
800 line2 = snewn(term->cols + 2, TTYPE);
801 line2[0] = term->cols;
802 term->tempsblines += 1;
804 addpos234(term->scrollback, line, sblen);
808 * If the user is currently looking at part of the
809 * scrollback, and they haven't enabled any options
810 * that are going to reset the scrollback as a
811 * result of this movement, then the chances are
812 * they'd like to keep looking at the same line. So
813 * we move their viewpoint at the same rate as the
814 * scroll, at least until their viewpoint hits the
815 * top end of the scrollback buffer, at which point
816 * we don't have the choice any more.
818 * Thanks to Jan Holmen Holsten for the idea and
819 * initial implementation.
821 if (term->disptop > -term->savelines && term->disptop < 0)
824 line = resizeline(line, term->cols);
825 for (i = 0; i < term->cols; i++)
826 line[i + 1] = term->erase_char;
827 line[term->cols + 1] = LATTR_NORM;
828 addpos234(term->screen, line, botline);
831 * If the selection endpoints move into the scrollback,
832 * we keep them moving until they hit the top. However,
833 * of course, if the line _hasn't_ moved into the
834 * scrollback then we don't do this, and cut them off
835 * at the top of the scroll region.
837 * This applies to selstart and selend (for an existing
838 * selection), and also selanchor (for one being
839 * selected as we speak).
841 seltop = sb ? -term->savelines : topline;
843 if (term->selstart.y >= seltop &&
844 term->selstart.y <= botline) {
846 if (term->selstart.y < seltop) {
847 term->selstart.y = seltop;
848 term->selstart.x = 0;
851 if (term->selend.y >= seltop && term->selend.y <= botline) {
853 if (term->selend.y < seltop) {
854 term->selend.y = seltop;
858 if (term->selanchor.y >= seltop && term->selanchor.y <= botline) {
860 if (term->selanchor.y < seltop) {
861 term->selanchor.y = seltop;
862 term->selanchor.x = 0;
869 #ifdef OPTIMISE_SCROLL
870 shift += term->disptop - olddisptop;
871 if (shift < term->rows && shift > -term->rows && shift != 0)
872 scroll_display(term, topline, botline, shift);
873 #endif /* OPTIMISE_SCROLL */
876 #ifdef OPTIMISE_SCROLL
878 * Add a scroll of a region on the screen into the pending scroll list.
879 * `lines' is +ve for scrolling forward, -ve for backward.
881 * If the scroll is on the same area as the last scroll in the list,
884 static void save_scroll(Terminal *term, int topline, int botline, int lines)
886 struct scrollregion *newscroll;
887 if (term->scrolltail &&
888 term->scrolltail->topline == topline &&
889 term->scrolltail->botline == botline) {
890 term->scrolltail->lines += lines;
892 newscroll = snew(struct scrollregion);
893 newscroll->topline = topline;
894 newscroll->botline = botline;
895 newscroll->lines = lines;
896 newscroll->next = NULL;
898 if (!term->scrollhead)
899 term->scrollhead = newscroll;
901 term->scrolltail->next = newscroll;
902 term->scrolltail = newscroll;
907 * Scroll the physical display, and our conception of it in disptext.
909 static void scroll_display(Terminal *term, int topline, int botline, int lines)
911 unsigned long *start, *end;
912 int distance, size, i;
914 start = term->disptext + topline * (term->cols + 1);
915 end = term->disptext + (botline + 1) * (term->cols + 1);
916 distance = (lines > 0 ? lines : -lines) * (term->cols + 1);
917 size = end - start - distance;
919 memmove(start, start + distance, size * TSIZE);
920 if (term->dispcurs >= start + distance &&
921 term->dispcurs <= start + distance + size)
922 term->dispcurs -= distance;
923 for (i = 0; i < distance; i++)
924 (start + size)[i] |= ATTR_INVALID;
926 memmove(start + distance, start, size * TSIZE);
927 if (term->dispcurs >= start && term->dispcurs <= start + size)
928 term->dispcurs += distance;
929 for (i = 0; i < distance; i++)
930 start[i] |= ATTR_INVALID;
932 save_scroll(term, topline, botline, lines);
934 #endif /* OPTIMISE_SCROLL */
937 * Move the cursor to a given position, clipping at boundaries. We
938 * may or may not want to clip at the scroll margin: marg_clip is 0
939 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
940 * even _being_ outside the margins.
942 static void move(Terminal *term, int x, int y, int marg_clip)
949 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
952 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
963 term->wrapnext = FALSE;
967 * Save or restore the cursor and SGR mode.
969 static void save_cursor(Terminal *term, int save)
972 term->savecurs = term->curs;
973 term->save_attr = term->curr_attr;
974 term->save_cset = term->cset;
975 term->save_utf = term->utf;
976 term->save_wnext = term->wrapnext;
977 term->save_csattr = term->cset_attr[term->cset];
978 term->save_sco_acs = term->sco_acs;
980 term->curs = term->savecurs;
981 /* Make sure the window hasn't shrunk since the save */
982 if (term->curs.x >= term->cols)
983 term->curs.x = term->cols - 1;
984 if (term->curs.y >= term->rows)
985 term->curs.y = term->rows - 1;
987 term->curr_attr = term->save_attr;
988 term->cset = term->save_cset;
989 term->utf = term->save_utf;
990 term->wrapnext = term->save_wnext;
992 * wrapnext might reset to False if the x position is no
993 * longer at the rightmost edge.
995 if (term->wrapnext && term->curs.x < term->cols-1)
996 term->wrapnext = FALSE;
997 term->cset_attr[term->cset] = term->save_csattr;
998 term->sco_acs = term->save_sco_acs;
1001 term->erase_char = (' ' | ATTR_ASCII |
1003 (ATTR_FGMASK | ATTR_BGMASK)));
1008 * This function is called before doing _anything_ which affects
1009 * only part of a line of text. It is used to mark the boundary
1010 * between two character positions, and it indicates that some sort
1011 * of effect is going to happen on only one side of that boundary.
1013 * The effect of this function is to check whether a CJK
1014 * double-width character is straddling the boundary, and to remove
1015 * it and replace it with two spaces if so. (Of course, one or
1016 * other of those spaces is then likely to be replaced with
1017 * something else again, as a result of whatever happens next.)
1019 * Also, if the boundary is at the right-hand _edge_ of the screen,
1020 * it implies something deliberate is being done to the rightmost
1021 * column position; hence we must clear LATTR_WRAPPED2.
1023 * The input to the function is the coordinates of the _second_
1024 * character of the pair.
1026 static void check_boundary(Terminal *term, int x, int y)
1028 unsigned long *ldata;
1030 /* Validate input coordinates, just in case. */
1031 if (x == 0 || x > term->cols)
1035 if (x == term->cols) {
1036 ldata[x] &= ~LATTR_WRAPPED2;
1038 if ((ldata[x] & (CHAR_MASK | CSET_MASK)) == UCSWIDE) {
1039 ldata[x-1] = ldata[x] =
1040 (ldata[x-1] &~ (CHAR_MASK | CSET_MASK)) | ATTR_ASCII | ' ';
1046 * Erase a large portion of the screen: the whole screen, or the
1047 * whole line, or parts thereof.
1049 static void erase_lots(Terminal *term,
1050 int line_only, int from_begin, int to_end)
1054 int erasing_lines_from_top = 0;
1057 start.y = term->curs.y;
1059 end.y = term->curs.y + 1;
1061 erase_lattr = FALSE;
1076 if (!from_begin || !to_end)
1077 check_boundary(term, term->curs.x, term->curs.y);
1078 check_selection(term, start, end);
1080 /* Clear screen also forces a full window redraw, just in case. */
1081 if (start.y == 0 && start.x == 0 && end.y == term->rows)
1082 term_invalidate(term);
1084 /* Lines scrolled away shouldn't be brought back on if the terminal
1086 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
1087 erasing_lines_from_top = 1;
1089 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
1090 /* If it's a whole number of lines, starting at the top, and
1091 * we're fully erasing them, erase by scrolling and keep the
1092 * lines in the scrollback. */
1093 int scrolllines = end.y;
1094 if (end.y == term->rows) {
1095 /* Shrink until we find a non-empty row.*/
1096 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
1098 if (scrolllines > 0)
1099 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
1102 unsigned long *ldata = lineptr(start.y);
1103 while (poslt(start, end)) {
1104 if (start.x == term->cols) {
1106 ldata[start.x] &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
1108 ldata[start.x] = LATTR_NORM;
1110 ldata[start.x] = term->erase_char;
1112 if (incpos(start) && start.y < term->rows)
1113 ldata = lineptr(start.y);
1117 /* After an erase of lines from the top of the screen, we shouldn't
1118 * bring the lines back again if the terminal enlarges (since the user or
1119 * application has explictly thrown them away). */
1120 if (erasing_lines_from_top && !(term->alt_which))
1121 term->tempsblines = 0;
1125 * Insert or delete characters within the current line. n is +ve if
1126 * insertion is desired, and -ve for deletion.
1128 static void insch(Terminal *term, int n)
1130 int dir = (n < 0 ? -1 : +1);
1133 unsigned long *ldata;
1135 n = (n < 0 ? -n : n);
1136 if (n > term->cols - term->curs.x)
1137 n = term->cols - term->curs.x;
1138 m = term->cols - term->curs.x - n;
1139 cursplus.y = term->curs.y;
1140 cursplus.x = term->curs.x + n;
1141 check_selection(term, term->curs, cursplus);
1142 check_boundary(term, term->curs.x, term->curs.y);
1144 check_boundary(term, term->curs.x + n, term->curs.y);
1145 ldata = lineptr(term->curs.y);
1147 memmove(ldata + term->curs.x, ldata + term->curs.x + n, m * TSIZE);
1149 ldata[term->curs.x + m++] = term->erase_char;
1151 memmove(ldata + term->curs.x + n, ldata + term->curs.x, m * TSIZE);
1153 ldata[term->curs.x + n] = term->erase_char;
1158 * Toggle terminal mode `mode' to state `state'. (`query' indicates
1159 * whether the mode is a DEC private one or a normal one.)
1161 static void toggle_mode(Terminal *term, int mode, int query, int state)
1163 unsigned long ticks;
1167 case 1: /* application cursor keys */
1168 term->app_cursor_keys = state;
1170 case 2: /* VT52 mode */
1171 term->vt52_mode = !state;
1172 if (term->vt52_mode) {
1173 term->blink_is_real = FALSE;
1174 term->vt52_bold = FALSE;
1176 term->blink_is_real = term->cfg.blinktext;
1179 case 3: /* 80/132 columns */
1181 if (!term->cfg.no_remote_resize)
1182 request_resize(term->frontend, state ? 132 : 80, term->rows);
1183 term->reset_132 = state;
1184 term->alt_t = term->marg_t = 0;
1185 term->alt_b = term->marg_b = term->rows - 1;
1186 move(term, 0, 0, 0);
1187 erase_lots(term, FALSE, TRUE, TRUE);
1189 case 5: /* reverse video */
1191 * Toggle reverse video. If we receive an OFF within the
1192 * visual bell timeout period after an ON, we trigger an
1193 * effective visual bell, so that ESC[?5hESC[?5l will
1194 * always be an actually _visible_ visual bell.
