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 * Internal prototypes.
65 static void do_paint(Terminal *, Context, int);
66 static void erase_lots(Terminal *, int, int, int);
67 static void swap_screen(Terminal *, int, int, int);
68 static void update_sbar(Terminal *);
69 static void deselect(Terminal *);
70 static void term_print_finish(Terminal *);
73 * Resize a line to make it `cols' columns wide.
75 unsigned long *resizeline(unsigned long *line, int cols)
78 unsigned long lineattrs;
80 if (line[0] != (unsigned long)cols) {
82 * This line is the wrong length, which probably means it
83 * hasn't been accessed since a resize. Resize it now.
86 lineattrs = line[oldlen + 1];
87 line = srealloc(line, TSIZE * (2 + cols));
89 for (i = oldlen; i < cols; i++)
90 line[i + 1] = ERASE_CHAR;
91 line[cols + 1] = lineattrs & LATTR_MODE;
98 * Retrieve a line of the screen or of the scrollback, according to
99 * whether the y coordinate is non-negative or negative
102 unsigned long *lineptr(Terminal *term, int y, int lineno)
104 unsigned long *line, *newline;
109 whichtree = term->screen;
112 whichtree = term->scrollback;
113 treeindex = y + count234(term->scrollback);
115 line = index234(whichtree, treeindex);
117 /* We assume that we don't screw up and retrieve something out of range. */
118 assert(line != NULL);
120 newline = resizeline(line, term->cols);
121 if (newline != line) {
122 delpos234(whichtree, treeindex);
123 addpos234(whichtree, newline, treeindex);
130 #define lineptr(x) lineptr(term,x,__LINE__)
133 * Set up power-on settings for the terminal.
135 static void power_on(Terminal *term)
137 term->curs.x = term->curs.y = 0;
138 term->alt_x = term->alt_y = 0;
139 term->savecurs.x = term->savecurs.y = 0;
140 term->alt_t = term->marg_t = 0;
141 if (term->rows != -1)
142 term->alt_b = term->marg_b = term->rows - 1;
144 term->alt_b = term->marg_b = 0;
145 if (term->cols != -1) {
147 for (i = 0; i < term->cols; i++)
148 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
150 term->alt_om = term->dec_om = cfg.dec_om;
151 term->alt_wnext = term->wrapnext = term->alt_ins = term->insert = FALSE;
152 term->alt_wrap = term->wrap = cfg.wrap_mode;
153 term->alt_cset = term->cset = 0;
154 term->alt_utf = term->utf = 0;
155 term->alt_sco_acs = term->sco_acs = 0;
156 term->cset_attr[0] = term->cset_attr[1] = ATTR_ASCII;
158 term->in_vbell = FALSE;
160 term->big_cursor = 0;
161 term->save_attr = term->curr_attr = ATTR_DEFAULT;
162 term->term_editing = term->term_echoing = FALSE;
163 term->app_cursor_keys = cfg.app_cursor;
164 term->app_keypad_keys = cfg.app_keypad;
165 term->use_bce = cfg.bce;
166 term->blink_is_real = cfg.blinktext;
167 term->erase_char = ERASE_CHAR;
169 term_print_finish(term);
172 for (i = 0; i < 256; i++)
173 term->wordness[i] = cfg.wordness[i];
176 swap_screen(term, 1, FALSE, FALSE);
177 erase_lots(term, FALSE, TRUE, TRUE);
178 swap_screen(term, 0, FALSE, FALSE);
179 erase_lots(term, FALSE, TRUE, TRUE);
184 * Force a screen update.
186 void term_update(Terminal *term)
191 int need_sbar_update = term->seen_disp_event;
192 if (term->seen_disp_event && cfg.scroll_on_disp) {
193 term->disptop = 0; /* return to main screen */
194 term->seen_disp_event = 0;
195 need_sbar_update = TRUE;
197 if (need_sbar_update)
199 do_paint(term, ctx, TRUE);
200 sys_cursor(term->curs.x, term->curs.y - term->disptop);
206 * Called from front end when a keypress occurs, to trigger
207 * anything magical that needs to happen in that situation.
209 void term_seen_key_event(Terminal *term)
212 * On any keypress, clear the bell overload mechanism
213 * completely, on the grounds that large numbers of
214 * beeps coming from deliberate key action are likely
215 * to be intended (e.g. beeps from filename completion
216 * blocking repeatedly).
218 term->beep_overloaded = FALSE;
219 while (term->beephead) {
220 struct beeptime *tmp = term->beephead;
221 term->beephead = tmp->next;
224 term->beeptail = NULL;
228 * Reset the scrollback on keypress, if we're doing that.
230 if (cfg.scroll_on_key) {
231 term->disptop = 0; /* return to main screen */
232 term->seen_disp_event = 1;
237 * Same as power_on(), but an external function.
239 void term_pwron(Terminal *term)
242 ldisc_send(NULL, 0, 0); /* cause ldisc to notice changes */
250 * When the user reconfigures us, we need to check the forbidden-
251 * alternate-screen config option, disable raw mouse mode if the
252 * user has disabled mouse reporting, and abandon a print job if
253 * the user has disabled printing.
255 void term_reconfig(Terminal *term)
257 if (cfg.no_alt_screen)
258 swap_screen(term, 0, FALSE, FALSE);
259 if (cfg.no_mouse_rep) {
260 term->xterm_mouse = 0;
261 set_raw_mouse_mode(0);
263 if (cfg.no_remote_charset) {
264 term->cset_attr[0] = term->cset_attr[1] = ATTR_ASCII;
265 term->sco_acs = term->alt_sco_acs = 0;
269 term_print_finish(term);
274 * Clear the scrollback.
276 void term_clrsb(Terminal *term)
280 while ((line = delpos234(term->scrollback, 0)) != NULL) {
287 * Initialise the terminal.
289 Terminal *term_init(void)
294 * Allocate a new Terminal structure and initialise the fields
297 term = smalloc(sizeof(Terminal));
298 term->compatibility_level = TM_PUTTY;
299 strcpy(term->id_string, "\033[?6c");
300 term->last_blink = term->last_tblink = 0;
301 term->paste_buffer = NULL;
302 term->last_paste = 0;
303 bufchain_init(&term->inbuf);
304 bufchain_init(&term->printer_buf);
306 term->screen = term->alt_screen = term->scrollback = NULL;
308 term->disptext = term->dispcurs = NULL;
311 term->rows = term->cols = -1;
313 term->beephead = term->beeptail = NULL;
315 term->lastbeep = FALSE;
316 term->beep_overloaded = FALSE;
322 * Set up the terminal for a given size.
324 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
327 unsigned long *newdisp, *line;
330 int save_alt_which = term->alt_which;
332 if (newrows == term->rows && newcols == term->cols &&
333 newsavelines == term->savelines)
334 return; /* nothing to do */
337 swap_screen(term, 0, FALSE, FALSE);
339 term->alt_t = term->marg_t = 0;
340 term->alt_b = term->marg_b = newrows - 1;
342 if (term->rows == -1) {
343 term->scrollback = newtree234(NULL);
344 term->screen = newtree234(NULL);
349 * Resize the screen and scrollback. We only need to shift
350 * lines around within our data structures, because lineptr()
351 * will take care of resizing each individual line if
354 * - If the new screen and the old screen differ in length, we
355 * must shunt some lines in from the scrollback or out to
358 * - If doing that fails to provide us with enough material to
359 * fill the new screen (i.e. the number of rows needed in
360 * the new screen exceeds the total number in the previous
361 * screen+scrollback), we must invent some blank lines to
364 * - Then, if the new scrollback length is less than the
365 * amount of scrollback we actually have, we must throw some
368 sblen = count234(term->scrollback);
369 /* Do this loop to expand the screen if newrows > rows */
370 for (i = term->rows; i < newrows; i++) {
372 line = delpos234(term->scrollback, --sblen);
374 line = smalloc(TSIZE * (newcols + 2));
376 for (j = 0; j <= newcols; j++)
377 line[j + 1] = ERASE_CHAR;
379 addpos234(term->screen, line, 0);
381 /* Do this loop to shrink the screen if newrows < rows */
382 for (i = newrows; i < term->rows; i++) {
383 line = delpos234(term->screen, 0);
384 addpos234(term->scrollback, line, sblen++);
386 assert(count234(term->screen) == newrows);
387 while (sblen > newsavelines) {
388 line = delpos234(term->scrollback, 0);
392 assert(count234(term->scrollback) <= newsavelines);
395 newdisp = smalloc(newrows * (newcols + 1) * TSIZE);
396 for (i = 0; i < newrows * (newcols + 1); i++)
397 newdisp[i] = ATTR_INVALID;
398 sfree(term->disptext);
399 term->disptext = newdisp;
400 term->dispcurs = NULL;
402 newalt = newtree234(NULL);
403 for (i = 0; i < newrows; i++) {
404 line = smalloc(TSIZE * (newcols + 2));
406 for (j = 0; j <= newcols; j++)
407 line[j + 1] = term->erase_char;
408 addpos234(newalt, line, i);
410 if (term->alt_screen) {
411 while (NULL != (line = delpos234(term->alt_screen, 0)))
413 freetree234(term->alt_screen);
415 term->alt_screen = newalt;
417 term->tabs = srealloc(term->tabs, newcols * sizeof(*term->tabs));
420 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
421 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
425 term->curs.y += newrows - term->rows;
426 if (term->curs.y < 0)
428 if (term->curs.y >= newrows)
429 term->curs.y = newrows - 1;
430 if (term->curs.x >= newcols)
431 term->curs.x = newcols - 1;
432 term->alt_x = term->alt_y = 0;
433 term->wrapnext = term->alt_wnext = FALSE;
435 term->rows = newrows;
436 term->cols = newcols;
437 term->savelines = newsavelines;
440 swap_screen(term, save_alt_which, FALSE, FALSE);
448 * Swap screens. If `reset' is TRUE and we have been asked to
449 * switch to the alternate screen, we must bring most of its
450 * configuration from the main screen and erase the contents of the
451 * alternate screen completely. (This is even true if we're already
452 * on it! Blame xterm.)
454 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
460 reset = FALSE; /* do no weird resetting if which==0 */
462 if (which != term->alt_which) {
463 term->alt_which = which;
465 ttr = term->alt_screen;
466 term->alt_screen = term->screen;
469 if (!reset && !keep_cur_pos)
470 term->curs.x = term->alt_x;
473 if (!reset && !keep_cur_pos)
474 term->curs.y = term->alt_y;
477 if (!reset) term->marg_t = term->alt_t;
480 if (!reset) term->marg_b = term->alt_b;
483 if (!reset) term->dec_om = term->alt_om;
486 if (!reset) term->wrap = term->alt_wrap;
489 if (!reset) term->wrapnext = term->alt_wnext;
492 if (!reset) term->insert = term->alt_ins;
495 if (!reset) term->cset = term->alt_cset;
498 if (!reset) term->utf = term->alt_utf;
501 if (!reset) term->sco_acs = term->alt_sco_acs;
502 term->alt_sco_acs = t;
505 if (reset && term->screen) {
507 * Yes, this _is_ supposed to honour background-colour-erase.
509 erase_lots(term, FALSE, TRUE, TRUE);
513 * This might not be possible if we're called during
521 * Update the scroll bar.
523 static void update_sbar(Terminal *term)
527 nscroll = count234(term->scrollback);
529 set_sbar(nscroll + term->rows, nscroll + term->disptop, term->rows);
533 * Check whether the region bounded by the two pointers intersects
534 * the scroll region, and de-select the on-screen selection if so.
536 static void check_selection(Terminal *term, pos from, pos to)
538 if (poslt(from, term->selend) && poslt(term->selstart, to))
543 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
544 * for backward.) `sb' is TRUE if the scrolling is permitted to
545 * affect the scrollback buffer.
