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_ins = term->insert = FALSE;
152 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
153 term->alt_wrap = term->wrap = cfg.wrap_mode;
154 term->alt_cset = term->cset = term->save_cset = 0;
155 term->alt_utf = term->utf = term->save_utf = 0;
157 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
158 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = ATTR_ASCII;
160 term->in_vbell = FALSE;
162 term->big_cursor = 0;
163 term->save_attr = term->curr_attr = ATTR_DEFAULT;
164 term->term_editing = term->term_echoing = FALSE;
165 term->app_cursor_keys = cfg.app_cursor;
166 term->app_keypad_keys = cfg.app_keypad;
167 term->use_bce = cfg.bce;
168 term->blink_is_real = cfg.blinktext;
169 term->erase_char = ERASE_CHAR;
171 term_print_finish(term);
174 for (i = 0; i < 256; i++)
175 term->wordness[i] = cfg.wordness[i];
178 swap_screen(term, 1, FALSE, FALSE);
179 erase_lots(term, FALSE, TRUE, TRUE);
180 swap_screen(term, 0, FALSE, FALSE);
181 erase_lots(term, FALSE, TRUE, TRUE);
186 * Force a screen update.
188 void term_update(Terminal *term)
191 ctx = get_ctx(term->frontend);
193 int need_sbar_update = term->seen_disp_event;
194 if (term->seen_disp_event && cfg.scroll_on_disp) {
195 term->disptop = 0; /* return to main screen */
196 term->seen_disp_event = 0;
197 need_sbar_update = TRUE;
199 if (need_sbar_update)
201 do_paint(term, ctx, TRUE);
202 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
208 * Called from front end when a keypress occurs, to trigger
209 * anything magical that needs to happen in that situation.
211 void term_seen_key_event(Terminal *term)
214 * On any keypress, clear the bell overload mechanism
215 * completely, on the grounds that large numbers of
216 * beeps coming from deliberate key action are likely
217 * to be intended (e.g. beeps from filename completion
218 * blocking repeatedly).
220 term->beep_overloaded = FALSE;
221 while (term->beephead) {
222 struct beeptime *tmp = term->beephead;
223 term->beephead = tmp->next;
226 term->beeptail = NULL;
230 * Reset the scrollback on keypress, if we're doing that.
232 if (cfg.scroll_on_key) {
233 term->disptop = 0; /* return to main screen */
234 term->seen_disp_event = 1;
239 * Same as power_on(), but an external function.
241 void term_pwron(Terminal *term)
244 if (term->ldisc) /* cause ldisc to notice changes */
245 ldisc_send(term->ldisc, NULL, 0, 0);
253 * When the user reconfigures us, we need to check the forbidden-
254 * alternate-screen config option, disable raw mouse mode if the
255 * user has disabled mouse reporting, and abandon a print job if
256 * the user has disabled printing.
258 void term_reconfig(Terminal *term)
260 if (cfg.no_alt_screen)
261 swap_screen(term, 0, FALSE, FALSE);
262 if (cfg.no_mouse_rep) {
263 term->xterm_mouse = 0;
264 set_raw_mouse_mode(term->frontend, 0);
266 if (cfg.no_remote_charset) {
267 term->cset_attr[0] = term->cset_attr[1] = ATTR_ASCII;
268 term->sco_acs = term->alt_sco_acs = 0;
272 term_print_finish(term);
277 * Clear the scrollback.
279 void term_clrsb(Terminal *term)
283 while ((line = delpos234(term->scrollback, 0)) != NULL) {
290 * Initialise the terminal.
292 Terminal *term_init(void *frontend)
297 * Allocate a new Terminal structure and initialise the fields
300 term = smalloc(sizeof(Terminal));
301 term->frontend = frontend;
303 term->compatibility_level = TM_PUTTY;
304 strcpy(term->id_string, "\033[?6c");
305 term->last_blink = term->last_tblink = 0;
306 term->paste_buffer = NULL;
307 term->last_paste = 0;
308 bufchain_init(&term->inbuf);
309 bufchain_init(&term->printer_buf);
310 term->printing = term->only_printing = FALSE;
311 term->print_job = NULL;
312 term->vt52_mode = FALSE;
313 term->cr_lf_return = FALSE;
314 term->seen_disp_event = FALSE;
315 term->xterm_mouse = term->mouse_is_down = FALSE;
316 term->reset_132 = FALSE;
317 term->blinker = term->tblinker = 0;
319 term->repeat_off = FALSE;
320 term->termstate = TOPLEVEL;
321 term->selstate = NO_SELECTION;
324 term->screen = term->alt_screen = term->scrollback = NULL;
326 term->disptext = term->dispcurs = NULL;
329 term->rows = term->cols = -1;
331 term->beephead = term->beeptail = NULL;
333 term->lastbeep = FALSE;
334 term->beep_overloaded = FALSE;
335 term->resize_fn = NULL;
336 term->resize_ctx = NULL;
342 * Set up the terminal for a given size.