1196 ticks = GETTICKCOUNT();
1197 /* turn off a previous vbell to avoid inconsistencies */
1198 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
1199 term->in_vbell = FALSE;
1200 if (term->rvideo && !state && /* we're turning it off... */
1201 (ticks - term->rvbell_startpoint) < VBELL_TIMEOUT) {/*...soon*/
1202 /* If there's no vbell timeout already, or this one lasts
1203 * longer, replace vbell_timeout with ours. */
1204 if (!term->in_vbell ||
1205 (term->rvbell_startpoint - term->vbell_startpoint <
1207 term->vbell_startpoint = term->rvbell_startpoint;
1208 term->in_vbell = TRUE; /* may clear rvideo but set in_vbell */
1209 } else if (!term->rvideo && state) {
1210 /* This is an ON, so we notice the time and save it. */
1211 term->rvbell_startpoint = ticks;
1213 term->rvideo = state;
1214 term->seen_disp_event = TRUE;
1218 case 6: /* DEC origin mode */
1219 term->dec_om = state;
1221 case 7: /* auto wrap */
1224 case 8: /* auto key repeat */
1225 term->repeat_off = !state;
1227 case 10: /* set local edit mode */
1228 term->term_editing = state;
1229 if (term->ldisc) /* cause ldisc to notice changes */
1230 ldisc_send(term->ldisc, NULL, 0, 0);
1232 case 25: /* enable/disable cursor */
1233 compatibility2(OTHER, VT220);
1234 term->cursor_on = state;
1235 term->seen_disp_event = TRUE;
1237 case 47: /* alternate screen */
1238 compatibility(OTHER);
1240 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
1243 case 1000: /* xterm mouse 1 */
1244 term->xterm_mouse = state ? 1 : 0;
1245 set_raw_mouse_mode(term->frontend, state);
1247 case 1002: /* xterm mouse 2 */
1248 term->xterm_mouse = state ? 2 : 0;
1249 set_raw_mouse_mode(term->frontend, state);
1251 case 1047: /* alternate screen */
1252 compatibility(OTHER);
1254 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
1257 case 1048: /* save/restore cursor */
1258 save_cursor(term, state);
1259 if (!state) term->seen_disp_event = TRUE;
1261 case 1049: /* cursor & alternate screen */
1263 save_cursor(term, state);
1264 if (!state) term->seen_disp_event = TRUE;
1265 compatibility(OTHER);
1267 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
1269 save_cursor(term, state);
1274 case 4: /* set insert mode */
1275 compatibility(VT102);
1276 term->insert = state;
1278 case 12: /* set echo mode */
1279 term->term_echoing = !state;
1280 if (term->ldisc) /* cause ldisc to notice changes */
1281 ldisc_send(term->ldisc, NULL, 0, 0);
1283 case 20: /* Return sends ... */
1284 term->cr_lf_return = state;
1286 case 34: /* Make cursor BIG */
1287 compatibility2(OTHER, VT220);
1288 term->big_cursor = !state;
1293 * Process an OSC sequence: set window title or icon name.
1295 static void do_osc(Terminal *term)
1298 while (term->osc_strlen--)
1299 term->wordness[(unsigned char)
1300 term->osc_string[term->osc_strlen]] = term->esc_args[0];
1302 term->osc_string[term->osc_strlen] = '\0';
1303 switch (term->esc_args[0]) {
1306 if (!term->cfg.no_remote_wintitle)
1307 set_icon(term->frontend, term->osc_string);
1308 if (term->esc_args[0] == 1)
1310 /* fall through: parameter 0 means set both */
1313 if (!term->cfg.no_remote_wintitle)
1314 set_title(term->frontend, term->osc_string);
1321 * ANSI printing routines.
1323 static void term_print_setup(Terminal *term)
1325 bufchain_clear(&term->printer_buf);
1326 term->print_job = printer_start_job(term->cfg.printer);
1328 static void term_print_flush(Terminal *term)
1333 while ((size = bufchain_size(&term->printer_buf)) > 5) {
1334 bufchain_prefix(&term->printer_buf, &data, &len);
1337 printer_job_data(term->print_job, data, len);
1338 bufchain_consume(&term->printer_buf, len);
1341 static void term_print_finish(Terminal *term)
1347 if (!term->printing && !term->only_printing)
1348 return; /* we need do nothing */
1350 term_print_flush(term);
1351 while ((size = bufchain_size(&term->printer_buf)) > 0) {
1352 bufchain_prefix(&term->printer_buf, &data, &len);
1354 if (c == '\033' || c == '\233') {
1355 bufchain_consume(&term->printer_buf, size);
1358 printer_job_data(term->print_job, &c, 1);
1359 bufchain_consume(&term->printer_buf, 1);
1362 printer_finish_job(term->print_job);
1363 term->print_job = NULL;
1364 term->printing = term->only_printing = FALSE;
1368 * Remove everything currently in `inbuf' and stick it up on the
1369 * in-memory display. There's a big state machine in here to
1370 * process escape sequences...
1372 void term_out(Terminal *term)
1375 unsigned char localbuf[256], *chars;
1380 chars = NULL; /* placate compiler warnings */
1381 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
1385 bufchain_prefix(&term->inbuf, &ret, &nchars);
1386 if (nchars > sizeof(localbuf))
1387 nchars = sizeof(localbuf);
1388 memcpy(localbuf, ret, nchars);
1389 bufchain_consume(&term->inbuf, nchars);
1391 assert(chars != NULL);
1397 * Optionally log the session traffic to a file. Useful for
1398 * debugging and possibly also useful for actual logging.
1400 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
1401 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
1407 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1408 * be able to display 8-bit characters, but I'll let that go 'cause
1413 * If we're printing, add the character to the printer
1416 if (term->printing) {
1417 bufchain_add(&term->printer_buf, &c, 1);
1420 * If we're in print-only mode, we use a much simpler
1421 * state machine designed only to recognise the ESC[4i
1422 * termination sequence.
1424 if (term->only_printing) {
1426 term->print_state = 1;
1427 else if (c == (unsigned char)'\233')
1428 term->print_state = 2;
1429 else if (c == '[' && term->print_state == 1)
1430 term->print_state = 2;
1431 else if (c == '4' && term->print_state == 2)
1432 term->print_state = 3;
1433 else if (c == 'i' && term->print_state == 3)
1434 term->print_state = 4;
1436 term->print_state = 0;
1437 if (term->print_state == 4) {
1438 term_print_finish(term);
1444 /* First see about all those translations. */
1445 if (term->termstate == TOPLEVEL) {
1447 switch (term->utf_state) {
1450 /* UTF-8 must be stateless so we ignore iso2022. */
1451 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1452 c = term->ucsdata->unitab_ctrl[c];
1453 else c = ((unsigned char)c) | ATTR_ASCII;
1455 } else if ((c & 0xe0) == 0xc0) {
1456 term->utf_size = term->utf_state = 1;
1457 term->utf_char = (c & 0x1f);
1458 } else if ((c & 0xf0) == 0xe0) {
1459 term->utf_size = term->utf_state = 2;
1460 term->utf_char = (c & 0x0f);
1461 } else if ((c & 0xf8) == 0xf0) {
1462 term->utf_size = term->utf_state = 3;
1463 term->utf_char = (c & 0x07);
1464 } else if ((c & 0xfc) == 0xf8) {
1465 term->utf_size = term->utf_state = 4;
1466 term->utf_char = (c & 0x03);
1467 } else if ((c & 0xfe) == 0xfc) {
1468 term->utf_size = term->utf_state = 5;
1469 term->utf_char = (c & 0x01);
1480 if ((c & 0xC0) != 0x80) {
1483 term->utf_state = 0;
1486 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
1487 if (--term->utf_state)
1492 /* Is somebody trying to be evil! */
1494 (c < 0x800 && term->utf_size >= 2) ||
1495 (c < 0x10000 && term->utf_size >= 3) ||
1496 (c < 0x200000 && term->utf_size >= 4) ||
1497 (c < 0x4000000 && term->utf_size >= 5))
1500 /* Unicode line separator and paragraph separator are CR-LF */
1501 if (c == 0x2028 || c == 0x2029)
1504 /* High controls are probably a Baaad idea too. */
1508 /* The UTF-16 surrogates are not nice either. */
1509 /* The standard give the option of decoding these:
1510 * I don't want to! */
1511 if (c >= 0xD800 && c < 0xE000)
1514 /* ISO 10646 characters now limited to UTF-16 range. */
1518 /* This is currently a TagPhobic application.. */
1519 if (c >= 0xE0000 && c <= 0xE007F)
1522 /* U+FEFF is best seen as a null. */
1525 /* But U+FFFE is an error. */
1526 if (c == 0xFFFE || c == 0xFFFF)
1529 /* Oops this is a 16bit implementation */
1534 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
1535 else if(term->sco_acs &&
1536 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
1538 if (term->sco_acs == 2) c |= 0x80;
1541 switch (term->cset_attr[term->cset]) {
1543 * Linedraw characters are different from 'ESC ( B'
1544 * only for a small range. For ones outside that
1545 * range, make sure we use the same font as well as
1546 * the same encoding.
1549 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1550 c = term->ucsdata->unitab_ctrl[c];
1552 c = ((unsigned char) c) | ATTR_LINEDRW;
1556 /* If UK-ASCII, make the '#' a LineDraw Pound */
1558 c = '}' | ATTR_LINEDRW;
1561 /*FALLTHROUGH*/ case ATTR_ASCII:
1562 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1563 c = term->ucsdata->unitab_ctrl[c];
1565 c = ((unsigned char) c) | ATTR_ASCII;
1568 if (c>=' ') c = ((unsigned char)c) | ATTR_SCOACS;
1574 /* How about C1 controls ? */
1575 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
1576 !term->vt52_mode && has_compat(VT220)) {
1577 term->termstate = SEEN_ESC;
1578 term->esc_query = FALSE;
1579 c = '@' + (c & 0x1F);
1582 /* Or the GL control. */
1583 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
1584 if (term->curs.x && !term->wrapnext)
1586 term->wrapnext = FALSE;
1588 if (!term->cfg.no_dbackspace) /* destructive bksp might be disabled */
1589 *term->cpos = (' ' | term->curr_attr | ATTR_ASCII);
1591 /* Or normal C0 controls. */
1592 if ((c & -32) == 0 && term->termstate < DO_CTRLS) {
1594 case '\005': /* terminal type query */
1595 /* Strictly speaking this is VT100 but a VT100 defaults to
1596 * no response. Other terminals respond at their option.
1598 * Don't put a CR in the default string as this tends to
1599 * upset some weird software.
1601 * An xterm returns "xterm" (5 characters)
1603 compatibility(ANSIMIN);
1605 char abuf[256], *s, *d;
1607 for (s = term->cfg.answerback, d = abuf; *s; s++) {
1609 if (*s >= 'a' && *s <= 'z')
1610 *d++ = (*s - ('a' - 1));
1611 else if ((*s >= '@' && *s <= '_') ||
1612 *s == '?' || (*s & 0x80))
1617 } else if (*s == '^') {
1622 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
1628 struct beeptime *newbeep;
1629 unsigned long ticks;
1631 ticks = GETTICKCOUNT();
1633 if (!term->beep_overloaded) {
1634 newbeep = snew(struct beeptime);
1635 newbeep->ticks = ticks;
1636 newbeep->next = NULL;
1637 if (!term->beephead)
1638 term->beephead = newbeep;
1640 term->beeptail->next = newbeep;
1641 term->beeptail = newbeep;
1646 * Throw out any beeps that happened more than
1649 while (term->beephead &&
1650 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
1651 struct beeptime *tmp = term->beephead;
1652 term->beephead = tmp->next;
1654 if (!term->beephead)
1655 term->beeptail = NULL;
1659 if (term->cfg.bellovl && term->beep_overloaded &&
1660 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
1662 * If we're currently overloaded and the
1663 * last beep was more than s seconds ago,
1664 * leave overload mode.
1666 term->beep_overloaded = FALSE;
1667 } else if (term->cfg.bellovl && !term->beep_overloaded &&
1668 term->nbeeps >= term->cfg.bellovl_n) {
1670 * Now, if we have n or more beeps
1671 * remaining in the queue, go into overload
1674 term->beep_overloaded = TRUE;
1676 term->lastbeep = ticks;
1679 * Perform an actual beep if we're not overloaded.
1681 if (!term->cfg.bellovl || !term->beep_overloaded) {
1682 beep(term->frontend, term->cfg.beep);
1683 if (term->cfg.beep == BELL_VISUAL) {
1684 term->in_vbell = TRUE;
1685 term->vbell_startpoint = ticks;
1693 if (term->curs.x == 0 &&
1694 (term->curs.y == 0 || term->wrap == 0))
1696 else if (term->curs.x == 0 && term->curs.y > 0)
1697 term->curs.x = term->cols - 1, term->curs.y--;
1698 else if (term->wrapnext)
1699 term->wrapnext = FALSE;
1703 term->seen_disp_event = TRUE;
1706 compatibility(VT100);
1710 compatibility(VT100);
1714 if (term->vt52_mode)
1715 term->termstate = VT52_ESC;
1717 compatibility(ANSIMIN);
1718 term->termstate = SEEN_ESC;
1719 term->esc_query = FALSE;
1724 term->wrapnext = FALSE;
1726 term->seen_disp_event = TRUE;
1727 term->paste_hold = 0;
1729 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1732 if (has_compat(SCOANSI)) {
1733 move(term, 0, 0, 0);
1734 erase_lots(term, FALSE, FALSE, TRUE);
1736 term->wrapnext = FALSE;
1737 term->seen_disp_event = 1;
1741 compatibility(VT100);
1743 if (term->curs.y == term->marg_b)
1744 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1745 else if (term->curs.y < term->rows - 1)
1747 if (term->cfg.lfhascr)
1750 term->wrapnext = FALSE;
1751 term->seen_disp_event = 1;
1752 term->paste_hold = 0;
1754 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1758 pos old_curs = term->curs;
1759 unsigned long *ldata = lineptr(term->curs.y);
1763 } while (term->curs.x < term->cols - 1 &&
1764 !term->tabs[term->curs.x]);
1766 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM) {
1767 if (term->curs.x >= term->cols / 2)
1768 term->curs.x = term->cols / 2 - 1;
1770 if (term->curs.x >= term->cols)
1771 term->curs.x = term->cols - 1;
1775 check_selection(term, old_curs, term->curs);
1777 term->seen_disp_event = TRUE;
1781 switch (term->termstate) {
1783 /* Only graphic characters get this far;
1784 * ctrls are stripped above */
1785 if (term->wrapnext && term->wrap) {
1786 term->cpos[1] |= LATTR_WRAPPED;
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)
1793 term->wrapnext = FALSE;
1797 if (term->selstate != NO_SELECTION) {
1798 pos cursplus = term->curs;
1800 check_selection(term, term->curs, cursplus);
1802 if (((c & CSET_MASK) == ATTR_ASCII || (c & CSET_MASK) == 0) &&
1804 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1810 width = wcwidth((wchar_t) c);
1814 * If we're about to display a double-width
1815 * character starting in the rightmost
1816 * column, then we do something special
1817 * instead. We must print a space in the
1818 * last column of the screen, then wrap;
1819 * and we also set LATTR_WRAPPED2 which
1820 * instructs subsequent cut-and-pasting not
1821 * only to splice this line to the one
1822 * after it, but to ignore the space in the
1823 * last character position as well.