547 * NB this function invalidates all pointers into lines of the
548 * screen data structures. In particular, you MUST call fix_cpos
549 * after calling scroll() and before doing anything else that
550 * uses the cpos shortcut pointer.
552 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
554 unsigned long *line, *line2;
557 if (topline != 0 || term->alt_which != 0)
562 line = delpos234(term->screen, botline);
563 line = resizeline(line, term->cols);
564 for (i = 0; i < term->cols; i++)
565 line[i + 1] = term->erase_char;
566 line[term->cols + 1] = 0;
567 addpos234(term->screen, line, topline);
569 if (term->selstart.y >= topline && term->selstart.y <= botline) {
571 if (term->selstart.y > botline) {
572 term->selstart.y = botline;
573 term->selstart.x = 0;
576 if (term->selend.y >= topline && term->selend.y <= botline) {
578 if (term->selend.y > botline) {
579 term->selend.y = botline;
588 line = delpos234(term->screen, topline);
589 if (sb && term->savelines > 0) {
590 int sblen = count234(term->scrollback);
592 * We must add this line to the scrollback. We'll
593 * remove a line from the top of the scrollback to
594 * replace it, or allocate a new one if the
595 * scrollback isn't full.
597 if (sblen == term->savelines) {
598 sblen--, line2 = delpos234(term->scrollback, 0);
600 line2 = smalloc(TSIZE * (term->cols + 2));
601 line2[0] = term->cols;
603 addpos234(term->scrollback, line, sblen);
607 * If the user is currently looking at part of the
608 * scrollback, and they haven't enabled any options
609 * that are going to reset the scrollback as a
610 * result of this movement, then the chances are
611 * they'd like to keep looking at the same line. So
612 * we move their viewpoint at the same rate as the
613 * scroll, at least until their viewpoint hits the
614 * top end of the scrollback buffer, at which point
615 * we don't have the choice any more.
617 * Thanks to Jan Holmen Holsten for the idea and
618 * initial implementation.
620 if (term->disptop > -term->savelines && term->disptop < 0)
623 line = resizeline(line, term->cols);
624 for (i = 0; i < term->cols; i++)
625 line[i + 1] = term->erase_char;
626 line[term->cols + 1] = 0;
627 addpos234(term->screen, line, botline);
630 * If the selection endpoints move into the scrollback,
631 * we keep them moving until they hit the top. However,
632 * of course, if the line _hasn't_ moved into the
633 * scrollback then we don't do this, and cut them off
634 * at the top of the scroll region.
636 * This applies to selstart and selend (for an existing
637 * selection), and also selanchor (for one being
638 * selected as we speak).
640 seltop = sb ? -term->savelines : topline;
642 if (term->selstart.y >= seltop &&
643 term->selstart.y <= botline) {
645 if (term->selstart.y < seltop) {
646 term->selstart.y = seltop;
647 term->selstart.x = 0;
650 if (term->selend.y >= seltop && term->selend.y <= botline) {
652 if (term->selend.y < seltop) {
653 term->selend.y = seltop;
657 if (term->selanchor.y >= seltop && term->selanchor.y <= botline) {
659 if (term->selanchor.y < seltop) {
660 term->selanchor.y = seltop;
661 term->selanchor.x = 0;
671 * Move the cursor to a given position, clipping at boundaries. We
672 * may or may not want to clip at the scroll margin: marg_clip is 0
673 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
674 * even _being_ outside the margins.
676 static void move(Terminal *term, int x, int y, int marg_clip)
683 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
686 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
697 term->wrapnext = FALSE;
701 * Save or restore the cursor and SGR mode.
703 static void save_cursor(Terminal *term, int save)
706 term->savecurs = term->curs;
707 term->save_attr = term->curr_attr;
708 term->save_cset = term->cset;
709 term->save_utf = term->utf;
710 term->save_wnext = term->wrapnext;
711 term->save_csattr = term->cset_attr[term->cset];
712 term->save_sco_acs = term->sco_acs;
714 term->curs = term->savecurs;
715 /* Make sure the window hasn't shrunk since the save */
716 if (term->curs.x >= term->cols)
717 term->curs.x = term->cols - 1;
718 if (term->curs.y >= term->rows)
719 term->curs.y = term->rows - 1;
721 term->curr_attr = term->save_attr;
722 term->cset = term->save_cset;
723 term->utf = term->save_utf;
724 term->wrapnext = term->save_wnext;
726 * wrapnext might reset to False if the x position is no
727 * longer at the rightmost edge.
729 if (term->wrapnext && term->curs.x < term->cols-1)
730 term->wrapnext = FALSE;
731 term->cset_attr[term->cset] = term->save_csattr;
732 term->sco_acs = term->save_sco_acs;
735 term->erase_char = (' ' | ATTR_ASCII |
737 (ATTR_FGMASK | ATTR_BGMASK)));
742 * Erase a large portion of the screen: the whole screen, or the
743 * whole line, or parts thereof.
745 static void erase_lots(Terminal *term,
746 int line_only, int from_begin, int to_end)
750 unsigned long *ldata;
753 start.y = term->curs.y;
755 end.y = term->curs.y + 1;
772 check_selection(term, start, end);
774 /* Clear screen also forces a full window redraw, just in case. */
775 if (start.y == 0 && start.x == 0 && end.y == term->rows)
776 term_invalidate(term);
778 ldata = lineptr(start.y);
779 while (poslt(start, end)) {
780 if (start.x == term->cols && !erase_lattr)
781 ldata[start.x] &= ~LATTR_WRAPPED;
783 ldata[start.x] = term->erase_char;
784 if (incpos(start) && start.y < term->rows)
785 ldata = lineptr(start.y);
790 * Insert or delete characters within the current line. n is +ve if
791 * insertion is desired, and -ve for deletion.
793 static void insch(Terminal *term, int n)
795 int dir = (n < 0 ? -1 : +1);
798 unsigned long *ldata;
800 n = (n < 0 ? -n : n);
801 if (n > term->cols - term->curs.x)
802 n = term->cols - term->curs.x;
803 m = term->cols - term->curs.x - n;
804 cursplus.y = term->curs.y;
805 cursplus.x = term->curs.x + n;
806 check_selection(term, term->curs, cursplus);
807 ldata = lineptr(term->curs.y);
809 memmove(ldata + term->curs.x, ldata + term->curs.x + n, m * TSIZE);
811 ldata[term->curs.x + m++] = term->erase_char;
813 memmove(ldata + term->curs.x + n, ldata + term->curs.x, m * TSIZE);
815 ldata[term->curs.x + n] = term->erase_char;
820 * Toggle terminal mode `mode' to state `state'. (`query' indicates
821 * whether the mode is a DEC private one or a normal one.)
823 static void toggle_mode(Terminal *term, int mode, int query, int state)
829 case 1: /* application cursor keys */
830 term->app_cursor_keys = state;
832 case 2: /* VT52 mode */
833 term->vt52_mode = !state;
834 if (term->vt52_mode) {
835 term->blink_is_real = FALSE;
836 term->vt52_bold = FALSE;
838 term->blink_is_real = cfg.blinktext;
841 case 3: /* 80/132 columns */
843 if (!cfg.no_remote_resize)
844 request_resize(state ? 132 : 80, term->rows);
845 term->reset_132 = state;
847 case 5: /* reverse video */
849 * Toggle reverse video. If we receive an OFF within the
850 * visual bell timeout period after an ON, we trigger an
851 * effective visual bell, so that ESC[?5hESC[?5l will
852 * always be an actually _visible_ visual bell.
854 ticks = GETTICKCOUNT();
855 /* turn off a previous vbell to avoid inconsistencies */
856 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
857 term->in_vbell = FALSE;
858 if (term->rvideo && !state && /* we're turning it off... */
859 (ticks - term->rvbell_startpoint) < VBELL_TIMEOUT) {/*...soon*/
860 /* If there's no vbell timeout already, or this one lasts
861 * longer, replace vbell_timeout with ours. */
862 if (!term->in_vbell ||
863 (term->rvbell_startpoint - term->vbell_startpoint <
865 term->vbell_startpoint = term->rvbell_startpoint;
866 term->in_vbell = TRUE; /* may clear rvideo but set in_vbell */
867 } else if (!term->rvideo && state) {
868 /* This is an ON, so we notice the time and save it. */
869 term->rvbell_startpoint = ticks;
871 term->rvideo = state;
872 term->seen_disp_event = TRUE;
876 case 6: /* DEC origin mode */
877 term->dec_om = state;
879 case 7: /* auto wrap */
882 case 8: /* auto key repeat */
883 term->repeat_off = !state;
885 case 10: /* set local edit mode */
886 term->term_editing = state;
887 ldisc_send(NULL, 0, 0); /* cause ldisc to notice changes */
889 case 25: /* enable/disable cursor */
890 compatibility2(OTHER, VT220);
891 term->cursor_on = state;
892 term->seen_disp_event = TRUE;
894 case 47: /* alternate screen */
895 compatibility(OTHER);
897 swap_screen(term, cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
900 case 1000: /* xterm mouse 1 */
901 term->xterm_mouse = state ? 1 : 0;
902 set_raw_mouse_mode(state);
904 case 1002: /* xterm mouse 2 */
905 term->xterm_mouse = state ? 2 : 0;
906 set_raw_mouse_mode(state);
908 case 1047: /* alternate screen */
909 compatibility(OTHER);
911 swap_screen(term, cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
914 case 1048: /* save/restore cursor */
915 save_cursor(term, state);
916 if (!state) term->seen_disp_event = TRUE;
918 case 1049: /* cursor & alternate screen */
920 save_cursor(term, state);
921 if (!state) term->seen_disp_event = TRUE;
922 compatibility(OTHER);
924 swap_screen(term, cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
926 save_cursor(term, state);
931 case 4: /* set insert mode */
932 compatibility(VT102);
933 term->insert = state;
935 case 12: /* set echo mode */
936 term->term_echoing = !state;
937 ldisc_send(NULL, 0, 0); /* cause ldisc to notice changes */
939 case 20: /* Return sends ... */
940 term->cr_lf_return = state;
942 case 34: /* Make cursor BIG */
943 compatibility2(OTHER, VT220);
944 term->big_cursor = !state;
949 * Process an OSC sequence: set window title or icon name.
951 static void do_osc(Terminal *term)
954 while (term->osc_strlen--)
955 term->wordness[(unsigned char)
956 term->osc_string[term->osc_strlen]] = term->esc_args[0];
958 term->osc_string[term->osc_strlen] = '\0';
959 switch (term->esc_args[0]) {
962 if (!cfg.no_remote_wintitle)
963 set_icon(term->osc_string);
964 if (term->esc_args[0] == 1)
966 /* fall through: parameter 0 means set both */
969 if (!cfg.no_remote_wintitle)
970 set_title(term->osc_string);
977 * ANSI printing routines.
979 static void term_print_setup(Terminal *term)
981 bufchain_clear(&term->printer_buf);
982 term->print_job = printer_start_job(cfg.printer);
984 static void term_print_flush(Terminal *term)
989 while ((size = bufchain_size(&term->printer_buf)) > 5) {
990 bufchain_prefix(&term->printer_buf, &data, &len);
993 printer_job_data(term->print_job, data, len);
994 bufchain_consume(&term->printer_buf, len);
997 static void term_print_finish(Terminal *term)
1003 if (!term->printing && !term->only_printing)
1004 return; /* we need do nothing */
1006 term_print_flush(term);
1007 while ((size = bufchain_size(&term->printer_buf)) > 0) {
1008 bufchain_prefix(&term->printer_buf, &data, &len);
1010 if (c == '\033' || c == '\233') {
1011 bufchain_consume(&term->printer_buf, size);
1014 printer_job_data(term->print_job, &c, 1);
1015 bufchain_consume(&term->printer_buf, 1);
1018 printer_finish_job(term->print_job);
1019 term->print_job = NULL;
1020 term->printing = term->only_printing = FALSE;
1024 * Remove everything currently in `inbuf' and stick it up on the
1025 * in-memory display. There's a big state machine in here to
1026 * process escape sequences...