344 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
347 unsigned long *newdisp, *line;
350 int save_alt_which = term->alt_which;
352 if (newrows == term->rows && newcols == term->cols &&
353 newsavelines == term->savelines)
354 return; /* nothing to do */
357 swap_screen(term, 0, FALSE, FALSE);
359 term->alt_t = term->marg_t = 0;
360 term->alt_b = term->marg_b = newrows - 1;
362 if (term->rows == -1) {
363 term->scrollback = newtree234(NULL);
364 term->screen = newtree234(NULL);
369 * Resize the screen and scrollback. We only need to shift
370 * lines around within our data structures, because lineptr()
371 * will take care of resizing each individual line if
374 * - If the new screen and the old screen differ in length, we
375 * must shunt some lines in from the scrollback or out to
378 * - If doing that fails to provide us with enough material to
379 * fill the new screen (i.e. the number of rows needed in
380 * the new screen exceeds the total number in the previous
381 * screen+scrollback), we must invent some blank lines to
384 * - Then, if the new scrollback length is less than the
385 * amount of scrollback we actually have, we must throw some
388 sblen = count234(term->scrollback);
389 /* Do this loop to expand the screen if newrows > rows */
390 for (i = term->rows; i < newrows; i++) {
392 line = delpos234(term->scrollback, --sblen);
394 line = smalloc(TSIZE * (newcols + 2));
396 for (j = 0; j <= newcols; j++)
397 line[j + 1] = ERASE_CHAR;
399 addpos234(term->screen, line, 0);
401 /* Do this loop to shrink the screen if newrows < rows */
402 for (i = newrows; i < term->rows; i++) {
403 line = delpos234(term->screen, 0);
404 addpos234(term->scrollback, line, sblen++);
406 assert(count234(term->screen) == newrows);
407 while (sblen > newsavelines) {
408 line = delpos234(term->scrollback, 0);
412 assert(count234(term->scrollback) <= newsavelines);
415 newdisp = smalloc(newrows * (newcols + 1) * TSIZE);
416 for (i = 0; i < newrows * (newcols + 1); i++)
417 newdisp[i] = ATTR_INVALID;
418 sfree(term->disptext);
419 term->disptext = newdisp;
420 term->dispcurs = NULL;
422 newalt = newtree234(NULL);
423 for (i = 0; i < newrows; i++) {
424 line = smalloc(TSIZE * (newcols + 2));
426 for (j = 0; j <= newcols; j++)
427 line[j + 1] = term->erase_char;
428 addpos234(newalt, line, i);
430 if (term->alt_screen) {
431 while (NULL != (line = delpos234(term->alt_screen, 0)))
433 freetree234(term->alt_screen);
435 term->alt_screen = newalt;
437 term->tabs = srealloc(term->tabs, newcols * sizeof(*term->tabs));
440 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
441 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
445 term->curs.y += newrows - term->rows;
446 if (term->curs.y < 0)
448 if (term->curs.y >= newrows)
449 term->curs.y = newrows - 1;
450 if (term->curs.x >= newcols)
451 term->curs.x = newcols - 1;
452 term->alt_x = term->alt_y = 0;
453 term->wrapnext = term->alt_wnext = FALSE;
455 term->rows = newrows;
456 term->cols = newcols;
457 term->savelines = newsavelines;
460 swap_screen(term, save_alt_which, FALSE, FALSE);
465 term->resize_fn(term->resize_ctx, term->cols, term->rows);
469 * Hand a function and context pointer to the terminal which it can
470 * use to notify a back end of resizes.
472 void term_provide_resize_fn(Terminal *term,
473 void (*resize_fn)(void *, int, int),
476 term->resize_fn = resize_fn;
477 term->resize_ctx = resize_ctx;
478 if (term->cols > 0 && term->rows > 0)
479 resize_fn(resize_ctx, term->cols, term->rows);
483 * Swap screens. If `reset' is TRUE and we have been asked to
484 * switch to the alternate screen, we must bring most of its
485 * configuration from the main screen and erase the contents of the
486 * alternate screen completely. (This is even true if we're already
487 * on it! Blame xterm.)