1824 * (Because what was actually output to the
1825 * terminal was presumably just a sequence
1826 * of CJK characters, and we don't want a
1827 * space to be pasted in the middle of
1828 * those just because they had the
1829 * misfortune to start in the wrong parity
1830 * column. xterm concurs.)
1832 check_boundary(term, term->curs.x, term->curs.y);
1833 check_boundary(term, term->curs.x+2, term->curs.y);
1834 if (term->curs.x == term->cols-1) {
1835 *term->cpos++ = ATTR_ASCII | ' ' | term->curr_attr;
1836 *term->cpos |= LATTR_WRAPPED | LATTR_WRAPPED2;
1837 if (term->curs.y == term->marg_b)
1838 scroll(term, term->marg_t, term->marg_b,
1840 else if (term->curs.y < term->rows - 1)
1844 /* Now we must check_boundary again, of course. */
1845 check_boundary(term, term->curs.x, term->curs.y);
1846 check_boundary(term, term->curs.x+2, term->curs.y);
1848 *term->cpos++ = c | term->curr_attr;
1849 *term->cpos++ = UCSWIDE | term->curr_attr;
1853 check_boundary(term, term->curs.x, term->curs.y);
1854 check_boundary(term, term->curs.x+1, term->curs.y);
1855 *term->cpos++ = c | term->curr_attr;
1862 if (term->curs.x == term->cols) {
1865 term->wrapnext = TRUE;
1866 if (term->wrap && term->vt52_mode) {
1867 term->cpos[1] |= LATTR_WRAPPED;
1868 if (term->curs.y == term->marg_b)
1869 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1870 else if (term->curs.y < term->rows - 1)
1874 term->wrapnext = FALSE;
1877 term->seen_disp_event = 1;
1882 * This state is virtually identical to SEEN_ESC, with the
1883 * exception that we have an OSC sequence in the pipeline,
1884 * and _if_ we see a backslash, we process it.
1888 term->termstate = TOPLEVEL;
1891 /* else fall through */
1893 if (c >= ' ' && c <= '/') {
1894 if (term->esc_query)
1895 term->esc_query = -1;
1897 term->esc_query = c;
1900 term->termstate = TOPLEVEL;
1901 switch (ANSI(c, term->esc_query)) {
1902 case '[': /* enter CSI mode */
1903 term->termstate = SEEN_CSI;
1904 term->esc_nargs = 1;
1905 term->esc_args[0] = ARG_DEFAULT;
1906 term->esc_query = FALSE;
1908 case ']': /* xterm escape sequences */
1909 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1910 compatibility(OTHER);
1911 term->termstate = SEEN_OSC;
1912 term->esc_args[0] = 0;
1914 case '7': /* save cursor */
1915 compatibility(VT100);
1916 save_cursor(term, TRUE);
1918 case '8': /* restore cursor */
1919 compatibility(VT100);
1920 save_cursor(term, FALSE);
1921 term->seen_disp_event = TRUE;
1924 compatibility(VT100);
1925 term->app_keypad_keys = TRUE;
1928 compatibility(VT100);
1929 term->app_keypad_keys = FALSE;
1931 case 'D': /* exactly equivalent to LF */
1932 compatibility(VT100);
1933 if (term->curs.y == term->marg_b)
1934 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1935 else if (term->curs.y < term->rows - 1)
1938 term->wrapnext = FALSE;
1939 term->seen_disp_event = TRUE;
1941 case 'E': /* exactly equivalent to CR-LF */
1942 compatibility(VT100);
1944 if (term->curs.y == term->marg_b)
1945 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1946 else if (term->curs.y < term->rows - 1)
1949 term->wrapnext = FALSE;
1950 term->seen_disp_event = TRUE;
1952 case 'M': /* reverse index - backwards LF */
1953 compatibility(VT100);
1954 if (term->curs.y == term->marg_t)
1955 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
1956 else if (term->curs.y > 0)
1959 term->wrapnext = FALSE;
1960 term->seen_disp_event = TRUE;
1962 case 'Z': /* terminal type query */
1963 compatibility(VT100);
1965 ldisc_send(term->ldisc, term->id_string,
1966 strlen(term->id_string), 0);
1968 case 'c': /* restore power-on settings */
1969 compatibility(VT100);
1971 if (term->ldisc) /* cause ldisc to notice changes */
1972 ldisc_send(term->ldisc, NULL, 0, 0);
1973 if (term->reset_132) {
1974 if (!term->cfg.no_remote_resize)
1975 request_resize(term->frontend, 80, term->rows);
1976 term->reset_132 = 0;
1980 term->seen_disp_event = TRUE;
1982 case 'H': /* set a tab */
1983 compatibility(VT100);
1984 term->tabs[term->curs.x] = TRUE;
1987 case ANSI('8', '#'): /* ESC # 8 fills screen with Es :-) */
1988 compatibility(VT100);
1990 unsigned long *ldata;
1994 for (i = 0; i < term->rows; i++) {
1996 for (j = 0; j < term->cols; j++)
1997 ldata[j] = ATTR_DEFAULT | 'E';
1998 ldata[term->cols] = 0;
2001 term->seen_disp_event = TRUE;
2002 scrtop.x = scrtop.y = 0;
2004 scrbot.y = term->rows;
2005 check_selection(term, scrtop, scrbot);
2009 case ANSI('3', '#'):
2010 case ANSI('4', '#'):
2011 case ANSI('5', '#'):
2012 case ANSI('6', '#'):
2013 compatibility(VT100);
2015 unsigned long nlattr;
2016 unsigned long *ldata;
2017 switch (ANSI(c, term->esc_query)) {
2018 case ANSI('3', '#'):
2021 case ANSI('4', '#'):
2024 case ANSI('5', '#'):
2025 nlattr = LATTR_NORM;
2027 default: /* spiritually case ANSI('6', '#'): */
2028 nlattr = LATTR_WIDE;
2031 ldata = lineptr(term->curs.y);
2032 ldata[term->cols] &= ~LATTR_MODE;
2033 ldata[term->cols] |= nlattr;
2037 case ANSI('A', '('):
2038 compatibility(VT100);
2039 if (!term->cfg.no_remote_charset)
2040 term->cset_attr[0] = ATTR_GBCHR;
2042 case ANSI('B', '('):
2043 compatibility(VT100);
2044 if (!term->cfg.no_remote_charset)
2045 term->cset_attr[0] = ATTR_ASCII;
2047 case ANSI('0', '('):
2048 compatibility(VT100);
2049 if (!term->cfg.no_remote_charset)
2050 term->cset_attr[0] = ATTR_LINEDRW;
2052 case ANSI('U', '('):
2053 compatibility(OTHER);
2054 if (!term->cfg.no_remote_charset)
2055 term->cset_attr[0] = ATTR_SCOACS;
2058 case ANSI('A', ')'):
2059 compatibility(VT100);
2060 if (!term->cfg.no_remote_charset)
2061 term->cset_attr[1] = ATTR_GBCHR;
2063 case ANSI('B', ')'):
2064 compatibility(VT100);
2065 if (!term->cfg.no_remote_charset)
2066 term->cset_attr[1] = ATTR_ASCII;
2068 case ANSI('0', ')'):
2069 compatibility(VT100);
2070 if (!term->cfg.no_remote_charset)
2071 term->cset_attr[1] = ATTR_LINEDRW;
2073 case ANSI('U', ')'):
2074 compatibility(OTHER);
2075 if (!term->cfg.no_remote_charset)
2076 term->cset_attr[1] = ATTR_SCOACS;
2079 case ANSI('8', '%'): /* Old Linux code */
2080 case ANSI('G', '%'):
2081 compatibility(OTHER);
2082 if (!term->cfg.no_remote_charset)
2085 case ANSI('@', '%'):
2086 compatibility(OTHER);
2087 if (!term->cfg.no_remote_charset)
2093 term->termstate = TOPLEVEL; /* default */
2095 if (term->esc_nargs <= ARGS_MAX) {
2096 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
2097 term->esc_args[term->esc_nargs - 1] = 0;
2098 term->esc_args[term->esc_nargs - 1] =
2099 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
2101 term->termstate = SEEN_CSI;
2102 } else if (c == ';') {
2103 if (++term->esc_nargs <= ARGS_MAX)
2104 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
2105 term->termstate = SEEN_CSI;
2106 } else if (c < '@') {
2107 if (term->esc_query)
2108 term->esc_query = -1;
2110 term->esc_query = TRUE;
2112 term->esc_query = c;
2113 term->termstate = SEEN_CSI;
2115 switch (ANSI(c, term->esc_query)) {
2116 case 'A': /* move up N lines */
2117 move(term, term->curs.x,
2118 term->curs.y - def(term->esc_args[0], 1), 1);
2119 term->seen_disp_event = TRUE;
2121 case 'e': /* move down N lines */
2122 compatibility(ANSI);
2125 move(term, term->curs.x,
2126 term->curs.y + def(term->esc_args[0], 1), 1);
2127 term->seen_disp_event = TRUE;
2129 case ANSI('c', '>'): /* report xterm version */
2130 compatibility(OTHER);
2131 /* this reports xterm version 136 so that VIM can
2132 use the drag messages from the mouse reporting */
2134 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
2136 case 'a': /* move right N cols */
2137 compatibility(ANSI);
2140 move(term, term->curs.x + def(term->esc_args[0], 1),
2142 term->seen_disp_event = TRUE;
2144 case 'D': /* move left N cols */
2145 move(term, term->curs.x - def(term->esc_args[0], 1),
2147 term->seen_disp_event = TRUE;
2149 case 'E': /* move down N lines and CR */
2150 compatibility(ANSI);
2152 term->curs.y + def(term->esc_args[0], 1), 1);
2153 term->seen_disp_event = TRUE;
2155 case 'F': /* move up N lines and CR */
2156 compatibility(ANSI);
2158 term->curs.y - def(term->esc_args[0], 1), 1);
2159 term->seen_disp_event = TRUE;
2162 case '`': /* set horizontal posn */
2163 compatibility(ANSI);
2164 move(term, def(term->esc_args[0], 1) - 1,
2166 term->seen_disp_event = TRUE;
2168 case 'd': /* set vertical posn */
2169 compatibility(ANSI);
2170 move(term, term->curs.x,
2171 ((term->dec_om ? term->marg_t : 0) +
2172 def(term->esc_args[0], 1) - 1),
2173 (term->dec_om ? 2 : 0));
2174 term->seen_disp_event = TRUE;
2177 case 'f': /* set horz and vert posns at once */
2178 if (term->esc_nargs < 2)
2179 term->esc_args[1] = ARG_DEFAULT;
2180 move(term, def(term->esc_args[1], 1) - 1,
2181 ((term->dec_om ? term->marg_t : 0) +
2182 def(term->esc_args[0], 1) - 1),
2183 (term->dec_om ? 2 : 0));
2184 term->seen_disp_event = TRUE;
2186 case 'J': /* erase screen or parts of it */
2188 unsigned int i = def(term->esc_args[0], 0) + 1;
2191 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
2194 term->seen_disp_event = TRUE;
2196 case 'K': /* erase line or parts of it */
2198 unsigned int i = def(term->esc_args[0], 0) + 1;
2201 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
2203 term->seen_disp_event = TRUE;
2205 case 'L': /* insert lines */
2206 compatibility(VT102);
2207 if (term->curs.y <= term->marg_b)
2208 scroll(term, term->curs.y, term->marg_b,
2209 -def(term->esc_args[0], 1), FALSE);
2211 term->seen_disp_event = TRUE;
2213 case 'M': /* delete lines */
2214 compatibility(VT102);
2215 if (term->curs.y <= term->marg_b)
2216 scroll(term, term->curs.y, term->marg_b,
2217 def(term->esc_args[0], 1),
2220 term->seen_disp_event = TRUE;
2222 case '@': /* insert chars */
2223 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
2224 compatibility(VT102);
2225 insch(term, def(term->esc_args[0], 1));
2226 term->seen_disp_event = TRUE;
2228 case 'P': /* delete chars */
2229 compatibility(VT102);
2230 insch(term, -def(term->esc_args[0], 1));
2231 term->seen_disp_event = TRUE;
2233 case 'c': /* terminal type query */
2234 compatibility(VT100);
2235 /* This is the response for a VT102 */
2237 ldisc_send(term->ldisc, term->id_string,
2238 strlen(term->id_string), 0);
2240 case 'n': /* cursor position query */
2242 if (term->esc_args[0] == 6) {
2244 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
2246 ldisc_send(term->ldisc, buf, strlen(buf), 0);
2247 } else if (term->esc_args[0] == 5) {
2248 ldisc_send(term->ldisc, "\033[0n", 4, 0);
2252 case 'h': /* toggle modes to high */
2254 compatibility(VT100);
2257 for (i = 0; i < term->esc_nargs; i++)
2258 toggle_mode(term, term->esc_args[i],
2259 term->esc_query, TRUE);
2264 compatibility(VT100);
2266 if (term->esc_nargs != 1) break;
2267 if (term->esc_args[0] == 5 && *term->cfg.printer) {
2268 term->printing = TRUE;
2269 term->only_printing = !term->esc_query;
2270 term->print_state = 0;
2271 term_print_setup(term);
2272 } else if (term->esc_args[0] == 4 &&
2274 term_print_finish(term);
2278 case 'l': /* toggle modes to low */
2280 compatibility(VT100);
2283 for (i = 0; i < term->esc_nargs; i++)
2284 toggle_mode(term, term->esc_args[i],
2285 term->esc_query, FALSE);
2288 case 'g': /* clear tabs */
2289 compatibility(VT100);
2290 if (term->esc_nargs == 1) {
2291 if (term->esc_args[0] == 0) {
2292 term->tabs[term->curs.x] = FALSE;
2293 } else if (term->esc_args[0] == 3) {
2295 for (i = 0; i < term->cols; i++)
2296 term->tabs[i] = FALSE;
2300 case 'r': /* set scroll margins */
2301 compatibility(VT100);
2302 if (term->esc_nargs <= 2) {
2304 top = def(term->esc_args[0], 1) - 1;
2305 bot = (term->esc_nargs <= 1
2306 || term->esc_args[1] == 0 ?