1028 void term_out(Terminal *term)
1031 unsigned char localbuf[256], *chars;
1036 chars = NULL; /* placate compiler warnings */
1037 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
1041 bufchain_prefix(&term->inbuf, &ret, &nchars);
1042 if (nchars > sizeof(localbuf))
1043 nchars = sizeof(localbuf);
1044 memcpy(localbuf, ret, nchars);
1045 bufchain_consume(&term->inbuf, nchars);
1047 assert(chars != NULL);
1053 * Optionally log the session traffic to a file. Useful for
1054 * debugging and possibly also useful for actual logging.
1056 if (cfg.logtype == LGTYP_DEBUG)
1057 logtraffic((unsigned char) c, LGTYP_DEBUG);
1063 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1064 * be able to display 8-bit characters, but I'll let that go 'cause
1069 * If we're printing, add the character to the printer
1072 if (term->printing) {
1073 bufchain_add(&term->printer_buf, &c, 1);
1076 * If we're in print-only mode, we use a much simpler
1077 * state machine designed only to recognise the ESC[4i
1078 * termination sequence.
1080 if (term->only_printing) {
1082 term->print_state = 1;
1083 else if (c == (unsigned char)'\233')
1084 term->print_state = 2;
1085 else if (c == '[' && term->print_state == 1)
1086 term->print_state = 2;
1087 else if (c == '4' && term->print_state == 2)
1088 term->print_state = 3;
1089 else if (c == 'i' && term->print_state == 3)
1090 term->print_state = 4;
1092 term->print_state = 0;
1093 if (term->print_state == 4) {
1094 term_print_finish(term);
1100 /* First see about all those translations. */
1101 if (term->termstate == TOPLEVEL) {
1103 switch (term->utf_state) {
1106 /* UTF-8 must be stateless so we ignore iso2022. */
1107 if (unitab_ctrl[c] != 0xFF)
1109 else c = ((unsigned char)c) | ATTR_ASCII;
1111 } else if ((c & 0xe0) == 0xc0) {
1112 term->utf_size = term->utf_state = 1;
1113 term->utf_char = (c & 0x1f);
1114 } else if ((c & 0xf0) == 0xe0) {
1115 term->utf_size = term->utf_state = 2;
1116 term->utf_char = (c & 0x0f);
1117 } else if ((c & 0xf8) == 0xf0) {
1118 term->utf_size = term->utf_state = 3;
1119 term->utf_char = (c & 0x07);
1120 } else if ((c & 0xfc) == 0xf8) {
1121 term->utf_size = term->utf_state = 4;
1122 term->utf_char = (c & 0x03);
1123 } else if ((c & 0xfe) == 0xfc) {
1124 term->utf_size = term->utf_state = 5;
1125 term->utf_char = (c & 0x01);
1136 if ((c & 0xC0) != 0x80) {
1139 term->utf_state = 0;
1142 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
1143 if (--term->utf_state)
1148 /* Is somebody trying to be evil! */
1150 (c < 0x800 && term->utf_size >= 2) ||
1151 (c < 0x10000 && term->utf_size >= 3) ||
1152 (c < 0x200000 && term->utf_size >= 4) ||
1153 (c < 0x4000000 && term->utf_size >= 5))
1156 /* Unicode line separator and paragraph separator are CR-LF */
1157 if (c == 0x2028 || c == 0x2029)
1160 /* High controls are probably a Baaad idea too. */
1164 /* The UTF-16 surrogates are not nice either. */
1165 /* The standard give the option of decoding these:
1166 * I don't want to! */
1167 if (c >= 0xD800 && c < 0xE000)
1170 /* ISO 10646 characters now limited to UTF-16 range. */
1174 /* This is currently a TagPhobic application.. */
1175 if (c >= 0xE0000 && c <= 0xE007F)
1178 /* U+FEFF is best seen as a null. */
1181 /* But U+FFFE is an error. */
1182 if (c == 0xFFFE || c == 0xFFFF)
1185 /* Oops this is a 16bit implementation */
1190 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
1191 else if(term->sco_acs &&
1192 (c!='\033' && c!='\n' && c!='\r' && c!='\b'))
1194 if (term->sco_acs == 2) c ^= 0x80;
1197 switch (term->cset_attr[term->cset]) {
1199 * Linedraw characters are different from 'ESC ( B'
1200 * only for a small range. For ones outside that
1201 * range, make sure we use the same font as well as
1202 * the same encoding.
1205 if (unitab_ctrl[c] != 0xFF)
1208 c = ((unsigned char) c) | ATTR_LINEDRW;
1212 /* If UK-ASCII, make the '#' a LineDraw Pound */
1214 c = '}' | ATTR_LINEDRW;
1217 /*FALLTHROUGH*/ case ATTR_ASCII:
1218 if (unitab_ctrl[c] != 0xFF)
1221 c = ((unsigned char) c) | ATTR_ASCII;
1224 if (c>=' ') c = ((unsigned char)c) | ATTR_SCOACS;
1230 /* How about C1 controls ? */
1231 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
1232 !term->vt52_mode && has_compat(VT220)) {
1233 term->termstate = SEEN_ESC;
1234 term->esc_query = FALSE;
1235 c = '@' + (c & 0x1F);
1238 /* Or the GL control. */
1239 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
1240 if (term->curs.x && !term->wrapnext)
1242 term->wrapnext = FALSE;
1244 if (!cfg.no_dbackspace) /* destructive bksp might be disabled */
1245 *term->cpos = (' ' | term->curr_attr | ATTR_ASCII);
1247 /* Or normal C0 controls. */
1248 if ((c & -32) == 0 && term->termstate < DO_CTRLS) {
1250 case '\005': /* terminal type query */
1251 /* Strictly speaking this is VT100 but a VT100 defaults to
1252 * no response. Other terminals respond at their option.
1254 * Don't put a CR in the default string as this tends to
1255 * upset some weird software.
1257 * An xterm returns "xterm" (5 characters)
1259 compatibility(ANSIMIN);
1261 char abuf[256], *s, *d;
1263 for (s = cfg.answerback, d = abuf; *s; s++) {
1265 if (*s >= 'a' && *s <= 'z')
1266 *d++ = (*s - ('a' - 1));
1267 else if ((*s >= '@' && *s <= '_') ||
1268 *s == '?' || (*s & 0x80))
1273 } else if (*s == '^') {
1278 lpage_send(DEFAULT_CODEPAGE, abuf, d - abuf, 0);
1283 struct beeptime *newbeep;
1284 unsigned long ticks;
1286 ticks = GETTICKCOUNT();
1288 if (!term->beep_overloaded) {
1289 newbeep = smalloc(sizeof(struct beeptime));
1290 newbeep->ticks = ticks;
1291 newbeep->next = NULL;
1292 if (!term->beephead)
1293 term->beephead = newbeep;
1295 term->beeptail->next = newbeep;
1296 term->beeptail = newbeep;
1301 * Throw out any beeps that happened more than
1304 while (term->beephead &&
1305 term->beephead->ticks < ticks - cfg.bellovl_t) {
1306 struct beeptime *tmp = term->beephead;
1307 term->beephead = tmp->next;
1309 if (!term->beephead)
1310 term->beeptail = NULL;
1314 if (cfg.bellovl && term->beep_overloaded &&
1315 ticks - term->lastbeep >= (unsigned)cfg.bellovl_s) {
1317 * If we're currently overloaded and the
1318 * last beep was more than s seconds ago,
1319 * leave overload mode.
1321 term->beep_overloaded = FALSE;
1322 } else if (cfg.bellovl && !term->beep_overloaded &&
1323 term->nbeeps >= cfg.bellovl_n) {
1325 * Now, if we have n or more beeps
1326 * remaining in the queue, go into overload
1329 term->beep_overloaded = TRUE;
1331 term->lastbeep = ticks;
1334 * Perform an actual beep if we're not overloaded.
1336 if (!cfg.bellovl || !term->beep_overloaded) {
1337 if (cfg.beep == BELL_VISUAL) {
1338 term->in_vbell = TRUE;
1339 term->vbell_startpoint = ticks;
1348 if (term->curs.x == 0 &&
1349 (term->curs.y == 0 || term->wrap == 0))
1351 else if (term->curs.x == 0 && term->curs.y > 0)
1352 term->curs.x = term->cols - 1, term->curs.y--;
1353 else if (term->wrapnext)
1354 term->wrapnext = FALSE;
1358 term->seen_disp_event = TRUE;
1361 compatibility(VT100);
1365 compatibility(VT100);
1369 if (term->vt52_mode)
1370 term->termstate = VT52_ESC;
1372 compatibility(ANSIMIN);
1373 term->termstate = SEEN_ESC;
1374 term->esc_query = FALSE;
1379 term->wrapnext = FALSE;
1381 term->seen_disp_event = TRUE;
1382 term->paste_hold = 0;
1383 logtraffic((unsigned char) c, LGTYP_ASCII);
1386 if (has_compat(SCOANSI)) {
1387 move(term, 0, 0, 0);
1388 erase_lots(term, FALSE, FALSE, TRUE);
1390 term->wrapnext = FALSE;
1391 term->seen_disp_event = 1;
1395 compatibility(VT100);
1397 if (term->curs.y == term->marg_b)
1398 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1399 else if (term->curs.y < term->rows - 1)
1404 term->wrapnext = FALSE;
1405 term->seen_disp_event = 1;
1406 term->paste_hold = 0;
1407 logtraffic((unsigned char) c, LGTYP_ASCII);
1411 pos old_curs = term->curs;
1412 unsigned long *ldata = lineptr(term->curs.y);
1416 } while (term->curs.x < term->cols - 1 &&
1417 !term->tabs[term->curs.x]);
1419 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM) {
1420 if (term->curs.x >= term->cols / 2)
1421 term->curs.x = term->cols / 2 - 1;
1423 if (term->curs.x >= term->cols)
1424 term->curs.x = term->cols - 1;
1428 check_selection(term, old_curs, term->curs);
1430 term->seen_disp_event = TRUE;
1434 switch (term->termstate) {
1436 /* Only graphic characters get this far;
1437 * ctrls are stripped above */
1438 if (term->wrapnext && term->wrap) {
1439 term->cpos[1] |= LATTR_WRAPPED;
1440 if (term->curs.y == term->marg_b)
1441 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1442 else if (term->curs.y < term->rows - 1)
1446 term->wrapnext = FALSE;
1450 if (term->selstate != NO_SELECTION) {
1451 pos cursplus = term->curs;
1453 check_selection(term, term->curs, cursplus);
1455 if ((c & CSET_MASK) == ATTR_ASCII || (c & CSET_MASK) == 0)
1456 logtraffic((unsigned char) c, LGTYP_ASCII);
1458 extern int wcwidth(wchar_t ucs);
1463 width = wcwidth((wchar_t) c);
1466 *term->cpos++ = c | term->curr_attr;
1467 if (++term->curs.x == term->cols) {
1468 *term->cpos |= LATTR_WRAPPED;
1469 if (term->curs.y == term->marg_b)
1470 scroll(term, term->marg_t, term->marg_b,
1472 else if (term->curs.y < term->rows - 1)
1477 *term->cpos++ = UCSWIDE | term->curr_attr;
1480 *term->cpos++ = c | term->curr_attr;
1487 if (term->curs.x == term->cols) {
1490 term->wrapnext = TRUE;
1491 if (term->wrap && term->vt52_mode) {
1492 term->cpos[1] |= LATTR_WRAPPED;
1493 if (term->curs.y == term->marg_b)
1494 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1495 else if (term->curs.y < term->rows - 1)
1499 term->wrapnext = FALSE;
1502 term->seen_disp_event = 1;
1507 * This state is virtually identical to SEEN_ESC, with the
1508 * exception that we have an OSC sequence in the pipeline,
1509 * and _if_ we see a backslash, we process it.