489 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
495 reset = FALSE; /* do no weird resetting if which==0 */
497 if (which != term->alt_which) {
498 term->alt_which = which;
500 ttr = term->alt_screen;
501 term->alt_screen = term->screen;
504 if (!reset && !keep_cur_pos)
505 term->curs.x = term->alt_x;
508 if (!reset && !keep_cur_pos)
509 term->curs.y = term->alt_y;
512 if (!reset) term->marg_t = term->alt_t;
515 if (!reset) term->marg_b = term->alt_b;
518 if (!reset) term->dec_om = term->alt_om;
521 if (!reset) term->wrap = term->alt_wrap;
524 if (!reset) term->wrapnext = term->alt_wnext;
527 if (!reset) term->insert = term->alt_ins;
530 if (!reset) term->cset = term->alt_cset;
533 if (!reset) term->utf = term->alt_utf;
536 if (!reset) term->sco_acs = term->alt_sco_acs;
537 term->alt_sco_acs = t;
540 if (reset && term->screen) {
542 * Yes, this _is_ supposed to honour background-colour-erase.
544 erase_lots(term, FALSE, TRUE, TRUE);
548 * This might not be possible if we're called during
556 * Update the scroll bar.
558 static void update_sbar(Terminal *term)
562 nscroll = count234(term->scrollback);
564 set_sbar(term->frontend, nscroll + term->rows,
565 nscroll + term->disptop, term->rows);
569 * Check whether the region bounded by the two pointers intersects
570 * the scroll region, and de-select the on-screen selection if so.
572 static void check_selection(Terminal *term, pos from, pos to)
574 if (poslt(from, term->selend) && poslt(term->selstart, to))
579 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
580 * for backward.) `sb' is TRUE if the scrolling is permitted to
581 * affect the scrollback buffer.
583 * NB this function invalidates all pointers into lines of the
584 * screen data structures. In particular, you MUST call fix_cpos
585 * after calling scroll() and before doing anything else that
586 * uses the cpos shortcut pointer.
588 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
590 unsigned long *line, *line2;
593 if (topline != 0 || term->alt_which != 0)
598 line = delpos234(term->screen, botline);
599 line = resizeline(line, term->cols);
600 for (i = 0; i < term->cols; i++)
601 line[i + 1] = term->erase_char;
602 line[term->cols + 1] = 0;
603 addpos234(term->screen, line, topline);
605 if (term->selstart.y >= topline && term->selstart.y <= botline) {
607 if (term->selstart.y > botline) {
608 term->selstart.y = botline;
609 term->selstart.x = 0;
612 if (term->selend.y >= topline && term->selend.y <= botline) {
614 if (term->selend.y > botline) {
615 term->selend.y = botline;
624 line = delpos234(term->screen, topline);
625 if (sb && term->savelines > 0) {
626 int sblen = count234(term->scrollback);
628 * We must add this line to the scrollback. We'll
629 * remove a line from the top of the scrollback to
630 * replace it, or allocate a new one if the
631 * scrollback isn't full.
633 if (sblen == term->savelines) {
634 sblen--, line2 = delpos234(term->scrollback, 0);
636 line2 = smalloc(TSIZE * (term->cols + 2));
637 line2[0] = term->cols;
639 addpos234(term->scrollback, line, sblen);
643 * If the user is currently looking at part of the
644 * scrollback, and they haven't enabled any options
645 * that are going to reset the scrollback as a
646 * result of this movement, then the chances are
647 * they'd like to keep looking at the same line. So
648 * we move their viewpoint at the same rate as the
649 * scroll, at least until their viewpoint hits the
650 * top end of the scrollback buffer, at which point
651 * we don't have the choice any more.
653 * Thanks to Jan Holmen Holsten for the idea and
654 * initial implementation.
656 if (term->disptop > -term->savelines && term->disptop < 0)
659 line = resizeline(line, term->cols);
660 for (i = 0; i < term->cols; i++)
661 line[i + 1] = term->erase_char;
662 line[term->cols + 1] = 0;
663 addpos234(term->screen, line, botline);
666 * If the selection endpoints move into the scrollback,
667 * we keep them moving until they hit the top. However,
668 * of course, if the line _hasn't_ moved into the
669 * scrollback then we don't do this, and cut them off
670 * at the top of the scroll region.
672 * This applies to selstart and selend (for an existing
673 * selection), and also selanchor (for one being
674 * selected as we speak).
676 seltop = sb ? -term->savelines : topline;
678 if (term->selstart.y >= seltop &&
679 term->selstart.y <= botline) {
681 if (term->selstart.y < seltop) {
682 term->selstart.y = seltop;
683 term->selstart.x = 0;
686 if (term->selend.y >= seltop && term->selend.y <= botline) {
688 if (term->selend.y < seltop) {
689 term->selend.y = seltop;
693 if (term->selanchor.y >= seltop && term->selanchor.y <= botline) {
695 if (term->selanchor.y < seltop) {
696 term->selanchor.y = seltop;
697 term->selanchor.x = 0;
707 * Move the cursor to a given position, clipping at boundaries. We
708 * may or may not want to clip at the scroll margin: marg_clip is 0
709 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
710 * even _being_ outside the margins.