2308 def(term->esc_args[1], term->rows)) - 1;
2309 if (bot >= term->rows)
2310 bot = term->rows - 1;
2311 /* VTTEST Bug 9 - if region is less than 2 lines
2312 * don't change region.
2314 if (bot - top > 0) {
2319 * I used to think the cursor should be
2320 * placed at the top of the newly marginned
2321 * area. Apparently not: VMS TPU falls over
2324 * Well actually it should for
2327 term->curs.y = (term->dec_om ?
2330 term->seen_disp_event = TRUE;
2334 case 'm': /* set graphics rendition */
2337 * A VT100 without the AVO only had one
2338 * attribute, either underline or
2339 * reverse video depending on the
2340 * cursor type, this was selected by
2344 * This is sometimes DIM, eg on the
2347 * This is sometimes INVIS various ANSI.
2349 * This like 22 disables BOLD, DIM and INVIS
2351 * The ANSI colours appear on any
2352 * terminal that has colour (obviously)
2353 * but the interaction between sgr0 and
2354 * the colours varies but is usually
2355 * related to the background colour
2356 * erase item. The interaction between
2357 * colour attributes and the mono ones
2358 * is also very implementation
2361 * The 39 and 49 attributes are likely
2362 * to be unimplemented.
2365 for (i = 0; i < term->esc_nargs; i++) {
2366 switch (def(term->esc_args[i], 0)) {
2367 case 0: /* restore defaults */
2368 term->curr_attr = ATTR_DEFAULT;
2370 case 1: /* enable bold */
2371 compatibility(VT100AVO);
2372 term->curr_attr |= ATTR_BOLD;
2374 case 21: /* (enable double underline) */
2375 compatibility(OTHER);
2376 case 4: /* enable underline */
2377 compatibility(VT100AVO);
2378 term->curr_attr |= ATTR_UNDER;
2380 case 5: /* enable blink */
2381 compatibility(VT100AVO);
2382 term->curr_attr |= ATTR_BLINK;
2384 case 7: /* enable reverse video */
2385 term->curr_attr |= ATTR_REVERSE;
2387 case 10: /* SCO acs off */
2388 compatibility(SCOANSI);
2389 if (term->cfg.no_remote_charset) break;
2390 term->sco_acs = 0; break;
2391 case 11: /* SCO acs on */
2392 compatibility(SCOANSI);
2393 if (term->cfg.no_remote_charset) break;
2394 term->sco_acs = 1; break;
2395 case 12: /* SCO acs on, |0x80 */
2396 compatibility(SCOANSI);
2397 if (term->cfg.no_remote_charset) break;
2398 term->sco_acs = 2; break;
2399 case 22: /* disable bold */
2400 compatibility2(OTHER, VT220);
2401 term->curr_attr &= ~ATTR_BOLD;
2403 case 24: /* disable underline */
2404 compatibility2(OTHER, VT220);
2405 term->curr_attr &= ~ATTR_UNDER;
2407 case 25: /* disable blink */
2408 compatibility2(OTHER, VT220);
2409 term->curr_attr &= ~ATTR_BLINK;
2411 case 27: /* disable reverse video */
2412 compatibility2(OTHER, VT220);
2413 term->curr_attr &= ~ATTR_REVERSE;
2424 term->curr_attr &= ~ATTR_FGMASK;
2426 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
2436 /* xterm-style bright foreground */
2437 term->curr_attr &= ~ATTR_FGMASK;
2439 ((term->esc_args[i] - 90 + 16)
2442 case 39: /* default-foreground */
2443 term->curr_attr &= ~ATTR_FGMASK;
2444 term->curr_attr |= ATTR_DEFFG;
2455 term->curr_attr &= ~ATTR_BGMASK;
2457 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
2467 /* xterm-style bright background */
2468 term->curr_attr &= ~ATTR_BGMASK;
2470 ((term->esc_args[i] - 100 + 16)
2473 case 49: /* default-background */
2474 term->curr_attr &= ~ATTR_BGMASK;
2475 term->curr_attr |= ATTR_DEFBG;
2480 term->erase_char = (' ' | ATTR_ASCII |
2486 case 's': /* save cursor */
2487 save_cursor(term, TRUE);
2489 case 'u': /* restore cursor */
2490 save_cursor(term, FALSE);
2491 term->seen_disp_event = TRUE;
2493 case 't': /* set page size - ie window height */
2495 * VT340/VT420 sequence DECSLPP, DEC only allows values
2496 * 24/25/36/48/72/144 other emulators (eg dtterm) use
2497 * illegal values (eg first arg 1..9) for window changing
2500 if (term->esc_nargs <= 1
2501 && (term->esc_args[0] < 1 ||
2502 term->esc_args[0] >= 24)) {
2503 compatibility(VT340TEXT);
2504 if (!term->cfg.no_remote_resize)
2505 request_resize(term->frontend, term->cols,
2506 def(term->esc_args[0], 24));
2508 } else if (term->esc_nargs >= 1 &&
2509 term->esc_args[0] >= 1 &&
2510 term->esc_args[0] < 24) {
2511 compatibility(OTHER);
2513 switch (term->esc_args[0]) {
2517 set_iconic(term->frontend, FALSE);
2520 set_iconic(term->frontend, TRUE);
2523 if (term->esc_nargs >= 3) {
2524 if (!term->cfg.no_remote_resize)
2525 move_window(term->frontend,
2526 def(term->esc_args[1], 0),
2527 def(term->esc_args[2], 0));
2531 /* We should resize the window to a given
2532 * size in pixels here, but currently our
2533 * resizing code isn't healthy enough to
2538 set_zorder(term->frontend, TRUE);
2541 /* move to bottom */
2542 set_zorder(term->frontend, FALSE);
2545 refresh_window(term->frontend);
2548 if (term->esc_nargs >= 3) {
2549 if (!term->cfg.no_remote_resize)
2550 request_resize(term->frontend,
2551 def(term->esc_args[2], term->cfg.width),
2552 def(term->esc_args[1], term->cfg.height));
2556 if (term->esc_nargs >= 2)
2557 set_zoomed(term->frontend,
2563 ldisc_send(term->ldisc,
2564 is_iconic(term->frontend) ?
2565 "\033[1t" : "\033[2t", 4, 0);
2569 get_window_pos(term->frontend, &x, &y);
2570 len = sprintf(buf, "\033[3;%d;%dt", x, y);
2571 ldisc_send(term->ldisc, buf, len, 0);
2576 get_window_pixels(term->frontend, &x, &y);
2577 len = sprintf(buf, "\033[4;%d;%dt", x, y);
2578 ldisc_send(term->ldisc, buf, len, 0);
2583 len = sprintf(buf, "\033[8;%d;%dt",
2584 term->rows, term->cols);
2585 ldisc_send(term->ldisc, buf, len, 0);
2590 * Hmmm. Strictly speaking we
2591 * should return `the size of the
2592 * screen in characters', but
2593 * that's not easy: (a) window
2594 * furniture being what it is it's
2595 * hard to compute, and (b) in
2596 * resize-font mode maximising the
2597 * window wouldn't change the
2598 * number of characters. *shrug*. I
2599 * think we'll ignore it for the
2600 * moment and see if anyone
2601 * complains, and then ask them
2602 * what they would like it to do.
2607 p = get_window_title(term->frontend, TRUE);
2609 ldisc_send(term->ldisc, "\033]L", 3, 0);
2610 ldisc_send(term->ldisc, p, len, 0);
2611 ldisc_send(term->ldisc, "\033\\", 2, 0);
2616 p = get_window_title(term->frontend,FALSE);
2618 ldisc_send(term->ldisc, "\033]l", 3, 0);
2619 ldisc_send(term->ldisc, p, len, 0);
2620 ldisc_send(term->ldisc, "\033\\", 2, 0);
2627 compatibility(SCOANSI);
2628 scroll(term, term->marg_t, term->marg_b,
2629 def(term->esc_args[0], 1), TRUE);
2631 term->wrapnext = FALSE;
2632 term->seen_disp_event = TRUE;
2635 compatibility(SCOANSI);
2636 scroll(term, term->marg_t, term->marg_b,
2637 -def(term->esc_args[0], 1), TRUE);
2639 term->wrapnext = FALSE;
2640 term->seen_disp_event = TRUE;
2642 case ANSI('|', '*'):
2643 /* VT420 sequence DECSNLS
2644 * Set number of lines on screen
2645 * VT420 uses VGA like hardware and can support any size in
2646 * reasonable range (24..49 AIUI) with no default specified.
2648 compatibility(VT420);
2649 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
2650 if (!term->cfg.no_remote_resize)
2651 request_resize(term->frontend, term->cols,
2652 def(term->esc_args[0],
2657 case ANSI('|', '$'):
2658 /* VT340/VT420 sequence DECSCPP
2659 * Set number of columns per page
2660 * Docs imply range is only 80 or 132, but I'll allow any.