1513 term->termstate = TOPLEVEL;
1516 /* else fall through */
1518 if (c >= ' ' && c <= '/') {
1519 if (term->esc_query)
1520 term->esc_query = -1;
1522 term->esc_query = c;
1525 term->termstate = TOPLEVEL;
1526 switch (ANSI(c, term->esc_query)) {
1527 case '[': /* enter CSI mode */
1528 term->termstate = SEEN_CSI;
1529 term->esc_nargs = 1;
1530 term->esc_args[0] = ARG_DEFAULT;
1531 term->esc_query = FALSE;
1533 case ']': /* xterm escape sequences */
1534 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1535 compatibility(OTHER);
1536 term->termstate = SEEN_OSC;
1537 term->esc_args[0] = 0;
1539 case '7': /* save cursor */
1540 compatibility(VT100);
1541 save_cursor(term, TRUE);
1543 case '8': /* restore cursor */
1544 compatibility(VT100);
1545 save_cursor(term, FALSE);
1546 term->seen_disp_event = TRUE;
1549 compatibility(VT100);
1550 term->app_keypad_keys = TRUE;
1553 compatibility(VT100);
1554 term->app_keypad_keys = FALSE;
1556 case 'D': /* exactly equivalent to LF */
1557 compatibility(VT100);
1558 if (term->curs.y == term->marg_b)
1559 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1560 else if (term->curs.y < term->rows - 1)
1563 term->wrapnext = FALSE;
1564 term->seen_disp_event = TRUE;
1566 case 'E': /* exactly equivalent to CR-LF */
1567 compatibility(VT100);
1569 if (term->curs.y == term->marg_b)
1570 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1571 else if (term->curs.y < term->rows - 1)
1574 term->wrapnext = FALSE;
1575 term->seen_disp_event = TRUE;
1577 case 'M': /* reverse index - backwards LF */
1578 compatibility(VT100);
1579 if (term->curs.y == term->marg_t)
1580 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
1581 else if (term->curs.y > 0)
1584 term->wrapnext = FALSE;
1585 term->seen_disp_event = TRUE;
1587 case 'Z': /* terminal type query */
1588 compatibility(VT100);
1589 ldisc_send(term->id_string, strlen(term->id_string), 0);
1591 case 'c': /* restore power-on settings */
1592 compatibility(VT100);
1594 ldisc_send(NULL, 0, 0);/* cause ldisc to notice changes */
1595 if (term->reset_132) {
1596 if (!cfg.no_remote_resize)
1597 request_resize(80, term->rows);
1598 term->reset_132 = 0;
1602 term->seen_disp_event = TRUE;
1604 case 'H': /* set a tab */
1605 compatibility(VT100);
1606 term->tabs[term->curs.x] = TRUE;
1609 case ANSI('8', '#'): /* ESC # 8 fills screen with Es :-) */
1610 compatibility(VT100);
1612 unsigned long *ldata;
1616 for (i = 0; i < term->rows; i++) {
1618 for (j = 0; j < term->cols; j++)
1619 ldata[j] = ATTR_DEFAULT | 'E';
1620 ldata[term->cols] = 0;
1623 term->seen_disp_event = TRUE;
1624 scrtop.x = scrtop.y = 0;
1626 scrbot.y = term->rows;
1627 check_selection(term, scrtop, scrbot);
1631 case ANSI('3', '#'):
1632 case ANSI('4', '#'):
1633 case ANSI('5', '#'):
1634 case ANSI('6', '#'):
1635 compatibility(VT100);
1637 unsigned long nlattr;
1638 unsigned long *ldata;
1639 switch (ANSI(c, term->esc_query)) {
1640 case ANSI('3', '#'):
1643 case ANSI('4', '#'):
1646 case ANSI('5', '#'):
1647 nlattr = LATTR_NORM;
1649 default: /* spiritually case ANSI('6', '#'): */
1650 nlattr = LATTR_WIDE;
1653 ldata = lineptr(term->curs.y);
1654 ldata[term->cols] &= ~LATTR_MODE;
1655 ldata[term->cols] |= nlattr;
1659 case ANSI('A', '('):
1660 compatibility(VT100);
1661 if (!cfg.no_remote_charset)
1662 term->cset_attr[0] = ATTR_GBCHR;
1664 case ANSI('B', '('):
1665 compatibility(VT100);
1666 if (!cfg.no_remote_charset)
1667 term->cset_attr[0] = ATTR_ASCII;
1669 case ANSI('0', '('):
1670 compatibility(VT100);
1671 if (!cfg.no_remote_charset)
1672 term->cset_attr[0] = ATTR_LINEDRW;
1674 case ANSI('U', '('):
1675 compatibility(OTHER);
1676 if (!cfg.no_remote_charset)
1677 term->cset_attr[0] = ATTR_SCOACS;
1680 case ANSI('A', ')'):
1681 compatibility(VT100);
1682 if (!cfg.no_remote_charset)
1683 term->cset_attr[1] = ATTR_GBCHR;
1685 case ANSI('B', ')'):
1686 compatibility(VT100);
1687 if (!cfg.no_remote_charset)
1688 term->cset_attr[1] = ATTR_ASCII;
1690 case ANSI('0', ')'):
1691 compatibility(VT100);
1692 if (!cfg.no_remote_charset)
1693 term->cset_attr[1] = ATTR_LINEDRW;
1695 case ANSI('U', ')'):
1696 compatibility(OTHER);
1697 if (!cfg.no_remote_charset)
1698 term->cset_attr[1] = ATTR_SCOACS;
1701 case ANSI('8', '%'): /* Old Linux code */
1702 case ANSI('G', '%'):
1703 compatibility(OTHER);
1704 if (!cfg.no_remote_charset)
1707 case ANSI('@', '%'):
1708 compatibility(OTHER);
1709 if (!cfg.no_remote_charset)
1715 term->termstate = TOPLEVEL; /* default */
1717 if (term->esc_nargs <= ARGS_MAX) {
1718 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
1719 term->esc_args[term->esc_nargs - 1] = 0;
1720 term->esc_args[term->esc_nargs - 1] =
1721 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
1723 term->termstate = SEEN_CSI;
1724 } else if (c == ';') {
1725 if (++term->esc_nargs <= ARGS_MAX)
1726 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
1727 term->termstate = SEEN_CSI;
1728 } else if (c < '@') {
1729 if (term->esc_query)
1730 term->esc_query = -1;
1732 term->esc_query = TRUE;
1734 term->esc_query = c;
1735 term->termstate = SEEN_CSI;
1737 switch (ANSI(c, term->esc_query)) {
1738 case 'A': /* move up N lines */
1739 move(term, term->curs.x,
1740 term->curs.y - def(term->esc_args[0], 1), 1);
1741 term->seen_disp_event = TRUE;
1743 case 'e': /* move down N lines */
1744 compatibility(ANSI);
1747 move(term, term->curs.x,
1748 term->curs.y + def(term->esc_args[0], 1), 1);
1749 term->seen_disp_event = TRUE;
1751 case ANSI('c', '>'): /* report xterm version */
1752 compatibility(OTHER);
1753 /* this reports xterm version 136 so that VIM can
1754 use the drag messages from the mouse reporting */
1755 ldisc_send("\033[>0;136;0c", 11, 0);
1757 case 'a': /* move right N cols */
1758 compatibility(ANSI);
1761 move(term, term->curs.x + def(term->esc_args[0], 1),
1763 term->seen_disp_event = TRUE;
1765 case 'D': /* move left N cols */
1766 move(term, term->curs.x - def(term->esc_args[0], 1),
1768 term->seen_disp_event = TRUE;
1770 case 'E': /* move down N lines and CR */
1771 compatibility(ANSI);
1773 term->curs.y + def(term->esc_args[0], 1), 1);
1774 term->seen_disp_event = TRUE;
1776 case 'F': /* move up N lines and CR */
1777 compatibility(ANSI);
1779 term->curs.y - def(term->esc_args[0], 1), 1);
1780 term->seen_disp_event = TRUE;
1783 case '`': /* set horizontal posn */
1784 compatibility(ANSI);
1785 move(term, def(term->esc_args[0], 1) - 1,
1787 term->seen_disp_event = TRUE;
1789 case 'd': /* set vertical posn */
1790 compatibility(ANSI);
1791 move(term, term->curs.x,
1792 ((term->dec_om ? term->marg_t : 0) +
1793 def(term->esc_args[0], 1) - 1),
1794 (term->dec_om ? 2 : 0));
1795 term->seen_disp_event = TRUE;
1798 case 'f': /* set horz and vert posns at once */
1799 if (term->esc_nargs < 2)
1800 term->esc_args[1] = ARG_DEFAULT;
1801 move(term, def(term->esc_args[1], 1) - 1,
1802 ((term->dec_om ? term->marg_t : 0) +
1803 def(term->esc_args[0], 1) - 1),
1804 (term->dec_om ? 2 : 0));
1805 term->seen_disp_event = TRUE;
1807 case 'J': /* erase screen or parts of it */
1809 unsigned int i = def(term->esc_args[0], 0) + 1;
1812 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
1815 term->seen_disp_event = TRUE;
1817 case 'K': /* erase line or parts of it */
1819 unsigned int i = def(term->esc_args[0], 0) + 1;
1822 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
1824 term->seen_disp_event = TRUE;
1826 case 'L': /* insert lines */
1827 compatibility(VT102);
1828 if (term->curs.y <= term->marg_b)
1829 scroll(term, term->curs.y, term->marg_b,
1830 -def(term->esc_args[0], 1), FALSE);
1832 term->seen_disp_event = TRUE;
1834 case 'M': /* delete lines */
1835 compatibility(VT102);
1836 if (term->curs.y <= term->marg_b)
1837 scroll(term, term->curs.y, term->marg_b,
1838 def(term->esc_args[0], 1),
1841 term->seen_disp_event = TRUE;
1843 case '@': /* insert chars */
1844 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1845 compatibility(VT102);
1846 insch(term, def(term->esc_args[0], 1));
1847 term->seen_disp_event = TRUE;
1849 case 'P': /* delete chars */
1850 compatibility(VT102);
1851 insch(term, -def(term->esc_args[0], 1));
1852 term->seen_disp_event = TRUE;
1854 case 'c': /* terminal type query */
1855 compatibility(VT100);
1856 /* This is the response for a VT102 */
1857 ldisc_send(term->id_string,
1858 strlen(term->id_string), 0);
1860 case 'n': /* cursor position query */
1861 if (term->esc_args[0] == 6) {
1863 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
1865 ldisc_send(buf, strlen(buf), 0);
1866 } else if (term->esc_args[0] == 5) {
1867 ldisc_send("\033[0n", 4, 0);
1870 case 'h': /* toggle modes to high */
1872 compatibility(VT100);
1875 for (i = 0; i < term->esc_nargs; i++)
1876 toggle_mode(term, term->esc_args[i],
1877 term->esc_query, TRUE);
1882 compatibility(VT100);
1884 if (term->esc_nargs != 1) break;
1885 if (term->esc_args[0] == 5 && *cfg.printer) {
1886 term->printing = TRUE;
1887 term->only_printing = !term->esc_query;
1888 term->print_state = 0;
1889 term_print_setup(term);
1890 } else if (term->esc_args[0] == 4 &&
1892 term_print_finish(term);
1896 case 'l': /* toggle modes to low */
1898 compatibility(VT100);
1901 for (i = 0; i < term->esc_nargs; i++)
1902 toggle_mode(term, term->esc_args[i],
1903 term->esc_query, FALSE);
1906 case 'g': /* clear tabs */
1907 compatibility(VT100);
1908 if (term->esc_nargs == 1) {
1909 if (term->esc_args[0] == 0) {
1910 term->tabs[term->curs.x] = FALSE;
1911 } else if (term->esc_args[0] == 3) {
1913 for (i = 0; i < term->cols; i++)
1914 term->tabs[i] = FALSE;
1918 case 'r': /* set scroll margins */
1919 compatibility(VT100);
1920 if (term->esc_nargs <= 2) {
1922 top = def(term->esc_args[0], 1) - 1;
1923 bot = (term->esc_nargs <= 1
1924 || term->esc_args[1] == 0 ?