712 static void move(Terminal *term, int x, int y, int marg_clip)
719 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
722 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
733 term->wrapnext = FALSE;
737 * Save or restore the cursor and SGR mode.
739 static void save_cursor(Terminal *term, int save)
742 term->savecurs = term->curs;
743 term->save_attr = term->curr_attr;
744 term->save_cset = term->cset;
745 term->save_utf = term->utf;
746 term->save_wnext = term->wrapnext;
747 term->save_csattr = term->cset_attr[term->cset];
748 term->save_sco_acs = term->sco_acs;
750 term->curs = term->savecurs;
751 /* Make sure the window hasn't shrunk since the save */
752 if (term->curs.x >= term->cols)
753 term->curs.x = term->cols - 1;
754 if (term->curs.y >= term->rows)
755 term->curs.y = term->rows - 1;
757 term->curr_attr = term->save_attr;
758 term->cset = term->save_cset;
759 term->utf = term->save_utf;
760 term->wrapnext = term->save_wnext;
762 * wrapnext might reset to False if the x position is no
763 * longer at the rightmost edge.
765 if (term->wrapnext && term->curs.x < term->cols-1)
766 term->wrapnext = FALSE;
767 term->cset_attr[term->cset] = term->save_csattr;
768 term->sco_acs = term->save_sco_acs;
771 term->erase_char = (' ' | ATTR_ASCII |
773 (ATTR_FGMASK | ATTR_BGMASK)));
778 * Erase a large portion of the screen: the whole screen, or the
779 * whole line, or parts thereof.
781 static void erase_lots(Terminal *term,
782 int line_only, int from_begin, int to_end)
786 unsigned long *ldata;
789 start.y = term->curs.y;
791 end.y = term->curs.y + 1;
808 check_selection(term, start, end);
810 /* Clear screen also forces a full window redraw, just in case. */
811 if (start.y == 0 && start.x == 0 && end.y == term->rows)
812 term_invalidate(term);
814 ldata = lineptr(start.y);
815 while (poslt(start, end)) {
816 if (start.x == term->cols && !erase_lattr)
817 ldata[start.x] &= ~LATTR_WRAPPED;
819 ldata[start.x] = term->erase_char;
820 if (incpos(start) && start.y < term->rows)
821 ldata = lineptr(start.y);
826 * Insert or delete characters within the current line. n is +ve if
827 * insertion is desired, and -ve for deletion.
829 static void insch(Terminal *term, int n)
831 int dir = (n < 0 ? -1 : +1);
834 unsigned long *ldata;
836 n = (n < 0 ? -n : n);
837 if (n > term->cols - term->curs.x)
838 n = term->cols - term->curs.x;
839 m = term->cols - term->curs.x - n;
840 cursplus.y = term->curs.y;
841 cursplus.x = term->curs.x + n;
842 check_selection(term, term->curs, cursplus);
843 ldata = lineptr(term->curs.y);
845 memmove(ldata + term->curs.x, ldata + term->curs.x + n, m * TSIZE);
847 ldata[term->curs.x + m++] = term->erase_char;
849 memmove(ldata + term->curs.x + n, ldata + term->curs.x, m * TSIZE);
851 ldata[term->curs.x + n] = term->erase_char;
856 * Toggle terminal mode `mode' to state `state'. (`query' indicates
857 * whether the mode is a DEC private one or a normal one.)
859 static void toggle_mode(Terminal *term, int mode, int query, int state)
865 case 1: /* application cursor keys */
866 term->app_cursor_keys = state;
868 case 2: /* VT52 mode */
869 term->vt52_mode = !state;
870 if (term->vt52_mode) {
871 term->blink_is_real = FALSE;
872 term->vt52_bold = FALSE;
874 term->blink_is_real = cfg.blinktext;
877 case 3: /* 80/132 columns */
879 if (!cfg.no_remote_resize)
880 request_resize(term->frontend, state ? 132 : 80, term->rows);
881 term->reset_132 = state;
883 case 5: /* reverse video */
885 * Toggle reverse video. If we receive an OFF within the
886 * visual bell timeout period after an ON, we trigger an
887 * effective visual bell, so that ESC[?5hESC[?5l will
888 * always be an actually _visible_ visual bell.