2662 compatibility(VT340TEXT);
2663 if (term->esc_nargs <= 1) {
2664 if (!term->cfg.no_remote_resize)
2665 request_resize(term->frontend,
2666 def(term->esc_args[0],
2667 term->cfg.width), term->rows);
2671 case 'X': /* write N spaces w/o moving cursor */
2672 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
2673 compatibility(ANSIMIN);
2675 int n = def(term->esc_args[0], 1);
2677 unsigned long *p = term->cpos;
2678 if (n > term->cols - term->curs.x)
2679 n = term->cols - term->curs.x;
2680 cursplus = term->curs;
2682 check_boundary(term, term->curs.x, term->curs.y);
2683 check_boundary(term, term->curs.x+n, term->curs.y);
2684 check_selection(term, term->curs, cursplus);
2686 *p++ = term->erase_char;
2687 term->seen_disp_event = TRUE;
2690 case 'x': /* report terminal characteristics */
2691 compatibility(VT100);
2694 int i = def(term->esc_args[0], 0);
2695 if (i == 0 || i == 1) {
2696 strcpy(buf, "\033[2;1;1;112;112;1;0x");
2698 ldisc_send(term->ldisc, buf, 20, 0);
2702 case 'Z': /* BackTab for xterm */
2703 compatibility(OTHER);
2705 int i = def(term->esc_args[0], 1);
2706 pos old_curs = term->curs;
2708 for(;i>0 && term->curs.x>0; i--) {
2711 } while (term->curs.x >0 &&
2712 !term->tabs[term->curs.x]);
2715 check_selection(term, old_curs, term->curs);
2718 case ANSI('L', '='):
2719 compatibility(OTHER);
2720 term->use_bce = (term->esc_args[0] <= 0);
2721 term->erase_char = ERASE_CHAR;
2723 term->erase_char = (' ' | ATTR_ASCII |
2725 (ATTR_FGMASK | ATTR_BGMASK)));
2727 case ANSI('E', '='):
2728 compatibility(OTHER);
2729 term->blink_is_real = (term->esc_args[0] >= 1);
2731 case ANSI('p', '"'):
2733 * Allow the host to make this emulator a
2734 * 'perfect' VT102. This first appeared in
2735 * the VT220, but we do need to get back to
2736 * PuTTY mode so I won't check it.
2738 * The arg in 40..42,50 are a PuTTY extension.
2739 * The 2nd arg, 8bit vs 7bit is not checked.
2741 * Setting VT102 mode should also change
2742 * the Fkeys to generate PF* codes as a
2743 * real VT102 has no Fkeys. The VT220 does
2744 * this, F11..F13 become ESC,BS,LF other
2745 * Fkeys send nothing.
2747 * Note ESC c will NOT change this!
2750 switch (term->esc_args[0]) {
2752 term->compatibility_level &= ~TM_VTXXX;
2753 term->compatibility_level |= TM_VT102;
2756 term->compatibility_level &= ~TM_VTXXX;
2757 term->compatibility_level |= TM_VT220;
2761 if (term->esc_args[0] > 60 &&
2762 term->esc_args[0] < 70)
2763 term->compatibility_level |= TM_VTXXX;
2767 term->compatibility_level &= TM_VTXXX;
2770 term->compatibility_level = TM_PUTTY;
2773 term->compatibility_level = TM_SCOANSI;
2777 term->compatibility_level = TM_PUTTY;
2783 /* Change the response to CSI c */
2784 if (term->esc_args[0] == 50) {
2787 strcpy(term->id_string, "\033[?");
2788 for (i = 1; i < term->esc_nargs; i++) {
2790 strcat(term->id_string, ";");
2791 sprintf(lbuf, "%d", term->esc_args[i]);
2792 strcat(term->id_string, lbuf);
2794 strcat(term->id_string, "c");
2797 /* Is this a good idea ?
2798 * Well we should do a soft reset at this point ...
2800 if (!has_compat(VT420) && has_compat(VT100)) {
2801 if (!term->cfg.no_remote_resize) {
2802 if (term->reset_132)
2803 request_resize(132, 24);
2805 request_resize(80, 24);
2813 term->osc_w = FALSE;
2815 case 'P': /* Linux palette sequence */
2816 term->termstate = SEEN_OSC_P;
2817 term->osc_strlen = 0;
2819 case 'R': /* Linux palette reset */
2820 palette_reset(term->frontend);
2821 term_invalidate(term);
2822 term->termstate = TOPLEVEL;
2824 case 'W': /* word-set */
2825 term->termstate = SEEN_OSC_W;
2838 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
2842 * Grotty hack to support xterm and DECterm title
2843 * sequences concurrently.
2845 if (term->esc_args[0] == 2) {
2846 term->esc_args[0] = 1;
2849 /* else fall through */
2851 term->termstate = OSC_STRING;
2852 term->osc_strlen = 0;
2857 * This OSC stuff is EVIL. It takes just one character to get into
2858 * sysline mode and it's not initially obvious how to get out.
2859 * So I've added CR and LF as string aborts.
2860 * This shouldn't effect compatibility as I believe embedded
2861 * control characters are supposed to be interpreted (maybe?)
2862 * and they don't display anything useful anyway.
2866 if (c == '\012' || c == '\015') {
2867 term->termstate = TOPLEVEL;
2868 } else if (c == 0234 || c == '\007') {
2870 * These characters terminate the string; ST and BEL
2871 * terminate the sequence and trigger instant
2872 * processing of it, whereas ESC goes back to SEEN_ESC
2873 * mode unless it is followed by \, in which case it is
2874 * synonymous with ST in the first place.
2877 term->termstate = TOPLEVEL;
2878 } else if (c == '\033')
2879 term->termstate = OSC_MAYBE_ST;
2880 else if (term->osc_strlen < OSC_STR_MAX)
2881 term->osc_string[term->osc_strlen++] = c;
2885 int max = (term->osc_strlen == 0 ? 21 : 16);
2887 if (c >= '0' && c <= '9')
2889 else if (c >= 'A' && c <= 'A' + max - 10)
2891 else if (c >= 'a' && c <= 'a' + max - 10)
2894 term->termstate = TOPLEVEL;
2897 term->osc_string[term->osc_strlen++] = val;
2898 if (term->osc_strlen >= 7) {
2899 palette_set(term->frontend, term->osc_string[0],
2900 term->osc_string[1] * 16 + term->osc_string[2],
2901 term->osc_string[3] * 16 + term->osc_string[4],
2902 term->osc_string[5] * 16 + term->osc_string[6]);
2903 term_invalidate(term);
2904 term->termstate = TOPLEVEL;
2920 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
2923 term->termstate = OSC_STRING;
2924 term->osc_strlen = 0;
2928 term->termstate = TOPLEVEL;
2929 term->seen_disp_event = TRUE;
2932 move(term, term->curs.x, term->curs.y - 1, 1);
2935 move(term, term->curs.x, term->curs.y + 1, 1);
2938 move(term, term->curs.x + 1, term->curs.y, 1);
2941 move(term, term->curs.x - 1, term->curs.y, 1);
2944 * From the VT100 Manual
2945 * NOTE: The special graphics characters in the VT100
2946 * are different from those in the VT52
2948 * From VT102 manual:
2949 * 137 _ Blank - Same
2950 * 140 ` Reserved - Humm.
2951 * 141 a Solid rectangle - Similar
2952 * 142 b 1/ - Top half of fraction for the
2953 * 143 c 3/ - subscript numbers below.
2956 * 146 f Degrees - Same
2957 * 147 g Plus or minus - Same
2959 * 151 i Ellipsis (dots)
2962 * 154 l Bar at scan 0
2963 * 155 m Bar at scan 1
2964 * 156 n Bar at scan 2
2965 * 157 o Bar at scan 3 - Similar
2966 * 160 p Bar at scan 4 - Similar
2967 * 161 q Bar at scan 5 - Similar
2968 * 162 r Bar at scan 6 - Same
2969 * 163 s Bar at scan 7 - Similar
2984 term->cset_attr[term->cset = 0] = ATTR_LINEDRW;
2987 term->cset_attr[term->cset = 0] = ATTR_ASCII;
2990 move(term, 0, 0, 0);
2993 if (term->curs.y == 0)
2994 scroll(term, 0, term->rows - 1, -1, TRUE);
2995 else if (term->curs.y > 0)
2998 term->wrapnext = FALSE;
3001 erase_lots(term, FALSE, FALSE, TRUE);
3005 erase_lots(term, TRUE, FALSE, TRUE);
3009 /* XXX Print cursor line */
3012 /* XXX Start controller mode */
3015 /* XXX Stop controller mode */
3019 term->termstate = VT52_Y1;
3023 ldisc_send(term->ldisc, "\033/Z", 3, 0);
3026 term->app_keypad_keys = TRUE;
3029 term->app_keypad_keys = FALSE;
3032 /* XXX This should switch to VT100 mode not current or default
3033 * VT mode. But this will only have effect in a VT220+
3036 term->vt52_mode = FALSE;
3037 term->blink_is_real = term->cfg.blinktext;
3041 /* XXX Enter auto print mode */
3044 /* XXX Exit auto print mode */
3047 /* XXX Print screen */
3053 /* compatibility(ATARI) */
3054 move(term, 0, 0, 0);
3055 erase_lots(term, FALSE, FALSE, TRUE);
3059 /* compatibility(ATARI) */
3060 if (term->curs.y <= term->marg_b)
3061 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
3064 /* compatibility(ATARI) */
3065 if (term->curs.y <= term->marg_b)
3066 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
3069 /* compatibility(ATARI) */
3070 term->termstate = VT52_FG;
3073 /* compatibility(ATARI) */
3074 term->termstate = VT52_BG;
3077 /* compatibility(ATARI) */
3078 erase_lots(term, FALSE, TRUE, FALSE);
3082 /* compatibility(ATARI) */
3083 term->cursor_on = TRUE;
3086 /* compatibility(ATARI) */
3087 term->cursor_on = FALSE;
3089 /* case 'j': Save cursor position - broken on ST */
3090 /* case 'k': Restore cursor position */
3092 /* compatibility(ATARI) */
3093 erase_lots(term, TRUE, TRUE, TRUE);
3095 term->wrapnext = FALSE;
3099 /* compatibility(ATARI) */
3100 erase_lots(term, TRUE, TRUE, FALSE);
3103 /* compatibility(ATARI) */
3104 term->curr_attr |= ATTR_REVERSE;
3107 /* compatibility(ATARI) */
3108 term->curr_attr &= ~ATTR_REVERSE;
3110 case 'v': /* wrap Autowrap on - Wyse style */
3111 /* compatibility(ATARI) */
3114 case 'w': /* Autowrap off */
3115 /* compatibility(ATARI) */
3120 /* compatibility(OTHER) */
3121 term->vt52_bold = FALSE;
3122 term->curr_attr = ATTR_DEFAULT;
3124 term->erase_char = (' ' | ATTR_ASCII |
3126 (ATTR_FGMASK | ATTR_BGMASK)));
3129 /* compatibility(VI50) */
3130 term->curr_attr |= ATTR_UNDER;
3133 /* compatibility(VI50) */
3134 term->curr_attr &= ~ATTR_UNDER;
3137 /* compatibility(VI50) */
3138 term->vt52_bold = TRUE;
3139 term->curr_attr |= ATTR_BOLD;
3142 /* compatibility(VI50) */
3143 term->vt52_bold = FALSE;
3144 term->curr_attr &= ~ATTR_BOLD;
3150 term->termstate = VT52_Y2;
3151 move(term, term->curs.x, c - ' ', 0);
3154 term->termstate = TOPLEVEL;
3155 move(term, c - ' ', term->curs.y, 0);
3160 term->termstate = TOPLEVEL;
3161 term->curr_attr &= ~ATTR_FGMASK;
3162 term->curr_attr &= ~ATTR_BOLD;
3163 term->curr_attr |= (c & 0x7) << ATTR_FGSHIFT;
3164 if ((c & 0x8) || term->vt52_bold)
3165 term->curr_attr |= ATTR_BOLD;
3168 term->erase_char = (' ' | ATTR_ASCII |
3170 (ATTR_FGMASK | ATTR_BGMASK)));
3173 term->termstate = TOPLEVEL;
3174 term->curr_attr &= ~ATTR_BGMASK;
3175 term->curr_attr &= ~ATTR_BLINK;
3176 term->curr_attr |= (c & 0x7) << ATTR_BGSHIFT;
3178 /* Note: bold background */
3180 term->curr_attr |= ATTR_BLINK;
3183 term->erase_char = (' ' | ATTR_ASCII |
3185 (ATTR_FGMASK | ATTR_BGMASK)));
3188 default: break; /* placate gcc warning about enum use */
3190 if (term->selstate != NO_SELECTION) {
3191 pos cursplus = term->curs;
3193 check_selection(term, term->curs, cursplus);
3197 term_print_flush(term);
3202 * Compare two lines to determine whether they are sufficiently
3203 * alike to scroll-optimise one to the other. Return the degree of
3206 static int linecmp(Terminal *term, unsigned long *a, unsigned long *b)
3210 for (i = n = 0; i < term->cols; i++)
3211 n += (*a++ == *b++);
3217 * Given a context, update the window. Out of paranoia, we don't
3218 * allow WM_PAINT responses to do scrolling optimisations.
3220 static void do_paint(Terminal *term, Context ctx, int may_optimise)
3222 int i, j, our_curs_y, our_curs_x;
3223 unsigned long rv, cursor;
3226 long cursor_background = ERASE_CHAR;
3227 unsigned long ticks;
3228 #ifdef OPTIMISE_SCROLL
3229 struct scrollregion *sr;
3230 #endif /* OPTIMISE_SCROLL */
3233 * Check the visual bell state.