1926 def(term->esc_args[1], term->rows)) - 1;
1927 if (bot >= term->rows)
1928 bot = term->rows - 1;
1929 /* VTTEST Bug 9 - if region is less than 2 lines
1930 * don't change region.
1932 if (bot - top > 0) {
1937 * I used to think the cursor should be
1938 * placed at the top of the newly marginned
1939 * area. Apparently not: VMS TPU falls over
1942 * Well actually it should for
1945 term->curs.y = (term->dec_om ?
1948 term->seen_disp_event = TRUE;
1952 case 'm': /* set graphics rendition */
1955 * A VT100 without the AVO only had one
1956 * attribute, either underline or
1957 * reverse video depending on the
1958 * cursor type, this was selected by
1962 * This is sometimes DIM, eg on the
1965 * This is sometimes INVIS various ANSI.
1967 * This like 22 disables BOLD, DIM and INVIS
1969 * The ANSI colours appear on any
1970 * terminal that has colour (obviously)
1971 * but the interaction between sgr0 and
1972 * the colours varies but is usually
1973 * related to the background colour
1974 * erase item. The interaction between
1975 * colour attributes and the mono ones
1976 * is also very implementation
1979 * The 39 and 49 attributes are likely
1980 * to be unimplemented.
1983 for (i = 0; i < term->esc_nargs; i++) {
1984 switch (def(term->esc_args[i], 0)) {
1985 case 0: /* restore defaults */
1986 term->curr_attr = ATTR_DEFAULT;
1988 case 1: /* enable bold */
1989 compatibility(VT100AVO);
1990 term->curr_attr |= ATTR_BOLD;
1992 case 21: /* (enable double underline) */
1993 compatibility(OTHER);
1994 case 4: /* enable underline */
1995 compatibility(VT100AVO);
1996 term->curr_attr |= ATTR_UNDER;
1998 case 5: /* enable blink */
1999 compatibility(VT100AVO);
2000 term->curr_attr |= ATTR_BLINK;
2002 case 7: /* enable reverse video */
2003 term->curr_attr |= ATTR_REVERSE;
2005 case 10: /* SCO acs off */
2006 compatibility(SCOANSI);
2007 if (cfg.no_remote_charset) break;
2008 term->sco_acs = 0; break;
2009 case 11: /* SCO acs on */
2010 compatibility(SCOANSI);
2011 if (cfg.no_remote_charset) break;
2012 term->sco_acs = 1; break;
2013 case 12: /* SCO acs on flipped */
2014 compatibility(SCOANSI);
2015 if (cfg.no_remote_charset) break;
2016 term->sco_acs = 2; break;
2017 case 22: /* disable bold */
2018 compatibility2(OTHER, VT220);
2019 term->curr_attr &= ~ATTR_BOLD;
2021 case 24: /* disable underline */
2022 compatibility2(OTHER, VT220);
2023 term->curr_attr &= ~ATTR_UNDER;
2025 case 25: /* disable blink */
2026 compatibility2(OTHER, VT220);
2027 term->curr_attr &= ~ATTR_BLINK;
2029 case 27: /* disable reverse video */
2030 compatibility2(OTHER, VT220);
2031 term->curr_attr &= ~ATTR_REVERSE;
2042 term->curr_attr &= ~ATTR_FGMASK;
2044 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
2046 case 39: /* default-foreground */
2047 term->curr_attr &= ~ATTR_FGMASK;
2048 term->curr_attr |= ATTR_DEFFG;
2059 term->curr_attr &= ~ATTR_BGMASK;
2061 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
2063 case 49: /* default-background */
2064 term->curr_attr &= ~ATTR_BGMASK;
2065 term->curr_attr |= ATTR_DEFBG;
2070 term->erase_char = (' ' | ATTR_ASCII |
2076 case 's': /* save cursor */
2077 save_cursor(term, TRUE);
2079 case 'u': /* restore cursor */
2080 save_cursor(term, FALSE);
2081 term->seen_disp_event = TRUE;
2083 case 't': /* set page size - ie window height */
2085 * VT340/VT420 sequence DECSLPP, DEC only allows values
2086 * 24/25/36/48/72/144 other emulators (eg dtterm) use
2087 * illegal values (eg first arg 1..9) for window changing
2090 if (term->esc_nargs <= 1
2091 && (term->esc_args[0] < 1 ||
2092 term->esc_args[0] >= 24)) {
2093 compatibility(VT340TEXT);
2094 if (!cfg.no_remote_resize)
2095 request_resize(term->cols,
2096 def(term->esc_args[0], 24));
2098 } else if (term->esc_nargs >= 1 &&
2099 term->esc_args[0] >= 1 &&
2100 term->esc_args[0] < 24) {
2101 compatibility(OTHER);
2103 switch (term->esc_args[0]) {
2113 if (term->esc_nargs >= 3) {
2114 if (!cfg.no_remote_resize)
2115 move_window(def(term->esc_args[1], 0),
2116 def(term->esc_args[2], 0));
2120 /* We should resize the window to a given
2121 * size in pixels here, but currently our
2122 * resizing code isn't healthy enough to
2126 set_zorder(TRUE); /* move to top */
2129 set_zorder(FALSE); /* move to bottom */
2135 if (term->esc_nargs >= 3) {
2136 if (!cfg.no_remote_resize)
2137 request_resize(def(term->esc_args[2], cfg.width),
2138 def(term->esc_args[1], cfg.height));
2142 if (term->esc_nargs >= 2)
2143 set_zoomed(term->esc_args[1] ?
2147 ldisc_send(is_iconic() ? "\033[1t" : "\033[2t",
2151 get_window_pos(&x, &y);
2152 len = sprintf(buf, "\033[3;%d;%dt", x, y);
2153 ldisc_send(buf, len, 0);
2156 get_window_pixels(&x, &y);
2157 len = sprintf(buf, "\033[4;%d;%dt", x, y);
2158 ldisc_send(buf, len, 0);
2161 len = sprintf(buf, "\033[8;%d;%dt",
2162 term->rows, term->cols);
2163 ldisc_send(buf, len, 0);
2167 * Hmmm. Strictly speaking we
2168 * should return `the size of the
2169 * screen in characters', but
2170 * that's not easy: (a) window
2171 * furniture being what it is it's
2172 * hard to compute, and (b) in
2173 * resize-font mode maximising the
2174 * window wouldn't change the
2175 * number of characters. *shrug*. I
2176 * think we'll ignore it for the
2177 * moment and see if anyone
2178 * complains, and then ask them
2179 * what they would like it to do.
2183 p = get_window_title(TRUE);
2185 ldisc_send("\033]L", 3, 0);
2186 ldisc_send(p, len, 0);
2187 ldisc_send("\033\\", 2, 0);
2190 p = get_window_title(FALSE);
2192 ldisc_send("\033]l", 3, 0);
2193 ldisc_send(p, len, 0);
2194 ldisc_send("\033\\", 2, 0);
2200 compatibility(SCOANSI);
2201 scroll(term, term->marg_t, term->marg_b,
2202 def(term->esc_args[0], 1), TRUE);
2204 term->wrapnext = FALSE;
2205 term->seen_disp_event = TRUE;
2208 compatibility(SCOANSI);
2209 scroll(term, term->marg_t, term->marg_b,
2210 -def(term->esc_args[0], 1), TRUE);
2212 term->wrapnext = FALSE;
2213 term->seen_disp_event = TRUE;
2215 case ANSI('|', '*'):
2216 /* VT420 sequence DECSNLS
2217 * Set number of lines on screen
2218 * VT420 uses VGA like hardware and can support any size in
2219 * reasonable range (24..49 AIUI) with no default specified.
2221 compatibility(VT420);
2222 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
2223 if (!cfg.no_remote_resize)
2224 request_resize(term->cols,
2225 def(term->esc_args[0],
2230 case ANSI('|', '$'):
2231 /* VT340/VT420 sequence DECSCPP
2232 * Set number of columns per page
2233 * Docs imply range is only 80 or 132, but I'll allow any.
2235 compatibility(VT340TEXT);
2236 if (term->esc_nargs <= 1) {
2237 if (!cfg.no_remote_resize)
2238 request_resize(def(term->esc_args[0],
2239 cfg.width), term->rows);
2243 case 'X': /* write N spaces w/o moving cursor */
2244 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
2245 compatibility(ANSIMIN);
2247 int n = def(term->esc_args[0], 1);
2249 unsigned long *p = term->cpos;
2250 if (n > term->cols - term->curs.x)
2251 n = term->cols - term->curs.x;
2252 cursplus = term->curs;
2254 check_selection(term, term->curs, cursplus);
2256 *p++ = term->erase_char;
2257 term->seen_disp_event = TRUE;
2260 case 'x': /* report terminal characteristics */
2261 compatibility(VT100);
2264 int i = def(term->esc_args[0], 0);
2265 if (i == 0 || i == 1) {
2266 strcpy(buf, "\033[2;1;1;112;112;1;0x");
2268 ldisc_send(buf, 20, 0);
2272 case 'Z': /* BackTab for xterm */
2273 compatibility(OTHER);
2275 int i = def(term->esc_args[0], 1);
2276 pos old_curs = term->curs;
2278 for(;i>0 && term->curs.x>0; i--) {
2281 } while (term->curs.x >0 &&
2282 !term->tabs[term->curs.x]);
2285 check_selection(term, old_curs, term->curs);
2288 case ANSI('L', '='):
2289 compatibility(OTHER);
2290 term->use_bce = (term->esc_args[0] <= 0);
2291 term->erase_char = ERASE_CHAR;
2293 term->erase_char = (' ' | ATTR_ASCII |
2295 (ATTR_FGMASK | ATTR_BGMASK)));
2297 case ANSI('E', '='):
2298 compatibility(OTHER);
2299 term->blink_is_real = (term->esc_args[0] >= 1);
2301 case ANSI('p', '"'):
2303 * Allow the host to make this emulator a
2304 * 'perfect' VT102. This first appeared in
2305 * the VT220, but we do need to get back to
2306 * PuTTY mode so I won't check it.
2308 * The arg in 40..42,50 are a PuTTY extension.
2309 * The 2nd arg, 8bit vs 7bit is not checked.
2311 * Setting VT102 mode should also change
2312 * the Fkeys to generate PF* codes as a
2313 * real VT102 has no Fkeys. The VT220 does
2314 * this, F11..F13 become ESC,BS,LF other
2315 * Fkeys send nothing.
2317 * Note ESC c will NOT change this!