890 ticks = GETTICKCOUNT();
891 /* turn off a previous vbell to avoid inconsistencies */
892 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
893 term->in_vbell = FALSE;
894 if (term->rvideo && !state && /* we're turning it off... */
895 (ticks - term->rvbell_startpoint) < VBELL_TIMEOUT) {/*...soon*/
896 /* If there's no vbell timeout already, or this one lasts
897 * longer, replace vbell_timeout with ours. */
898 if (!term->in_vbell ||
899 (term->rvbell_startpoint - term->vbell_startpoint <
901 term->vbell_startpoint = term->rvbell_startpoint;
902 term->in_vbell = TRUE; /* may clear rvideo but set in_vbell */
903 } else if (!term->rvideo && state) {
904 /* This is an ON, so we notice the time and save it. */
905 term->rvbell_startpoint = ticks;
907 term->rvideo = state;
908 term->seen_disp_event = TRUE;
912 case 6: /* DEC origin mode */
913 term->dec_om = state;
915 case 7: /* auto wrap */
918 case 8: /* auto key repeat */
919 term->repeat_off = !state;
921 case 10: /* set local edit mode */
922 term->term_editing = state;
923 if (term->ldisc) /* cause ldisc to notice changes */
924 ldisc_send(term->ldisc, NULL, 0, 0);
926 case 25: /* enable/disable cursor */
927 compatibility2(OTHER, VT220);
928 term->cursor_on = state;
929 term->seen_disp_event = TRUE;
931 case 47: /* alternate screen */
932 compatibility(OTHER);
934 swap_screen(term, cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
937 case 1000: /* xterm mouse 1 */
938 term->xterm_mouse = state ? 1 : 0;
939 set_raw_mouse_mode(term->frontend, state);
941 case 1002: /* xterm mouse 2 */
942 term->xterm_mouse = state ? 2 : 0;
943 set_raw_mouse_mode(term->frontend, state);
945 case 1047: /* alternate screen */
946 compatibility(OTHER);
948 swap_screen(term, cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
951 case 1048: /* save/restore cursor */
952 save_cursor(term, state);
953 if (!state) term->seen_disp_event = TRUE;
955 case 1049: /* cursor & alternate screen */
957 save_cursor(term, state);
958 if (!state) term->seen_disp_event = TRUE;
959 compatibility(OTHER);
961 swap_screen(term, cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
963 save_cursor(term, state);
968 case 4: /* set insert mode */
969 compatibility(VT102);
970 term->insert = state;
972 case 12: /* set echo mode */
973 term->term_echoing = !state;
974 if (term->ldisc) /* cause ldisc to notice changes */
975 ldisc_send(term->ldisc, NULL, 0, 0);
977 case 20: /* Return sends ... */
978 term->cr_lf_return = state;
980 case 34: /* Make cursor BIG */
981 compatibility2(OTHER, VT220);
982 term->big_cursor = !state;
987 * Process an OSC sequence: set window title or icon name.
989 static void do_osc(Terminal *term)
992 while (term->osc_strlen--)
993 term->wordness[(unsigned char)
994 term->osc_string[term->osc_strlen]] = term->esc_args[0];
996 term->osc_string[term->osc_strlen] = '\0';
997 switch (term->esc_args[0]) {
1000 if (!cfg.no_remote_wintitle)
1001 set_icon(term->frontend, term->osc_string);
1002 if (term->esc_args[0] == 1)
1004 /* fall through: parameter 0 means set both */
1007 if (!cfg.no_remote_wintitle)
1008 set_title(term->frontend, term->osc_string);
1015 * ANSI printing routines.
1017 static void term_print_setup(Terminal *term)
1019 bufchain_clear(&term->printer_buf);
1020 term->print_job = printer_start_job(cfg.printer);
1022 static void term_print_flush(Terminal *term)
1027 while ((size = bufchain_size(&term->printer_buf)) > 5) {
1028 bufchain_prefix(&term->printer_buf, &data, &len);
1031 printer_job_data(term->print_job, data, len);
1032 bufchain_consume(&term->printer_buf, len);
1035 static void term_print_finish(Terminal *term)
1041 if (!term->printing && !term->only_printing)
1042 return; /* we need do nothing */
1044 term_print_flush(term);
1045 while ((size = bufchain_size(&term->printer_buf)) > 0) {
1046 bufchain_prefix(&term->printer_buf, &data, &len);
1048 if (c == '\033' || c == '\233') {
1049 bufchain_consume(&term->printer_buf, size);
1052 printer_job_data(term->print_job, &c, 1);
1053 bufchain_consume(&term->printer_buf, 1);
1056 printer_finish_job(term->print_job);
1057 term->print_job = NULL;
1058 term->printing = term->only_printing = FALSE;
1062 * Remove everything currently in `inbuf' and stick it up on the
1063 * in-memory display. There's a big state machine in here to
1064 * process escape sequences...