3235 if (term->in_vbell) {
3236 ticks = GETTICKCOUNT();
3237 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
3238 term->in_vbell = FALSE;
3241 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
3244 * screen array, disptop, scrtop,
3246 * cfg.blinkpc, blink_is_real, tblinker,
3247 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
3250 /* Has the cursor position or type changed ? */
3251 if (term->cursor_on) {
3252 if (term->has_focus) {
3253 if (term->blinker || !term->cfg.blink_cur)
3254 cursor = TATTR_ACTCURS;
3258 cursor = TATTR_PASCURS;
3260 cursor |= TATTR_RIGHTCURS;
3263 our_curs_y = term->curs.y - term->disptop;
3266 * Adjust the cursor position in the case where it's
3267 * resting on the right-hand half of a CJK wide character.
3268 * xterm's behaviour here, which seems adequate to me, is
3269 * to display the cursor covering the _whole_ character,
3270 * exactly as if it were one space to the left.
3272 unsigned long *ldata = lineptr(term->curs.y);
3273 our_curs_x = term->curs.x;
3274 if (our_curs_x > 0 &&
3275 (ldata[our_curs_x] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3279 if (term->dispcurs && (term->curstype != cursor ||
3281 term->disptext + our_curs_y * (term->cols + 1) +
3283 if (term->dispcurs > term->disptext &&
3284 (*term->dispcurs & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3285 term->dispcurs[-1] |= ATTR_INVALID;
3286 if ( (term->dispcurs[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3287 term->dispcurs[1] |= ATTR_INVALID;
3288 *term->dispcurs |= ATTR_INVALID;
3291 term->dispcurs = NULL;
3293 #ifdef OPTIMISE_SCROLL
3295 sr = term->scrollhead;
3297 struct scrollregion *next = sr->next;
3298 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
3302 term->scrollhead = term->scrolltail = NULL;
3303 #endif /* OPTIMISE_SCROLL */
3305 /* The normal screen data */
3306 for (i = 0; i < term->rows; i++) {
3307 unsigned long *ldata;
3309 int idx, dirty_line, dirty_run, selected;
3310 unsigned long attr = 0;
3311 int updated_line = 0;
3314 int last_run_dirty = 0;
3316 scrpos.y = i + term->disptop;
3317 ldata = lineptr(scrpos.y);
3318 lattr = (ldata[term->cols] & LATTR_MODE);
3320 idx = i * (term->cols + 1);
3321 dirty_run = dirty_line = (ldata[term->cols] !=
3322 term->disptext[idx + term->cols]);
3323 term->disptext[idx + term->cols] = ldata[term->cols];
3325 for (j = 0; j < term->cols; j++, idx++) {
3326 unsigned long tattr, tchar;
3327 unsigned long *d = ldata + j;
3331 tchar = (*d & (CHAR_MASK | CSET_MASK));
3332 tattr = (*d & (ATTR_MASK ^ CSET_MASK));
3333 switch (tchar & CSET_MASK) {
3335 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
3338 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
3341 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
3344 tattr |= (tchar & CSET_MASK);
3346 if ((d[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3349 /* Video reversing things */
3350 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
3351 if (term->seltype == LEXICOGRAPHIC)
3352 selected = (posle(term->selstart, scrpos) &&
3353 poslt(scrpos, term->selend));
3355 selected = (posPle(term->selstart, scrpos) &&
3356 posPlt(scrpos, term->selend));
3360 ^ (selected ? ATTR_REVERSE : 0));
3362 /* 'Real' blinking ? */
3363 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
3364 if (term->has_focus && term->tblinker) {
3365 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
3367 tattr &= ~ATTR_BLINK;
3371 * Check the font we'll _probably_ be using to see if
3372 * the character is wide when we don't want it to be.
3374 if ((tchar | tattr) != (term->disptext[idx]& ~ATTR_NARROW)) {
3375 if ((tattr & ATTR_WIDE) == 0 &&
3376 char_width(ctx, (tchar | tattr) & 0xFFFF) == 2)
3377 tattr |= ATTR_NARROW;
3378 } else if (term->disptext[idx]&ATTR_NARROW)
3379 tattr |= ATTR_NARROW;
3381 /* Cursor here ? Save the 'background' */
3382 if (i == our_curs_y && j == our_curs_x) {
3383 cursor_background = tattr | tchar;
3384 term->dispcurs = term->disptext + idx;
3387 if ((term->disptext[idx] ^ tattr) & ATTR_WIDE)
3390 break_run = (((tattr ^ attr) & term->attr_mask) ||
3391 j - start >= sizeof(ch));
3393 /* Special hack for VT100 Linedraw glyphs */
3394 if ((attr & CSET_MASK) == 0x2300 && tchar >= 0xBA
3395 && tchar <= 0xBD) break_run = TRUE;
3397 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
3398 if ((tchar | tattr) == term->disptext[idx])
3400 else if (!dirty_run && ccount == 1)
3405 if ((dirty_run || last_run_dirty) && ccount > 0) {
3406 do_text(ctx, start, i, ch, ccount, attr, lattr);
3412 if (term->ucsdata->dbcs_screenfont)
3413 last_run_dirty = dirty_run;
3414 dirty_run = dirty_line;
3417 if ((tchar | tattr) != term->disptext[idx])
3419 ch[ccount++] = (char) tchar;
3420 term->disptext[idx] = tchar | tattr;
3422 /* If it's a wide char step along to the next one. */
3423 if (tattr & ATTR_WIDE) {
3424 if (++j < term->cols) {
3428 * By construction above, the cursor should not
3429 * be on the right-hand half of this character.
3432 assert(!(i == our_curs_y && j == our_curs_x));
3433 if (term->disptext[idx] != *d)
3435 term->disptext[idx] = *d;
3439 if (dirty_run && ccount > 0) {
3440 do_text(ctx, start, i, ch, ccount, attr, lattr);
3444 /* Cursor on this line ? (and changed) */
3445 if (i == our_curs_y && (term->curstype != cursor || updated_line)) {
3446 ch[0] = (char) (cursor_background & CHAR_MASK);
3447 attr = (cursor_background & ATTR_MASK) | cursor;
3448 do_cursor(ctx, our_curs_x, i, ch, 1, attr, lattr);
3449 term->curstype = cursor;
3455 * Flick the switch that says if blinking things should be shown or hidden.
3458 void term_blink(Terminal *term, int flg)
3460 long now, blink_diff;
3462 now = GETTICKCOUNT();
3463 blink_diff = now - term->last_tblink;
3465 /* Make sure the text blinks no more than 2Hz; we'll use 0.45 s period. */
3466 if (blink_diff < 0 || blink_diff > (TICKSPERSEC * 9 / 20)) {
3467 term->last_tblink = now;
3468 term->tblinker = !term->tblinker;
3473 term->last_blink = now;
3477 blink_diff = now - term->last_blink;
3479 /* Make sure the cursor blinks no faster than system blink rate */
3480 if (blink_diff >= 0 && blink_diff < (long) CURSORBLINK)
3483 term->last_blink = now;
3484 term->blinker = !term->blinker;
3488 * Invalidate the whole screen so it will be repainted in full.
3490 void term_invalidate(Terminal *term)
3494 for (i = 0; i < term->rows * (term->cols + 1); i++)
3495 term->disptext[i] = ATTR_INVALID;
3499 * Paint the window in response to a WM_PAINT message.
3501 void term_paint(Terminal *term, Context ctx,
3502 int left, int top, int right, int bottom, int immediately)
3505 if (left < 0) left = 0;
3506 if (top < 0) top = 0;
3507 if (right >= term->cols) right = term->cols-1;
3508 if (bottom >= term->rows) bottom = term->rows-1;
3510 for (i = top; i <= bottom && i < term->rows; i++) {
3511 if ((term->disptext[i * (term->cols + 1) + term->cols] &
3512 LATTR_MODE) == LATTR_NORM)
3513 for (j = left; j <= right && j < term->cols; j++)
3514 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
3516 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
3517 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
3520 /* This should happen soon enough, also for some reason it sometimes
3521 * fails to actually do anything when re-sizing ... painting the wrong
3525 do_paint (term, ctx, FALSE);
3529 * Attempt to scroll the scrollback. The second parameter gives the
3530 * position we want to scroll to; the first is +1 to denote that
3531 * this position is relative to the beginning of the scrollback, -1
3532 * to denote it is relative to the end, and 0 to denote that it is
3533 * relative to the current position.
3535 void term_scroll(Terminal *term, int rel, int where)
3537 int sbtop = -sblines(term);
3538 #ifdef OPTIMISE_SCROLL
3539 int olddisptop = term->disptop;
3541 #endif /* OPTIMISE_SCROLL */
3543 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
3544 if (term->disptop < sbtop)
3545 term->disptop = sbtop;
3546 if (term->disptop > 0)
3549 #ifdef OPTIMISE_SCROLL
3550 shift = (term->disptop - olddisptop);
3551 if (shift < term->rows && shift > -term->rows)
3552 scroll_display(term, 0, term->rows - 1, shift);
3553 #endif /* OPTIMISE_SCROLL */
3557 static void clipme(Terminal *term, pos top, pos bottom, int rect)
3560 wchar_t *wbptr; /* where next char goes within workbuf */
3562 int wblen = 0; /* workbuf len */
3563 int buflen; /* amount of memory allocated to workbuf */
3565 buflen = 5120; /* Default size */
3566 workbuf = snewn(buflen, wchar_t);
3567 wbptr = workbuf; /* start filling here */
3568 old_top_x = top.x; /* needed for rect==1 */
3570 while (poslt(top, bottom)) {
3572 unsigned long *ldata = lineptr(top.y);
3576 * nlpos will point at the maximum position on this line we
3577 * should copy up to. So we start it at the end of the
3581 nlpos.x = term->cols;
3584 * ... move it backwards if there's unused space at the end
3585 * of the line (and also set `nl' if this is the case,
3586 * because in normal selection mode this means we need a
3587 * newline at the end)...
3589 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3590 while (((ldata[nlpos.x - 1] & 0xFF) == 0x20 ||
3591 (DIRECT_CHAR(ldata[nlpos.x - 1]) &&
3592 (ldata[nlpos.x - 1] & CHAR_MASK) == 0x20))
3593 && poslt(top, nlpos))
3595 if (poslt(nlpos, bottom))
3597 } else if (ldata[term->cols] & LATTR_WRAPPED2) {
3598 /* Ignore the last char on the line in a WRAPPED2 line. */
3603 * ... and then clip it to the terminal x coordinate if
3604 * we're doing rectangular selection. (In this case we
3605 * still did the above, so that copying e.g. the right-hand
3606 * column from a table doesn't fill with spaces on the
3610 if (nlpos.x > bottom.x)
3612 nl = (top.y < bottom.y);
3615 while (poslt(top, bottom) && poslt(top, nlpos)) {
3618 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
3620 wchar_t cbuf[16], *p;
3621 int uc = (ldata[top.x] & 0xFFFF);
3624 if (uc == UCSWIDE) {
3629 switch (uc & CSET_MASK) {
3631 if (!term->cfg.rawcnp) {
3632 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
3636 uc = term->ucsdata->unitab_line[uc & 0xFF];
3639 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
3642 switch (uc & CSET_MASK) {
3644 uc = term->ucsdata->unitab_font[uc & 0xFF];
3647 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
3651 set = (uc & CSET_MASK);
3652 c = (uc & CHAR_MASK);
3656 if (DIRECT_FONT(uc)) {
3657 if (c >= ' ' && c != 0x7F) {
3661 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
3663 buf[1] = (char) (0xFF & ldata[top.x + 1]);
3664 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
3668 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
3672 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
3679 for (p = cbuf; *p; p++) {
3680 /* Enough overhead for trailing NL and nul */
3681 if (wblen >= buflen - 16) {
3683 workbuf = sresize(workbuf, buflen, wchar_t);
3684 wbptr = workbuf + wblen;
3693 for (i = 0; i < sel_nl_sz; i++) {
3695 *wbptr++ = sel_nl[i];
3699 top.x = rect ? old_top_x : 0;
3701 #if SELECTION_NUL_TERMINATED
3705 write_clip(term->frontend, workbuf, wblen, FALSE); /* transfer to clipbd */
3706 if (buflen > 0) /* indicates we allocated this buffer */
3710 void term_copyall(Terminal *term)
3713 top.y = -sblines(term);
3715 clipme(term, top, term->curs, 0);
3719 * The wordness array is mainly for deciding the disposition of the
3720 * US-ASCII characters.