2320 switch (term->esc_args[0]) {
2322 term->compatibility_level &= ~TM_VTXXX;
2323 term->compatibility_level |= TM_VT102;
2326 term->compatibility_level &= ~TM_VTXXX;
2327 term->compatibility_level |= TM_VT220;
2331 if (term->esc_args[0] > 60 &&
2332 term->esc_args[0] < 70)
2333 term->compatibility_level |= TM_VTXXX;
2337 term->compatibility_level &= TM_VTXXX;
2340 term->compatibility_level = TM_PUTTY;
2343 term->compatibility_level = TM_SCOANSI;
2347 term->compatibility_level = TM_PUTTY;
2353 /* Change the response to CSI c */
2354 if (term->esc_args[0] == 50) {
2357 strcpy(term->id_string, "\033[?");
2358 for (i = 1; i < term->esc_nargs; i++) {
2360 strcat(term->id_string, ";");
2361 sprintf(lbuf, "%d", term->esc_args[i]);
2362 strcat(term->id_string, lbuf);
2364 strcat(term->id_string, "c");
2367 /* Is this a good idea ?
2368 * Well we should do a soft reset at this point ...
2370 if (!has_compat(VT420) && has_compat(VT100)) {
2371 if (!cfg.no_remote_resize) {
2372 if (term->reset_132)
2373 request_resize(132, 24);
2375 request_resize(80, 24);
2383 term->osc_w = FALSE;
2385 case 'P': /* Linux palette sequence */
2386 term->termstate = SEEN_OSC_P;
2387 term->osc_strlen = 0;
2389 case 'R': /* Linux palette reset */
2391 term_invalidate(term);
2392 term->termstate = TOPLEVEL;
2394 case 'W': /* word-set */
2395 term->termstate = SEEN_OSC_W;
2408 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
2412 * Grotty hack to support xterm and DECterm title
2413 * sequences concurrently.
2415 if (term->esc_args[0] == 2) {
2416 term->esc_args[0] = 1;
2419 /* else fall through */
2421 term->termstate = OSC_STRING;
2422 term->osc_strlen = 0;
2427 * This OSC stuff is EVIL. It takes just one character to get into
2428 * sysline mode and it's not initially obvious how to get out.
2429 * So I've added CR and LF as string aborts.
2430 * This shouldn't effect compatibility as I believe embedded
2431 * control characters are supposed to be interpreted (maybe?)
2432 * and they don't display anything useful anyway.
2436 if (c == '\n' || c == '\r') {
2437 term->termstate = TOPLEVEL;
2438 } else if (c == 0234 || c == '\007') {
2440 * These characters terminate the string; ST and BEL
2441 * terminate the sequence and trigger instant
2442 * processing of it, whereas ESC goes back to SEEN_ESC
2443 * mode unless it is followed by \, in which case it is
2444 * synonymous with ST in the first place.
2447 term->termstate = TOPLEVEL;
2448 } else if (c == '\033')
2449 term->termstate = OSC_MAYBE_ST;
2450 else if (term->osc_strlen < OSC_STR_MAX)
2451 term->osc_string[term->osc_strlen++] = c;
2455 int max = (term->osc_strlen == 0 ? 21 : 16);
2457 if (c >= '0' && c <= '9')
2459 else if (c >= 'A' && c <= 'A' + max - 10)
2461 else if (c >= 'a' && c <= 'a' + max - 10)
2464 term->termstate = TOPLEVEL;
2467 term->osc_string[term->osc_strlen++] = val;
2468 if (term->osc_strlen >= 7) {
2469 palette_set(term->osc_string[0],
2470 term->osc_string[1] * 16 + term->osc_string[2],
2471 term->osc_string[3] * 16 + term->osc_string[4],
2472 term->osc_string[5] * 16 + term->osc_string[6]);
2473 term_invalidate(term);
2474 term->termstate = TOPLEVEL;
2490 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
2493 term->termstate = OSC_STRING;
2494 term->osc_strlen = 0;
2498 term->termstate = TOPLEVEL;
2499 term->seen_disp_event = TRUE;
2502 move(term, term->curs.x, term->curs.y - 1, 1);
2505 move(term, term->curs.x, term->curs.y + 1, 1);
2508 move(term, term->curs.x + 1, term->curs.y, 1);
2511 move(term, term->curs.x - 1, term->curs.y, 1);
2514 * From the VT100 Manual
2515 * NOTE: The special graphics characters in the VT100
2516 * are different from those in the VT52
2518 * From VT102 manual:
2519 * 137 _ Blank - Same
2520 * 140 ` Reserved - Humm.
2521 * 141 a Solid rectangle - Similar
2522 * 142 b 1/ - Top half of fraction for the
2523 * 143 c 3/ - subscript numbers below.
2526 * 146 f Degrees - Same
2527 * 147 g Plus or minus - Same
2529 * 151 i Ellipsis (dots)
2532 * 154 l Bar at scan 0
2533 * 155 m Bar at scan 1
2534 * 156 n Bar at scan 2
2535 * 157 o Bar at scan 3 - Similar
2536 * 160 p Bar at scan 4 - Similar
2537 * 161 q Bar at scan 5 - Similar
2538 * 162 r Bar at scan 6 - Same
2539 * 163 s Bar at scan 7 - Similar
2554 term->cset_attr[term->cset = 0] = ATTR_LINEDRW;
2557 term->cset_attr[term->cset = 0] = ATTR_ASCII;
2560 move(term, 0, 0, 0);
2563 if (term->curs.y == 0)
2564 scroll(term, 0, term->rows - 1, -1, TRUE);
2565 else if (term->curs.y > 0)
2568 term->wrapnext = FALSE;
2571 erase_lots(term, FALSE, FALSE, TRUE);
2575 erase_lots(term, TRUE, FALSE, TRUE);
2579 /* XXX Print cursor line */
2582 /* XXX Start controller mode */
2585 /* XXX Stop controller mode */
2589 term->termstate = VT52_Y1;
2592 ldisc_send("\033/Z", 3, 0);
2595 term->app_keypad_keys = TRUE;
2598 term->app_keypad_keys = FALSE;
2601 /* XXX This should switch to VT100 mode not current or default
2602 * VT mode. But this will only have effect in a VT220+
2605 term->vt52_mode = FALSE;
2606 term->blink_is_real = cfg.blinktext;
2610 /* XXX Enter auto print mode */
2613 /* XXX Exit auto print mode */
2616 /* XXX Print screen */
2622 /* compatibility(ATARI) */
2623 move(term, 0, 0, 0);
2624 erase_lots(term, FALSE, FALSE, TRUE);
2628 /* compatibility(ATARI) */
2629 if (term->curs.y <= term->marg_b)
2630 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
2633 /* compatibility(ATARI) */
2634 if (term->curs.y <= term->marg_b)
2635 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
2638 /* compatibility(ATARI) */
2639 term->termstate = VT52_FG;
2642 /* compatibility(ATARI) */
2643 term->termstate = VT52_BG;
2646 /* compatibility(ATARI) */
2647 erase_lots(term, FALSE, TRUE, FALSE);
2651 /* compatibility(ATARI) */
2652 term->cursor_on = TRUE;
2655 /* compatibility(ATARI) */
2656 term->cursor_on = FALSE;
2658 /* case 'j': Save cursor position - broken on ST */
2659 /* case 'k': Restore cursor position */
2661 /* compatibility(ATARI) */
2662 erase_lots(term, TRUE, TRUE, TRUE);
2664 term->wrapnext = FALSE;
2668 /* compatibility(ATARI) */
2669 erase_lots(term, TRUE, TRUE, FALSE);
2672 /* compatibility(ATARI) */
2673 term->curr_attr |= ATTR_REVERSE;
2676 /* compatibility(ATARI) */
2677 term->curr_attr &= ~ATTR_REVERSE;
2679 case 'v': /* wrap Autowrap on - Wyse style */
2680 /* compatibility(ATARI) */
2683 case 'w': /* Autowrap off */
2684 /* compatibility(ATARI) */
2689 /* compatibility(OTHER) */
2690 term->vt52_bold = FALSE;
2691 term->curr_attr = ATTR_DEFAULT;
2693 term->erase_char = (' ' | ATTR_ASCII |
2695 (ATTR_FGMASK | ATTR_BGMASK)));
2698 /* compatibility(VI50) */
2699 term->curr_attr |= ATTR_UNDER;
2702 /* compatibility(VI50) */
2703 term->curr_attr &= ~ATTR_UNDER;
2706 /* compatibility(VI50) */
2707 term->vt52_bold = TRUE;
2708 term->curr_attr |= ATTR_BOLD;
2711 /* compatibility(VI50) */
2712 term->vt52_bold = FALSE;
2713 term->curr_attr &= ~ATTR_BOLD;
2719 term->termstate = VT52_Y2;
2720 move(term, term->curs.x, c - ' ', 0);
2723 term->termstate = TOPLEVEL;
2724 move(term, c - ' ', term->curs.y, 0);
2729 term->termstate = TOPLEVEL;
2730 term->curr_attr &= ~ATTR_FGMASK;
2731 term->curr_attr &= ~ATTR_BOLD;
2732 term->curr_attr |= (c & 0x7) << ATTR_FGSHIFT;
2733 if ((c & 0x8) || term->vt52_bold)
2734 term->curr_attr |= ATTR_BOLD;
2737 term->erase_char = (' ' | ATTR_ASCII |
2739 (ATTR_FGMASK | ATTR_BGMASK)));
2742 term->termstate = TOPLEVEL;
2743 term->curr_attr &= ~ATTR_BGMASK;
2744 term->curr_attr &= ~ATTR_BLINK;
2745 term->curr_attr |= (c & 0x7) << ATTR_BGSHIFT;
2747 /* Note: bold background */
2749 term->curr_attr |= ATTR_BLINK;
2752 term->erase_char = (' ' | ATTR_ASCII |
2754 (ATTR_FGMASK | ATTR_BGMASK)));
2757 default: break; /* placate gcc warning about enum use */
2759 if (term->selstate != NO_SELECTION) {
2760 pos cursplus = term->curs;
2762 check_selection(term, term->curs, cursplus);
2766 term_print_flush(term);
2771 * Compare two lines to determine whether they are sufficiently
2772 * alike to scroll-optimise one to the other. Return the degree of
2775 static int linecmp(Terminal *term, unsigned long *a, unsigned long *b)
2779 for (i = n = 0; i < term->cols; i++)
2780 n += (*a++ == *b++);
2786 * Given a context, update the window. Out of paranoia, we don't
2787 * allow WM_PAINT responses to do scrolling optimisations.
2789 static void do_paint(Terminal *term, Context ctx, int may_optimise)
2791 int i, j, our_curs_y;
2792 unsigned long rv, cursor;
2795 long cursor_background = ERASE_CHAR;
2796 unsigned long ticks;
2799 * Check the visual bell state.