1066 void term_out(Terminal *term)
1069 unsigned char localbuf[256], *chars;
1074 chars = NULL; /* placate compiler warnings */
1075 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
1079 bufchain_prefix(&term->inbuf, &ret, &nchars);
1080 if (nchars > sizeof(localbuf))
1081 nchars = sizeof(localbuf);
1082 memcpy(localbuf, ret, nchars);
1083 bufchain_consume(&term->inbuf, nchars);
1085 assert(chars != NULL);
1091 * Optionally log the session traffic to a file. Useful for
1092 * debugging and possibly also useful for actual logging.
1094 if (cfg.logtype == LGTYP_DEBUG && term->logctx)
1095 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
1101 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1102 * be able to display 8-bit characters, but I'll let that go 'cause
1107 * If we're printing, add the character to the printer
1110 if (term->printing) {
1111 bufchain_add(&term->printer_buf, &c, 1);
1114 * If we're in print-only mode, we use a much simpler
1115 * state machine designed only to recognise the ESC[4i
1116 * termination sequence.
1118 if (term->only_printing) {
1120 term->print_state = 1;
1121 else if (c == (unsigned char)'\233')
1122 term->print_state = 2;
1123 else if (c == '[' && term->print_state == 1)
1124 term->print_state = 2;
1125 else if (c == '4' && term->print_state == 2)
1126 term->print_state = 3;
1127 else if (c == 'i' && term->print_state == 3)
1128 term->print_state = 4;
1130 term->print_state = 0;
1131 if (term->print_state == 4) {
1132 term_print_finish(term);
1138 /* First see about all those translations. */
1139 if (term->termstate == TOPLEVEL) {
1141 switch (term->utf_state) {
1144 /* UTF-8 must be stateless so we ignore iso2022. */
1145 if (unitab_ctrl[c] != 0xFF)
1147 else c = ((unsigned char)c) | ATTR_ASCII;
1149 } else if ((c & 0xe0) == 0xc0) {
1150 term->utf_size = term->utf_state = 1;
1151 term->utf_char = (c & 0x1f);
1152 } else if ((c & 0xf0) == 0xe0) {
1153 term->utf_size = term->utf_state = 2;
1154 term->utf_char = (c & 0x0f);
1155 } else if ((c & 0xf8) == 0xf0) {
1156 term->utf_size = term->utf_state = 3;
1157 term->utf_char = (c & 0x07);
1158 } else if ((c & 0xfc) == 0xf8) {
1159 term->utf_size = term->utf_state = 4;
1160 term->utf_char = (c & 0x03);
1161 } else if ((c & 0xfe) == 0xfc) {
1162 term->utf_size = term->utf_state = 5;
1163 term->utf_char = (c & 0x01);
1174 if ((c & 0xC0) != 0x80) {
1177 term->utf_state = 0;
1180 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
1181 if (--term->utf_state)
1186 /* Is somebody trying to be evil! */
1188 (c < 0x800 && term->utf_size >= 2) ||
1189 (c < 0x10000 && term->utf_size >= 3) ||
1190 (c < 0x200000 && term->utf_size >= 4) ||
1191 (c < 0x4000000 && term->utf_size >= 5))
1194 /* Unicode line separator and paragraph separator are CR-LF */
1195 if (c == 0x2028 || c == 0x2029)
1198 /* High controls are probably a Baaad idea too. */
1202 /* The UTF-16 surrogates are not nice either. */
1203 /* The standard give the option of decoding these:
1204 * I don't want to! */
1205 if (c >= 0xD800 && c < 0xE000)
1208 /* ISO 10646 characters now limited to UTF-16 range. */
1212 /* This is currently a TagPhobic application.. */
1213 if (c >= 0xE0000 && c <= 0xE007F)
1216 /* U+FEFF is best seen as a null. */
1219 /* But U+FFFE is an error. */
1220 if (c == 0xFFFE || c == 0xFFFF)
1223 /* Oops this is a 16bit implementation */
1228 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
1229 else if(term->sco_acs &&
1230 (c!='\033' && c!='\n' && c!='\r' && c!='\b'))
1232 if (term->sco_acs == 2) c ^= 0x80;
1235 switch (term->cset_attr[term->cset]) {
1237 * Linedraw characters are different from 'ESC ( B'
1238 * only for a small range. For ones outside that
1239 * range, make sure we use the same font as well as
1240 * the same encoding.