3722 static int wordtype(Terminal *term, int uc)
3725 int start, end, ctype;
3727 static const struct ucsword ucs_words[] = {
3733 0x037e, 0x037e, 1}, /* Greek question mark */
3735 0x0387, 0x0387, 1}, /* Greek ano teleia */
3737 0x055a, 0x055f, 1}, /* Armenian punctuation */
3739 0x0589, 0x0589, 1}, /* Armenian full stop */
3741 0x0700, 0x070d, 1}, /* Syriac punctuation */
3743 0x104a, 0x104f, 1}, /* Myanmar punctuation */
3745 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
3747 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
3749 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
3751 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
3753 0x1800, 0x180a, 1}, /* Mongolian punctuation */
3755 0x2000, 0x200a, 0}, /* Various spaces */
3757 0x2070, 0x207f, 2}, /* superscript */
3759 0x2080, 0x208f, 2}, /* subscript */
3761 0x200b, 0x27ff, 1}, /* punctuation and symbols */
3763 0x3000, 0x3000, 0}, /* ideographic space */
3765 0x3001, 0x3020, 1}, /* ideographic punctuation */
3767 0x303f, 0x309f, 3}, /* Hiragana */
3769 0x30a0, 0x30ff, 3}, /* Katakana */
3771 0x3300, 0x9fff, 3}, /* CJK Ideographs */
3773 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
3775 0xf900, 0xfaff, 3}, /* CJK Ideographs */
3777 0xfe30, 0xfe6b, 1}, /* punctuation forms */
3779 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
3781 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
3783 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
3785 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
3787 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
3791 const struct ucsword *wptr;
3793 uc &= (CSET_MASK | CHAR_MASK);
3795 switch (uc & CSET_MASK) {
3797 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
3800 uc = term->ucsdata->unitab_line[uc & 0xFF];
3803 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
3806 switch (uc & CSET_MASK) {
3808 uc = term->ucsdata->unitab_font[uc & 0xFF];
3811 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
3815 /* For DBCS font's I can't do anything usefull. Even this will sometimes
3816 * fail as there's such a thing as a double width space. :-(
3818 if (term->ucsdata->dbcs_screenfont &&
3819 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
3823 return term->wordness[uc];
3825 for (wptr = ucs_words; wptr->start; wptr++) {
3826 if (uc >= wptr->start && uc <= wptr->end)
3834 * Spread the selection outwards according to the selection mode.
3836 static pos sel_spread_half(Terminal *term, pos p, int dir)
3838 unsigned long *ldata;
3840 int topy = -sblines(term);
3842 ldata = lineptr(p.y);
3844 switch (term->selmode) {
3847 * In this mode, every character is a separate unit, except
3848 * for runs of spaces at the end of a non-wrapping line.
3850 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3851 unsigned long *q = ldata + term->cols;
3852 while (q > ldata && (q[-1] & CHAR_MASK) == 0x20)
3854 if (q == ldata + term->cols)
3856 if (p.x >= q - ldata)
3857 p.x = (dir == -1 ? q - ldata : term->cols - 1);
3862 * In this mode, the units are maximal runs of characters
3863 * whose `wordness' has the same value.
3865 wvalue = wordtype(term, UCSGET(ldata, p.x));
3868 int maxcols = (ldata[term->cols] & LATTR_WRAPPED2 ?
3869 term->cols-1 : term->cols);
3870 if (p.x < maxcols-1) {
3871 if (wordtype(term, UCSGET(ldata, p.x + 1)) == wvalue)
3876 if (ldata[term->cols] & LATTR_WRAPPED) {
3877 unsigned long *ldata2;
3878 ldata2 = lineptr(p.y+1);
3879 if (wordtype(term, UCSGET(ldata2, 0)) == wvalue) {
3892 if (wordtype(term, UCSGET(ldata, p.x - 1)) == wvalue)
3897 unsigned long *ldata2;
3901 ldata2 = lineptr(p.y-1);
3902 maxcols = (ldata2[term->cols] & LATTR_WRAPPED2 ?
3903 term->cols-1 : term->cols);
3904 if (ldata2[term->cols] & LATTR_WRAPPED) {
3905 if (wordtype(term, UCSGET(ldata2, maxcols-1))
3920 * In this mode, every line is a unit.
3922 p.x = (dir == -1 ? 0 : term->cols - 1);
3928 static void sel_spread(Terminal *term)
3930 if (term->seltype == LEXICOGRAPHIC) {
3931 term->selstart = sel_spread_half(term, term->selstart, -1);
3932 decpos(term->selend);
3933 term->selend = sel_spread_half(term, term->selend, +1);
3934 incpos(term->selend);
3938 void term_do_paste(Terminal *term)
3943 get_clip(term->frontend, &data, &len);
3944 if (data && len > 0) {
3947 term_seen_key_event(term); /* pasted data counts */
3949 if (term->paste_buffer)
3950 sfree(term->paste_buffer);
3951 term->paste_pos = term->paste_hold = term->paste_len = 0;
3952 term->paste_buffer = snewn(len, wchar_t);
3955 while (p < data + len) {
3956 while (p < data + len &&
3957 !(p <= data + len - sel_nl_sz &&
3958 !memcmp(p, sel_nl, sizeof(sel_nl))))
3963 for (i = 0; i < p - q; i++) {
3964 term->paste_buffer[term->paste_len++] = q[i];
3968 if (p <= data + len - sel_nl_sz &&
3969 !memcmp(p, sel_nl, sizeof(sel_nl))) {
3970 term->paste_buffer[term->paste_len++] = '\015';
3976 /* Assume a small paste will be OK in one go. */
3977 if (term->paste_len < 256) {
3979 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
3980 if (term->paste_buffer)
3981 sfree(term->paste_buffer);
3982 term->paste_buffer = 0;
3983 term->paste_pos = term->paste_hold = term->paste_len = 0;
3986 get_clip(term->frontend, NULL, NULL);
3989 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
3990 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
3993 unsigned long *ldata;
3994 int raw_mouse = (term->xterm_mouse &&
3995 !term->cfg.no_mouse_rep &&
3996 !(term->cfg.mouse_override && shift));
3997 int default_seltype;
4001 if (a == MA_DRAG && !raw_mouse)
4002 term_scroll(term, 0, -1);
4004 if (y >= term->rows) {
4006 if (a == MA_DRAG && !raw_mouse)
4007 term_scroll(term, 0, +1);
4016 if (x >= term->cols)
4019 selpoint.y = y + term->disptop;
4021 ldata = lineptr(selpoint.y);
4022 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM)
4026 int encstate = 0, r, c;
4033 encstate = 0x20; /* left button down */
4044 case MBT_WHEEL_DOWN:
4047 default: break; /* placate gcc warning about enum use */
4051 if (term->xterm_mouse == 1)
4057 term->mouse_is_down = 0;
4060 if (term->mouse_is_down == braw)
4062 term->mouse_is_down = braw;
4064 default: break; /* placate gcc warning about enum use */
4073 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
4074 ldisc_send(term->ldisc, abuf, 6, 0);
4080 * Set the selection type (rectangular or normal) at the start
4081 * of a selection attempt, from the state of Alt.
4083 if (!alt ^ !term->cfg.rect_select)
4084 default_seltype = RECTANGULAR;
4086 default_seltype = LEXICOGRAPHIC;
4088 if (term->selstate == NO_SELECTION) {
4089 term->seltype = default_seltype;
4092 if (bcooked == MBT_SELECT && a == MA_CLICK) {
4094 term->selstate = ABOUT_TO;
4095 term->seltype = default_seltype;
4096 term->selanchor = selpoint;
4097 term->selmode = SM_CHAR;
4098 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
4100 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
4101 term->selstate = DRAGGING;
4102 term->selstart = term->selanchor = selpoint;
4103 term->selend = term->selstart;
4104 incpos(term->selend);
4106 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
4107 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
4108 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
4110 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
4111 term->selstate == SELECTED) {
4112 if (term->seltype == LEXICOGRAPHIC) {
4114 * For normal selection, we extend by moving
4115 * whichever end of the current selection is closer
4118 if (posdiff(selpoint, term->selstart) <
4119 posdiff(term->selend, term->selstart) / 2) {
4120 term->selanchor = term->selend;
4121 decpos(term->selanchor);
4123 term->selanchor = term->selstart;
4127 * For rectangular selection, we have a choice of
4128 * _four_ places to put selanchor and selpoint: the
4129 * four corners of the selection.
4131 if (2*selpoint.x < term->selstart.x + term->selend.x)
4132 term->selanchor.x = term->selend.x-1;
4134 term->selanchor.x = term->selstart.x;
4136 if (2*selpoint.y < term->selstart.y + term->selend.y)
4137 term->selanchor.y = term->selend.y;
4139 term->selanchor.y = term->selstart.y;
4141 term->selstate = DRAGGING;
4143 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
4144 term->selanchor = selpoint;
4145 term->selstate = DRAGGING;
4146 if (term->seltype == LEXICOGRAPHIC) {
4148 * For normal selection, we set (selstart,selend) to
4149 * (selpoint,selanchor) in some order.
4151 if (poslt(selpoint, term->selanchor)) {
4152 term->selstart = selpoint;
4153 term->selend = term->selanchor;
4154 incpos(term->selend);
4156 term->selstart = term->selanchor;
4157 term->selend = selpoint;
4158 incpos(term->selend);
4162 * For rectangular selection, we may need to
4163 * interchange x and y coordinates (if the user has
4164 * dragged in the -x and +y directions, or vice versa).
4166 term->selstart.x = min(term->selanchor.x, selpoint.x);
4167 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
4168 term->selstart.y = min(term->selanchor.y, selpoint.y);
4169 term->selend.y = max(term->selanchor.y, selpoint.y);
4172 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
4174 if (term->selstate == DRAGGING) {
4176 * We've completed a selection. We now transfer the
4177 * data to the clipboard.
4179 clipme(term, term->selstart, term->selend,
4180 (term->seltype == RECTANGULAR));
4181 term->selstate = SELECTED;
4183 term->selstate = NO_SELECTION;
4184 } else if (bcooked == MBT_PASTE
4186 #if MULTICLICK_ONLY_EVENT
4187 || a == MA_2CLK || a == MA_3CLK
4190 request_paste(term->frontend);
4196 void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
4197 unsigned int modifiers, unsigned int flags)
4201 int prependesc = FALSE;
4205 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
4206 for (i = 0; i < tlen; i++)
4207 fprintf(stderr, " %04x", (unsigned)text[i]);
4208 fprintf(stderr, "\n");
4212 if ((flags & PKF_REPEAT) && term->repeat_off)
4215 /* Currently, Meta always just prefixes everything with ESC. */
4216 if (modifiers & PKM_META)
4218 modifiers &= ~PKM_META;
4221 * Alt is only used for Alt+keypad, which isn't supported yet, so
4224 modifiers &= ~PKM_ALT;
4226 /* Standard local function keys */
4227 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
4229 if (keysym == PK_PAGEUP)
4230 /* scroll up one page */;
4231 if (keysym == PK_PAGEDOWN)
4232 /* scroll down on page */;
4233 if (keysym == PK_INSERT)
4234 term_do_paste(term);
4237 if (keysym == PK_PAGEUP)
4238 /* scroll up one line */;
4239 if (keysym == PK_PAGEDOWN)
4240 /* scroll down one line */;
4241 /* Control-Numlock for app-keypad mode switch */
4242 if (keysym == PK_PF1)
4243 term->app_keypad_keys ^= 1;
4247 if (modifiers & PKM_ALT) {
4248 /* Alt+F4 (close) */
4249 /* Alt+Return (full screen) */
4250 /* Alt+Space (system menu) */
4253 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
4254 text[0] >= 0x20 && text[0] <= 0x7e) {
4255 /* ASCII chars + Control */
4256 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
4257 (text[0] >= 0x61 && text[0] <= 0x7a))
4261 * Control-2 should return ^@ (0x00), Control-6 should return
4262 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
4263 * the DOS keyboard handling did it, and we have nothing better
4264 * to do with the key combo in question, we'll also map
4265 * Control-Backquote to ^\ (0x1C).