2801 if (term->in_vbell) {
2802 ticks = GETTICKCOUNT();
2803 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
2804 term->in_vbell = FALSE;
2807 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
2810 * screen array, disptop, scrtop,
2812 * cfg.blinkpc, blink_is_real, tblinker,
2813 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
2816 /* Has the cursor position or type changed ? */
2817 if (term->cursor_on) {
2818 if (term->has_focus) {
2819 if (term->blinker || !cfg.blink_cur)
2820 cursor = TATTR_ACTCURS;
2824 cursor = TATTR_PASCURS;
2826 cursor |= TATTR_RIGHTCURS;
2829 our_curs_y = term->curs.y - term->disptop;
2831 if (term->dispcurs && (term->curstype != cursor ||
2833 term->disptext + our_curs_y * (term->cols + 1) +
2835 if (term->dispcurs > term->disptext &&
2836 (*term->dispcurs & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
2837 term->dispcurs[-1] |= ATTR_INVALID;
2838 if ( (term->dispcurs[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
2839 term->dispcurs[1] |= ATTR_INVALID;
2840 *term->dispcurs |= ATTR_INVALID;
2843 term->dispcurs = NULL;
2845 /* The normal screen data */
2846 for (i = 0; i < term->rows; i++) {
2847 unsigned long *ldata;
2849 int idx, dirty_line, dirty_run, selected;
2850 unsigned long attr = 0;
2851 int updated_line = 0;
2854 int last_run_dirty = 0;
2856 scrpos.y = i + term->disptop;
2857 ldata = lineptr(scrpos.y);
2858 lattr = (ldata[term->cols] & LATTR_MODE);
2860 idx = i * (term->cols + 1);
2861 dirty_run = dirty_line = (ldata[term->cols] !=
2862 term->disptext[idx + term->cols]);
2863 term->disptext[idx + term->cols] = ldata[term->cols];
2865 for (j = 0; j < term->cols; j++, idx++) {
2866 unsigned long tattr, tchar;
2867 unsigned long *d = ldata + j;
2871 tchar = (*d & (CHAR_MASK | CSET_MASK));
2872 tattr = (*d & (ATTR_MASK ^ CSET_MASK));
2873 switch (tchar & CSET_MASK) {
2875 tchar = unitab_line[tchar & 0xFF];
2878 tchar = unitab_xterm[tchar & 0xFF];
2881 tchar = unitab_scoacs[tchar&0xFF];
2884 tattr |= (tchar & CSET_MASK);
2886 if ((d[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
2889 /* Video reversing things */
2890 if (term->seltype == LEXICOGRAPHIC)
2891 selected = (posle(term->selstart, scrpos) &&
2892 poslt(scrpos, term->selend));
2894 selected = (posPle(term->selstart, scrpos) &&
2895 posPlt(scrpos, term->selend));
2897 ^ (selected ? ATTR_REVERSE : 0));
2899 /* 'Real' blinking ? */
2900 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
2901 if (term->has_focus && term->tblinker) {
2903 tattr &= ~CSET_MASK;
2906 tattr &= ~ATTR_BLINK;
2910 * Check the font we'll _probably_ be using to see if
2911 * the character is wide when we don't want it to be.
2913 if ((tchar | tattr) != (term->disptext[idx]& ~ATTR_NARROW)) {
2914 if ((tattr & ATTR_WIDE) == 0 &&
2915 CharWidth(ctx, (tchar | tattr) & 0xFFFF) == 2)
2916 tattr |= ATTR_NARROW;
2917 } else if (term->disptext[idx]&ATTR_NARROW)
2918 tattr |= ATTR_NARROW;
2920 /* Cursor here ? Save the 'background' */
2921 if (i == our_curs_y && j == term->curs.x) {
2922 cursor_background = tattr | tchar;
2923 term->dispcurs = term->disptext + idx;
2926 if ((term->disptext[idx] ^ tattr) & ATTR_WIDE)
2929 break_run = (tattr != attr || j - start >= sizeof(ch));
2931 /* Special hack for VT100 Linedraw glyphs */
2932 if ((attr & CSET_MASK) == 0x2300 && tchar >= 0xBA
2933 && tchar <= 0xBD) break_run = TRUE;
2935 if (!dbcs_screenfont && !dirty_line) {
2936 if ((tchar | tattr) == term->disptext[idx])
2938 else if (!dirty_run && ccount == 1)
2943 if ((dirty_run || last_run_dirty) && ccount > 0) {
2944 do_text(ctx, start, i, ch, ccount, attr, lattr);
2950 if (dbcs_screenfont)
2951 last_run_dirty = dirty_run;
2952 dirty_run = dirty_line;
2955 if ((tchar | tattr) != term->disptext[idx])
2957 ch[ccount++] = (char) tchar;
2958 term->disptext[idx] = tchar | tattr;
2960 /* If it's a wide char step along to the next one. */
2961 if (tattr & ATTR_WIDE) {
2962 if (++j < term->cols) {
2965 /* Cursor is here ? Ouch! */
2966 if (i == our_curs_y && j == term->curs.x) {
2967 cursor_background = *d;
2968 term->dispcurs = term->disptext + idx;
2970 if (term->disptext[idx] != *d)
2972 term->disptext[idx] = *d;
2976 if (dirty_run && ccount > 0) {
2977 do_text(ctx, start, i, ch, ccount, attr, lattr);
2981 /* Cursor on this line ? (and changed) */
2982 if (i == our_curs_y && (term->curstype != cursor || updated_line)) {
2983 ch[0] = (char) (cursor_background & CHAR_MASK);
2984 attr = (cursor_background & ATTR_MASK) | cursor;
2985 do_cursor(ctx, term->curs.x, i, ch, 1, attr, lattr);
2986 term->curstype = cursor;
2992 * Flick the switch that says if blinking things should be shown or hidden.
2995 void term_blink(Terminal *term, int flg)
2997 long now, blink_diff;
2999 now = GETTICKCOUNT();
3000 blink_diff = now - term->last_tblink;
3002 /* Make sure the text blinks no more than 2Hz; we'll use 0.45 s period. */
3003 if (blink_diff < 0 || blink_diff > (TICKSPERSEC * 9 / 20)) {
3004 term->last_tblink = now;
3005 term->tblinker = !term->tblinker;
3010 term->last_blink = now;
3014 blink_diff = now - term->last_blink;
3016 /* Make sure the cursor blinks no faster than system blink rate */
3017 if (blink_diff >= 0 && blink_diff < (long) CURSORBLINK)
3020 term->last_blink = now;
3021 term->blinker = !term->blinker;
3025 * Invalidate the whole screen so it will be repainted in full.
3027 void term_invalidate(Terminal *term)
3031 for (i = 0; i < term->rows * (term->cols + 1); i++)
3032 term->disptext[i] = ATTR_INVALID;
3036 * Paint the window in response to a WM_PAINT message.
3038 void term_paint(Terminal *term, Context ctx,
3039 int left, int top, int right, int bottom)
3042 if (left < 0) left = 0;
3043 if (top < 0) top = 0;
3044 if (right >= term->cols) right = term->cols-1;
3045 if (bottom >= term->rows) bottom = term->rows-1;
3047 for (i = top; i <= bottom && i < term->rows; i++) {
3048 if ((term->disptext[i * (term->cols + 1) + term->cols] &
3049 LATTR_MODE) == LATTR_NORM)
3050 for (j = left; j <= right && j < term->cols; j++)
3051 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
3053 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
3054 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
3057 /* This should happen soon enough, also for some reason it sometimes
3058 * fails to actually do anything when re-sizing ... painting the wrong
3062 do_paint (term, ctx, FALSE);
3066 * Attempt to scroll the scrollback. The second parameter gives the
3067 * position we want to scroll to; the first is +1 to denote that
3068 * this position is relative to the beginning of the scrollback, -1
3069 * to denote it is relative to the end, and 0 to denote that it is
3070 * relative to the current position.
3072 void term_scroll(Terminal *term, int rel, int where)
3074 int sbtop = -count234(term->scrollback);
3076 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
3077 if (term->disptop < sbtop)
3078 term->disptop = sbtop;
3079 if (term->disptop > 0)
3085 static void clipme(Terminal *term, pos top, pos bottom, int rect)
3088 wchar_t *wbptr; /* where next char goes within workbuf */
3090 int wblen = 0; /* workbuf len */
3091 int buflen; /* amount of memory allocated to workbuf */
3093 buflen = 5120; /* Default size */
3094 workbuf = smalloc(buflen * sizeof(wchar_t));
3095 wbptr = workbuf; /* start filling here */
3096 old_top_x = top.x; /* needed for rect==1 */
3098 while (poslt(top, bottom)) {
3100 unsigned long *ldata = lineptr(top.y);
3104 * nlpos will point at the maximum position on this line we
3105 * should copy up to. So we start it at the end of the
3109 nlpos.x = term->cols;
3112 * ... move it backwards if there's unused space at the end
3113 * of the line (and also set `nl' if this is the case,
3114 * because in normal selection mode this means we need a
3115 * newline at the end)...
3117 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3118 while (((ldata[nlpos.x - 1] & 0xFF) == 0x20 ||
3119 (DIRECT_CHAR(ldata[nlpos.x - 1]) &&
3120 (ldata[nlpos.x - 1] & CHAR_MASK) == 0x20))
3121 && poslt(top, nlpos))
3123 if (poslt(nlpos, bottom))
3128 * ... and then clip it to the terminal x coordinate if
3129 * we're doing rectangular selection. (In this case we
3130 * still did the above, so that copying e.g. the right-hand
3131 * column from a table doesn't fill with spaces on the
3135 if (nlpos.x > bottom.x)
3137 nl = (top.y < bottom.y);
3140 while (poslt(top, bottom) && poslt(top, nlpos)) {
3143 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
3145 wchar_t cbuf[16], *p;
3146 int uc = (ldata[top.x] & 0xFFFF);
3149 if (uc == UCSWIDE) {
3154 switch (uc & CSET_MASK) {
3157 uc = unitab_xterm[uc & 0xFF];
3161 uc = unitab_line[uc & 0xFF];
3164 uc = unitab_scoacs[uc&0xFF];
3167 switch (uc & CSET_MASK) {
3169 uc = unitab_font[uc & 0xFF];
3172 uc = unitab_oemcp[uc & 0xFF];
3176 set = (uc & CSET_MASK);
3177 c = (uc & CHAR_MASK);
3181 if (DIRECT_FONT(uc)) {
3182 if (c >= ' ' && c != 0x7F) {
3183 unsigned char buf[4];
3186 if (is_dbcs_leadbyte(font_codepage, (BYTE) c)) {
3188 buf[1] = (unsigned char) ldata[top.x + 1];
3189 rv = mb_to_wc(font_codepage, 0, buf, 2, wbuf, 4);
3193 rv = mb_to_wc(font_codepage, 0, buf, 1, wbuf, 4);
3197 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
3204 for (p = cbuf; *p; p++) {
3205 /* Enough overhead for trailing NL and nul */
3206 if (wblen >= buflen - 16) {
3209 sizeof(wchar_t) * (buflen += 100));
3210 wbptr = workbuf + wblen;
3219 for (i = 0; i < sel_nl_sz; i++) {
3221 *wbptr++ = sel_nl[i];
3225 top.x = rect ? old_top_x : 0;
3227 #if SELECTION_NUL_TERMINATED
3231 write_clip(workbuf, wblen, FALSE); /* transfer to clipboard */
3232 if (buflen > 0) /* indicates we allocated this buffer */
3236 void term_copyall(Terminal *term)
3239 top.y = -count234(term->scrollback);
3241 clipme(term, top, term->curs, 0);
3245 * The wordness array is mainly for deciding the disposition of the
3246 * US-ASCII characters.