1243 if (unitab_ctrl[c] != 0xFF)
1246 c = ((unsigned char) c) | ATTR_LINEDRW;
1250 /* If UK-ASCII, make the '#' a LineDraw Pound */
1252 c = '}' | ATTR_LINEDRW;
1255 /*FALLTHROUGH*/ case ATTR_ASCII:
1256 if (unitab_ctrl[c] != 0xFF)
1259 c = ((unsigned char) c) | ATTR_ASCII;
1262 if (c>=' ') c = ((unsigned char)c) | ATTR_SCOACS;
1268 /* How about C1 controls ? */
1269 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
1270 !term->vt52_mode && has_compat(VT220)) {
1271 term->termstate = SEEN_ESC;
1272 term->esc_query = FALSE;
1273 c = '@' + (c & 0x1F);
1276 /* Or the GL control. */
1277 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
1278 if (term->curs.x && !term->wrapnext)
1280 term->wrapnext = FALSE;
1282 if (!cfg.no_dbackspace) /* destructive bksp might be disabled */
1283 *term->cpos = (' ' | term->curr_attr | ATTR_ASCII);
1285 /* Or normal C0 controls. */
1286 if ((c & -32) == 0 && term->termstate < DO_CTRLS) {
1288 case '\005': /* terminal type query */
1289 /* Strictly speaking this is VT100 but a VT100 defaults to
1290 * no response. Other terminals respond at their option.
1292 * Don't put a CR in the default string as this tends to
1293 * upset some weird software.
1295 * An xterm returns "xterm" (5 characters)
1297 compatibility(ANSIMIN);
1299 char abuf[256], *s, *d;
1301 for (s = cfg.answerback, d = abuf; *s; s++) {
1303 if (*s >= 'a' && *s <= 'z')
1304 *d++ = (*s - ('a' - 1));
1305 else if ((*s >= '@' && *s <= '_') ||
1306 *s == '?' || (*s & 0x80))
1311 } else if (*s == '^') {
1316 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
1322 struct beeptime *newbeep;
1323 unsigned long ticks;
1325 ticks = GETTICKCOUNT();
1327 if (!term->beep_overloaded) {
1328 newbeep = smalloc(sizeof(struct beeptime));
1329 newbeep->ticks = ticks;
1330 newbeep->next = NULL;
1331 if (!term->beephead)
1332 term->beephead = newbeep;
1334 term->beeptail->next = newbeep;
1335 term->beeptail = newbeep;
1340 * Throw out any beeps that happened more than
1343 while (term->beephead &&
1344 term->beephead->ticks < ticks - cfg.bellovl_t) {
1345 struct beeptime *tmp = term->beephead;
1346 term->beephead = tmp->next;
1348 if (!term->beephead)
1349 term->beeptail = NULL;
1353 if (cfg.bellovl && term->beep_overloaded &&
1354 ticks - term->lastbeep >= (unsigned)cfg.bellovl_s) {
1356 * If we're currently overloaded and the
1357 * last beep was more than s seconds ago,
1358 * leave overload mode.
1360 term->beep_overloaded = FALSE;
1361 } else if (cfg.bellovl && !term->beep_overloaded &&
1362 term->nbeeps >= cfg.bellovl_n) {
1364 * Now, if we have n or more beeps
1365 * remaining in the queue, go into overload
1368 term->beep_overloaded = TRUE;
1370 term->lastbeep = ticks;
1373 * Perform an actual beep if we're not overloaded.
1375 if (!cfg.bellovl || !term->beep_overloaded) {
1376 beep(term->frontend, cfg.beep);
1377 if (cfg.beep == BELL_VISUAL) {
1378 term->in_vbell = TRUE;
1379 term->vbell_startpoint = ticks;
1387 if (term->curs.x == 0 &&
1388 (term->curs.y == 0 || term->wrap == 0))
1390 else if (term->curs.x == 0 && term->curs.y > 0)
1391 term->curs.x = term->cols - 1, term->curs.y--;
1392 else if (term->wrapnext)
1393 term->wrapnext = FALSE;
1397 term->seen_disp_event = TRUE;
1400 compatibility(VT100);
1404 compatibility(VT100);
1408 if (term->vt52_mode)
1409 term->termstate = VT52_ESC;
1411 compatibility(ANSIMIN);
1412 term->termstate = SEEN_ESC;
1413 term->esc_query = FALSE;
1418 term->wrapnext = FALSE;
1420 term->seen_disp_event = TRUE;
1421 term->paste_hold = 0;
1423 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1426 if (has_compat(SCOANSI)) {
1427 move(term, 0, 0, 0);
1428 erase_lots(term, FALSE, FALSE, TRUE);
1430 term->wrapnext = FALSE;
1431 term->seen_disp_event = 1;
1435 compatibility(VT100);
1437 if (term->curs.y == term->marg_b)
1438 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1439 else if (term->curs.y < term->rows - 1)
1444 term->wrapnext = FALSE;
1445 term->seen_disp_event = 1;