4268 case ' ': text[0] = 0x00; break;
4269 case '-': text[0] = 0x1f; break;
4270 case '/': text[0] = 0x1f; break;
4271 case '2': text[0] = 0x00; break;
4272 case '3': text[0] = 0x1b; break;
4273 case '4': text[0] = 0x1c; break;
4274 case '5': text[0] = 0x1d; break;
4275 case '6': text[0] = 0x1e; break;
4276 case '7': text[0] = 0x1f; break;
4277 case '8': text[0] = 0x7f; break;
4278 case '`': text[0] = 0x1c; break;
4283 /* Nethack keypad */
4284 if (term->cfg.nethack_keypad) {
4287 case PK_KP1: c = 'b'; break;
4288 case PK_KP2: c = 'j'; break;
4289 case PK_KP3: c = 'n'; break;
4290 case PK_KP4: c = 'h'; break;
4291 case PK_KP5: c = '.'; break;
4292 case PK_KP6: c = 'l'; break;
4293 case PK_KP7: c = 'y'; break;
4294 case PK_KP8: c = 'k'; break;
4295 case PK_KP9: c = 'u'; break;
4296 default: break; /* else gcc warns `enum value not used' */
4300 if (modifiers & PKM_CONTROL)
4302 else if (modifiers & PKM_SHIFT)
4310 /* Numeric Keypad */
4311 if (PK_ISKEYPAD(keysym)) {
4315 * In VT400 mode, PFn always emits an escape sequence. In
4316 * Linux and tilde modes, this only happens in app keypad mode.
4318 if (term->cfg.funky_type == FUNKY_VT400 ||
4319 ((term->cfg.funky_type == FUNKY_LINUX ||
4320 term->cfg.funky_type == FUNKY_TILDE) &&
4321 term->app_keypad_keys && !term->cfg.no_applic_k)) {
4323 case PK_PF1: xkey = 'P'; break;
4324 case PK_PF2: xkey = 'Q'; break;
4325 case PK_PF3: xkey = 'R'; break;
4326 case PK_PF4: xkey = 'S'; break;
4327 default: break; /* else gcc warns `enum value not used' */
4330 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
4332 case PK_KP0: xkey = 'p'; break;
4333 case PK_KP1: xkey = 'q'; break;
4334 case PK_KP2: xkey = 'r'; break;
4335 case PK_KP3: xkey = 's'; break;
4336 case PK_KP4: xkey = 't'; break;
4337 case PK_KP5: xkey = 'u'; break;
4338 case PK_KP6: xkey = 'v'; break;
4339 case PK_KP7: xkey = 'w'; break;
4340 case PK_KP8: xkey = 'x'; break;
4341 case PK_KP9: xkey = 'y'; break;
4342 case PK_KPDECIMAL: xkey = 'n'; break;
4343 case PK_KPENTER: xkey = 'M'; break;
4344 default: break; /* else gcc warns `enum value not used' */
4346 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
4348 * xterm can't see the layout of the keypad, so it has
4349 * to rely on the X keysyms returned by the keys.
4350 * Hence, we look at the strings here, not the PuTTY
4351 * keysyms (which describe the layout).
4355 if (modifiers & PKM_SHIFT)
4360 case '/': xkey = 'o'; break;
4361 case '*': xkey = 'j'; break;
4362 case '-': xkey = 'm'; break;
4366 * In all other modes, we try to retain the layout of
4367 * the DEC keypad in application mode.
4371 /* This key covers the '-' and ',' keys on a VT220 */
4372 if (modifiers & PKM_SHIFT)
4373 xkey = 'm'; /* VT220 '-' */
4375 xkey = 'l'; /* VT220 ',' */
4377 case PK_KPMINUS: xkey = 'm'; break;
4378 case PK_KPCOMMA: xkey = 'l'; break;
4379 default: break; /* else gcc warns `enum value not used' */
4384 if (term->vt52_mode) {
4385 if (xkey >= 'P' && xkey <= 'S')
4386 p += sprintf((char *) p, "\x1B%c", xkey);
4388 p += sprintf((char *) p, "\x1B?%c", xkey);
4390 p += sprintf((char *) p, "\x1BO%c", xkey);
4393 /* Not in application mode -- treat the number pad as arrow keys? */
4394 if ((flags & PKF_NUMLOCK) == 0) {
4396 case PK_KP0: keysym = PK_INSERT; break;
4397 case PK_KP1: keysym = PK_END; break;
4398 case PK_KP2: keysym = PK_DOWN; break;
4399 case PK_KP3: keysym = PK_PAGEDOWN; break;
4400 case PK_KP4: keysym = PK_LEFT; break;
4401 case PK_KP5: keysym = PK_REST; break;
4402 case PK_KP6: keysym = PK_RIGHT; break;
4403 case PK_KP7: keysym = PK_HOME; break;
4404 case PK_KP8: keysym = PK_UP; break;
4405 case PK_KP9: keysym = PK_PAGEUP; break;
4406 default: break; /* else gcc warns `enum value not used' */
4411 /* Miscellaneous keys */
4418 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
4419 else if (modifiers == PKM_SHIFT)
4420 /* We do the opposite of what is configured */
4421 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
4427 else if (modifiers == PKM_SHIFT)
4428 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
4431 /* XXX window.c has ctrl+shift+space sending 0xa0 */
4433 if (modifiers == PKM_CONTROL)
4438 case PK_KPENTER: /* Odd keypad modes handled above */
4439 if (modifiers == 0) {
4441 if (term->cr_lf_return)
4445 default: break; /* else gcc warns `enum value not used' */
4448 /* SCO function keys and editing keys */
4449 if (term->cfg.funky_type == FUNKY_SCO) {
4450 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
4451 static char const codes[] =
4452 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
4453 int index = keysym - PK_F1;
4455 if (modifiers & PKM_SHIFT) index += 12;
4456 if (modifiers & PKM_CONTROL) index += 24;
4457 p += sprintf((char *) p, "\x1B[%c", codes[index]);
4460 if (PK_ISEDITING(keysym)) {
4464 case PK_DELETE: *p++ = 0x7f; goto done;
4465 case PK_HOME: xkey = 'H'; break;
4466 case PK_INSERT: xkey = 'L'; break;
4467 case PK_END: xkey = 'F'; break;
4468 case PK_PAGEUP: xkey = 'I'; break;
4469 case PK_PAGEDOWN: xkey = 'G'; break;
4470 default: break; /* else gcc warns `enum value not used' */
4472 p += sprintf((char *) p, "\x1B[%c", xkey);
4476 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
4479 if (term->cfg.funky_type == FUNKY_XTERM) {
4480 /* Xterm shuffles these keys, apparently. */
4482 case PK_HOME: keysym = PK_INSERT; break;
4483 case PK_INSERT: keysym = PK_HOME; break;
4484 case PK_DELETE: keysym = PK_END; break;
4485 case PK_END: keysym = PK_PAGEUP; break;
4486 case PK_PAGEUP: keysym = PK_DELETE; break;
4487 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
4488 default: break; /* else gcc warns `enum value not used' */
4493 if (term->cfg.rxvt_homeend &&
4494 (keysym == PK_HOME || keysym == PK_END)) {
4495 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
4499 if (term->vt52_mode) {
4503 * A real VT52 doesn't have these, and a VT220 doesn't
4504 * send anything for them in VT52 mode.
4507 case PK_HOME: xkey = 'H'; break;
4508 case PK_INSERT: xkey = 'L'; break;
4509 case PK_DELETE: xkey = 'M'; break;
4510 case PK_END: xkey = 'E'; break;
4511 case PK_PAGEUP: xkey = 'I'; break;
4512 case PK_PAGEDOWN: xkey = 'G'; break;
4513 default: break; /* else gcc warns `enum value not used' */
4515 p += sprintf((char *) p, "\x1B%c", xkey);
4520 case PK_HOME: code = 1; break;
4521 case PK_INSERT: code = 2; break;
4522 case PK_DELETE: code = 3; break;
4523 case PK_END: code = 4; break;
4524 case PK_PAGEUP: code = 5; break;
4525 case PK_PAGEDOWN: code = 6; break;
4526 default: break; /* else gcc warns `enum value not used' */
4528 p += sprintf((char *) p, "\x1B[%d~", code);
4532 if (PK_ISFKEY(keysym)) {
4533 /* Map Shift+F1-F10 to F11-F20 */
4534 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
4536 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
4538 /* XXX This overrides the XTERM/VT52 mode below */
4540 if (keysym >= PK_F6) offt++;
4541 if (keysym >= PK_F12) offt++;
4542 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
4543 'P' + keysym - PK_F1 - offt);
4546 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
4547 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
4550 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
4551 if (term->vt52_mode)
4552 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
4554 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
4557 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
4561 if (PK_ISCURSOR(keysym)) {
4565 case PK_UP: xkey = 'A'; break;
4566 case PK_DOWN: xkey = 'B'; break;
4567 case PK_RIGHT: xkey = 'C'; break;
4568 case PK_LEFT: xkey = 'D'; break;
4569 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
4570 default: break; /* else gcc warns `enum value not used' */
4572 if (term->vt52_mode)
4573 p += sprintf((char *) p, "\x1B%c", xkey);
4575 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
4577 /* Useful mapping of Ctrl-arrows */
4578 if (modifiers == PKM_CONTROL)
4582 p += sprintf((char *) p, "\x1BO%c", xkey);
4584 p += sprintf((char *) p, "\x1B[%c", xkey);
4590 if (p > output || tlen > 0) {
4592 * Interrupt an ongoing paste. I'm not sure
4593 * this is sensible, but for the moment it's
4594 * preferable to having to faff about buffering
4600 * We need not bother about stdin backlogs
4601 * here, because in GUI PuTTY we can't do
4602 * anything about it anyway; there's no means
4603 * of asking Windows to hold off on KEYDOWN
4604 * messages. We _have_ to buffer everything
4607 term_seen_key_event(term);
4611 fprintf(stderr, "sending ESC\n");
4613 ldisc_send(term->ldisc, "\x1b", 1, 1);
4618 fprintf(stderr, "sending %d bytes:", p - output);
4619 for (i = 0; i < p - output; i++)
4620 fprintf(stderr, " %02x", output[i]);
4621 fprintf(stderr, "\n");
4623 ldisc_send(term->ldisc, output, p - output, 1);
4624 } else if (tlen > 0) {
4626 fprintf(stderr, "sending %d unichars:", tlen);
4627 for (i = 0; i < tlen; i++)
4628 fprintf(stderr, " %04x", (unsigned) text[i]);
4629 fprintf(stderr, "\n");
4631 luni_send(term->ldisc, text, tlen, 1);
4636 void term_nopaste(Terminal *term)
4638 if (term->paste_len == 0)
4640 sfree(term->paste_buffer);
4641 term->paste_buffer = NULL;
4642 term->paste_len = 0;
4645 int term_paste_pending(Terminal *term)
4647 return term->paste_len != 0;
4650 void term_paste(Terminal *term)
4652 long now, paste_diff;
4654 if (term->paste_len == 0)
4657 /* Don't wait forever to paste */
4658 if (term->paste_hold) {
4659 now = GETTICKCOUNT();
4660 paste_diff = now - term->last_paste;
4661 if (paste_diff >= 0 && paste_diff < 450)
4664 term->paste_hold = 0;
4666 while (term->paste_pos < term->paste_len) {
4668 while (n + term->paste_pos < term->paste_len) {
4669 if (term->paste_buffer[term->paste_pos + n++] == '\015')
4673 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
4674 term->paste_pos += n;
4676 if (term->paste_pos < term->paste_len) {
4677 term->paste_hold = 1;
4681 sfree(term->paste_buffer);
4682 term->paste_buffer = NULL;
4683 term->paste_len = 0;
4686 static void deselect(Terminal *term)
4688 term->selstate = NO_SELECTION;
4689 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
4692 void term_deselect(Terminal *term)
4698 int term_ldisc(Terminal *term, int option)
4700 if (option == LD_ECHO)
4701 return term->term_echoing;
4702 if (option == LD_EDIT)
4703 return term->term_editing;
4708 * from_backend(), to get data from the backend for the terminal.
4710 int from_backend(void *vterm, int is_stderr, const char *data, int len)
4712 Terminal *term = (Terminal *)vterm;
4716 bufchain_add(&term->inbuf, data, len);
4719 * term_out() always completely empties inbuf. Therefore,
4720 * there's no reason at all to return anything other than zero
4721 * from this function, because there _can't_ be a question of
4722 * the remote side needing to wait until term_out() has cleared
4725 * This is a slightly suboptimal way to deal with SSH2 - in
4726 * principle, the window mechanism would allow us to continue
4727 * to accept data on forwarded ports and X connections even
4728 * while the terminal processing was going slowly - but we
4729 * can't do the 100% right thing without moving the terminal
4730 * processing into a separate thread, and that might hurt
4731 * portability. So we manage stdout buffering the old SSH1 way:
4732 * if the terminal processing goes slowly, the whole SSH
4733 * connection stops accepting data until it's ready.
4735 * In practice, I can't imagine this causing serious trouble.
4740 void term_provide_logctx(Terminal *term, void *logctx)
4742 term->logctx = logctx;