3248 static int wordtype(Terminal *term, int uc)
3251 int start, end, ctype;
3252 } *wptr, ucs_words[] = {
3258 0x037e, 0x037e, 1}, /* Greek question mark */
3260 0x0387, 0x0387, 1}, /* Greek ano teleia */
3262 0x055a, 0x055f, 1}, /* Armenian punctuation */
3264 0x0589, 0x0589, 1}, /* Armenian full stop */
3266 0x0700, 0x070d, 1}, /* Syriac punctuation */
3268 0x104a, 0x104f, 1}, /* Myanmar punctuation */
3270 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
3272 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
3274 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
3276 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
3278 0x1800, 0x180a, 1}, /* Mongolian punctuation */
3280 0x2000, 0x200a, 0}, /* Various spaces */
3282 0x2070, 0x207f, 2}, /* superscript */
3284 0x2080, 0x208f, 2}, /* subscript */
3286 0x200b, 0x27ff, 1}, /* punctuation and symbols */
3288 0x3000, 0x3000, 0}, /* ideographic space */
3290 0x3001, 0x3020, 1}, /* ideographic punctuation */
3292 0x303f, 0x309f, 3}, /* Hiragana */
3294 0x30a0, 0x30ff, 3}, /* Katakana */
3296 0x3300, 0x9fff, 3}, /* CJK Ideographs */
3298 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
3300 0xf900, 0xfaff, 3}, /* CJK Ideographs */
3302 0xfe30, 0xfe6b, 1}, /* punctuation forms */
3304 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
3306 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
3308 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
3310 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
3312 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
3317 uc &= (CSET_MASK | CHAR_MASK);
3319 switch (uc & CSET_MASK) {
3321 uc = unitab_xterm[uc & 0xFF];
3324 uc = unitab_line[uc & 0xFF];
3327 uc = unitab_scoacs[uc&0xFF];
3330 switch (uc & CSET_MASK) {
3332 uc = unitab_font[uc & 0xFF];
3335 uc = unitab_oemcp[uc & 0xFF];
3339 /* For DBCS font's I can't do anything usefull. Even this will sometimes
3340 * fail as there's such a thing as a double width space. :-(
3342 if (dbcs_screenfont && font_codepage == line_codepage)
3346 return term->wordness[uc];
3348 for (wptr = ucs_words; wptr->start; wptr++) {
3349 if (uc >= wptr->start && uc <= wptr->end)
3357 * Spread the selection outwards according to the selection mode.
3359 static pos sel_spread_half(Terminal *term, pos p, int dir)
3361 unsigned long *ldata;
3363 int topy = -count234(term->scrollback);
3365 ldata = lineptr(p.y);
3367 switch (term->selmode) {
3370 * In this mode, every character is a separate unit, except
3371 * for runs of spaces at the end of a non-wrapping line.
3373 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3374 unsigned long *q = ldata + term->cols;
3375 while (q > ldata && (q[-1] & CHAR_MASK) == 0x20)
3377 if (q == ldata + term->cols)
3379 if (p.x >= q - ldata)
3380 p.x = (dir == -1 ? q - ldata : term->cols - 1);
3385 * In this mode, the units are maximal runs of characters
3386 * whose `wordness' has the same value.
3388 wvalue = wordtype(term, ldata[p.x]);
3391 if (p.x < term->cols-1) {
3392 if (wordtype(term, ldata[p.x + 1]) == wvalue)
3397 if (ldata[term->cols] & LATTR_WRAPPED) {
3398 unsigned long *ldata2;
3399 ldata2 = lineptr(p.y+1);
3400 if (wordtype(term, ldata2[0]) == wvalue) {
3413 if (wordtype(term, ldata[p.x - 1]) == wvalue)
3418 unsigned long *ldata2;
3421 ldata2 = lineptr(p.y-1);
3422 if ((ldata2[term->cols] & LATTR_WRAPPED) &&
3423 wordtype(term, ldata2[term->cols-1]) == wvalue) {
3435 * In this mode, every line is a unit.
3437 p.x = (dir == -1 ? 0 : term->cols - 1);
3443 static void sel_spread(Terminal *term)
3445 if (term->seltype == LEXICOGRAPHIC) {
3446 term->selstart = sel_spread_half(term, term->selstart, -1);
3447 decpos(term->selend);
3448 term->selend = sel_spread_half(term, term->selend, +1);
3449 incpos(term->selend);
3453 void term_do_paste(Terminal *term)
3458 get_clip(&data, &len);
3459 if (data && len > 0) {
3462 term_seen_key_event(term); /* pasted data counts */
3464 if (term->paste_buffer)
3465 sfree(term->paste_buffer);
3466 term->paste_pos = term->paste_hold = term->paste_len = 0;
3467 term->paste_buffer = smalloc(len * sizeof(wchar_t));
3470 while (p < data + len) {
3471 while (p < data + len &&
3472 !(p <= data + len - sel_nl_sz &&
3473 !memcmp(p, sel_nl, sizeof(sel_nl))))
3478 for (i = 0; i < p - q; i++) {
3479 term->paste_buffer[term->paste_len++] = q[i];
3483 if (p <= data + len - sel_nl_sz &&
3484 !memcmp(p, sel_nl, sizeof(sel_nl))) {
3485 term->paste_buffer[term->paste_len++] = '\r';
3491 /* Assume a small paste will be OK in one go. */
3492 if (term->paste_len < 256) {
3493 luni_send(term->paste_buffer, term->paste_len, 0);
3494 if (term->paste_buffer)
3495 sfree(term->paste_buffer);
3496 term->paste_buffer = 0;
3497 term->paste_pos = term->paste_hold = term->paste_len = 0;
3500 get_clip(NULL, NULL);
3503 void term_mouse(Terminal *term, Mouse_Button b, Mouse_Action a, int x, int y,
3504 int shift, int ctrl, int alt)
3507 unsigned long *ldata;
3508 int raw_mouse = (term->xterm_mouse &&
3509 !cfg.no_mouse_rep &&
3510 !(cfg.mouse_override && shift));
3511 int default_seltype;
3515 if (a == MA_DRAG && !raw_mouse)
3516 term_scroll(term, 0, -1);
3518 if (y >= term->rows) {
3520 if (a == MA_DRAG && !raw_mouse)
3521 term_scroll(term, 0, +1);
3530 if (x >= term->cols)
3533 selpoint.y = y + term->disptop;
3535 ldata = lineptr(selpoint.y);
3536 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM)
3540 int encstate = 0, r, c;
3542 static int is_down = 0;
3546 encstate = 0x20; /* left button down */
3557 case MBT_WHEEL_DOWN:
3560 default: break; /* placate gcc warning about enum use */
3564 if (term->xterm_mouse == 1)
3577 default: break; /* placate gcc warning about enum use */
3586 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
3587 ldisc_send(abuf, 6, 0);
3591 b = translate_button(b);
3594 * Set the selection type (rectangular or normal) at the start
3595 * of a selection attempt, from the state of Alt.
3597 if (!alt ^ !cfg.rect_select)
3598 default_seltype = RECTANGULAR;
3600 default_seltype = LEXICOGRAPHIC;
3602 if (term->selstate == NO_SELECTION) {
3603 term->seltype = default_seltype;
3606 if (b == MBT_SELECT && a == MA_CLICK) {
3608 term->selstate = ABOUT_TO;
3609 term->seltype = default_seltype;
3610 term->selanchor = selpoint;
3611 term->selmode = SM_CHAR;
3612 } else if (b == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
3614 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
3615 term->selstate = DRAGGING;
3616 term->selstart = term->selanchor = selpoint;
3617 term->selend = term->selstart;
3618 incpos(term->selend);
3620 } else if ((b == MBT_SELECT && a == MA_DRAG) ||
3621 (b == MBT_EXTEND && a != MA_RELEASE)) {
3622 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
3624 if (b == MBT_EXTEND && a != MA_DRAG && term->selstate == SELECTED) {
3625 if (term->seltype == LEXICOGRAPHIC) {
3627 * For normal selection, we extend by moving
3628 * whichever end of the current selection is closer
3631 if (posdiff(selpoint, term->selstart) <
3632 posdiff(term->selend, term->selstart) / 2) {
3633 term->selanchor = term->selend;
3634 decpos(term->selanchor);
3636 term->selanchor = term->selstart;
3640 * For rectangular selection, we have a choice of
3641 * _four_ places to put selanchor and selpoint: the
3642 * four corners of the selection.
3644 if (2*selpoint.x < term->selstart.x + term->selend.x)
3645 term->selanchor.x = term->selend.x-1;
3647 term->selanchor.x = term->selstart.x;
3649 if (2*selpoint.y < term->selstart.y + term->selend.y)
3650 term->selanchor.y = term->selend.y;
3652 term->selanchor.y = term->selstart.y;
3654 term->selstate = DRAGGING;
3656 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
3657 term->selanchor = selpoint;
3658 term->selstate = DRAGGING;
3659 if (term->seltype == LEXICOGRAPHIC) {
3661 * For normal selection, we set (selstart,selend) to
3662 * (selpoint,selanchor) in some order.
3664 if (poslt(selpoint, term->selanchor)) {
3665 term->selstart = selpoint;
3666 term->selend = term->selanchor;
3667 incpos(term->selend);
3669 term->selstart = term->selanchor;
3670 term->selend = selpoint;
3671 incpos(term->selend);
3675 * For rectangular selection, we may need to
3676 * interchange x and y coordinates (if the user has
3677 * dragged in the -x and +y directions, or vice versa).
3679 term->selstart.x = min(term->selanchor.x, selpoint.x);
3680 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
3681 term->selstart.y = min(term->selanchor.y, selpoint.y);
3682 term->selend.y = max(term->selanchor.y, selpoint.y);
3685 } else if ((b == MBT_SELECT || b == MBT_EXTEND) && a == MA_RELEASE) {
3686 if (term->selstate == DRAGGING) {
3688 * We've completed a selection. We now transfer the
3689 * data to the clipboard.
3691 clipme(term, term->selstart, term->selend,
3692 (term->seltype == RECTANGULAR));
3693 term->selstate = SELECTED;
3695 term->selstate = NO_SELECTION;
3696 } else if (b == MBT_PASTE
3698 #if MULTICLICK_ONLY_EVENT
3699 || a == MA_2CLK || a == MA_3CLK
3708 void term_nopaste(Terminal *term)
3710 if (term->paste_len == 0)
3712 sfree(term->paste_buffer);
3713 term->paste_buffer = 0;
3714 term->paste_len = 0;
3717 int term_paste_pending(Terminal *term)
3719 return term->paste_len != 0;
3722 void term_paste(Terminal *term)
3724 long now, paste_diff;
3726 if (term->paste_len == 0)
3729 /* Don't wait forever to paste */
3730 if (term->paste_hold) {
3731 now = GETTICKCOUNT();
3732 paste_diff = now - term->last_paste;
3733 if (paste_diff >= 0 && paste_diff < 450)
3736 term->paste_hold = 0;
3738 while (term->paste_pos < term->paste_len) {
3740 while (n + term->paste_pos < term->paste_len) {
3741 if (term->paste_buffer[term->paste_pos + n++] == '\r')
3744 luni_send(term->paste_buffer + term->paste_pos, n, 0);
3745 term->paste_pos += n;
3747 if (term->paste_pos < term->paste_len) {
3748 term->paste_hold = 1;
3752 sfree(term->paste_buffer);
3753 term->paste_buffer = NULL;
3754 term->paste_len = 0;
3757 static void deselect(Terminal *term)
3759 term->selstate = NO_SELECTION;
3760 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
3763 void term_deselect(Terminal *term)
3769 int term_ldisc(Terminal *term, int option)
3771 if (option == LD_ECHO)
3772 return term->term_echoing;
3773 if (option == LD_EDIT)
3774 return term->term_editing;
3779 * from_backend(), to get data from the backend for the terminal.
3781 int from_backend(void *vterm, int is_stderr, char *data, int len)
3783 Terminal *term = (Terminal *)vterm;
3787 bufchain_add(&term->inbuf, data, len);
3790 * term_out() always completely empties inbuf. Therefore,
3791 * there's no reason at all to return anything other than zero
3792 * from this function, because there _can't_ be a question of
3793 * the remote side needing to wait until term_out() has cleared
3796 * This is a slightly suboptimal way to deal with SSH2 - in
3797 * principle, the window mechanism would allow us to continue
3798 * to accept data on forwarded ports and X connections even
3799 * while the terminal processing was going slowly - but we
3800 * can't do the 100% right thing without moving the terminal
3801 * processing into a separate thread, and that might hurt
3802 * portability. So we manage stdout buffering the old SSH1 way:
3803 * if the terminal processing goes slowly, the whole SSH
3804 * connection stops accepting data until it's ready.
3806 * In practice, I can't imagine this causing serious trouble.