1446 term->paste_hold = 0;
1448 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1452 pos old_curs = term->curs;
1453 unsigned long *ldata = lineptr(term->curs.y);
1457 } while (term->curs.x < term->cols - 1 &&
1458 !term->tabs[term->curs.x]);
1460 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM) {
1461 if (term->curs.x >= term->cols / 2)
1462 term->curs.x = term->cols / 2 - 1;
1464 if (term->curs.x >= term->cols)
1465 term->curs.x = term->cols - 1;
1469 check_selection(term, old_curs, term->curs);
1471 term->seen_disp_event = TRUE;
1475 switch (term->termstate) {
1477 /* Only graphic characters get this far;
1478 * ctrls are stripped above */
1479 if (term->wrapnext && term->wrap) {
1480 term->cpos[1] |= LATTR_WRAPPED;
1481 if (term->curs.y == term->marg_b)
1482 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1483 else if (term->curs.y < term->rows - 1)
1487 term->wrapnext = FALSE;
1491 if (term->selstate != NO_SELECTION) {
1492 pos cursplus = term->curs;
1494 check_selection(term, term->curs, cursplus);
1496 if (((c & CSET_MASK) == ATTR_ASCII || (c & CSET_MASK) == 0) &&
1498 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1500 extern int wcwidth(wchar_t ucs);
1505 width = wcwidth((wchar_t) c);
1508 *term->cpos++ = c | term->curr_attr;
1509 if (++term->curs.x == term->cols) {
1510 *term->cpos |= LATTR_WRAPPED;
1511 if (term->curs.y == term->marg_b)
1512 scroll(term, term->marg_t, term->marg_b,
1514 else if (term->curs.y < term->rows - 1)
1519 *term->cpos++ = UCSWIDE | term->curr_attr;
1522 *term->cpos++ = c | term->curr_attr;
1529 if (term->curs.x == term->cols) {
1532 term->wrapnext = TRUE;
1533 if (term->wrap && term->vt52_mode) {
1534 term->cpos[1] |= LATTR_WRAPPED;
1535 if (term->curs.y == term->marg_b)
1536 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1537 else if (term->curs.y < term->rows - 1)
1541 term->wrapnext = FALSE;
1544 term->seen_disp_event = 1;
1549 * This state is virtually identical to SEEN_ESC, with the
1550 * exception that we have an OSC sequence in the pipeline,
1551 * and _if_ we see a backslash, we process it.
1555 term->termstate = TOPLEVEL;
1558 /* else fall through */
1560 if (c >= ' ' && c <= '/') {
1561 if (term->esc_query)
1562 term->esc_query = -1;
1564 term->esc_query = c;
1567 term->termstate = TOPLEVEL;
1568 switch (ANSI(c, term->esc_query)) {
1569 case '[': /* enter CSI mode */
1570 term->termstate = SEEN_CSI;
1571 term->esc_nargs = 1;
1572 term->esc_args[0] = ARG_DEFAULT;
1573 term->esc_query = FALSE;
1575 case ']': /* xterm escape sequences */
1576 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1577 compatibility(OTHER);
1578 term->termstate = SEEN_OSC;
1579 term->esc_args[0] = 0;
1581 case '7': /* save cursor */
1582 compatibility(VT100);
1583 save_cursor(term, TRUE);
1585 case '8': /* restore cursor */
1586 compatibility(VT100);
1587 save_cursor(term, FALSE);
1588 term->seen_disp_event = TRUE;
1591 compatibility(VT100);
1592 term->app_keypad_keys = TRUE;
1595 compatibility(VT100);
1596 term->app_keypad_keys = FALSE;
1598 case 'D': /* exactly equivalent to LF */
1599 compatibility(VT100);
1600 if (term->curs.y == term->marg_b)
1601 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1602 else if (term->curs.y < term->rows - 1)
1605 term->wrapnext = FALSE;
1606 term->seen_disp_event = TRUE;
1608 case 'E': /* exactly equivalent to CR-LF */
1609 compatibility(VT100);
1611 if (term->curs.y == term->marg_b)
1612 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1613 else if (term->curs.y < term->rows - 1)
1616 term->wrapnext = FALSE;
1617 term->seen_disp_event = TRUE;
1619 case 'M': /* reverse index - backwards LF */
1620 compatibility(VT100);
1621 if (term->curs.y == term->marg_t)
1622 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
1623 else if (term->curs.y > 0)
1626 term->wrapnext = FALSE;
1627 term->seen_disp_event = TRUE;
1629 case 'Z': /* terminal type query */
1630 compatibility(VT100);
1632 ldisc_send(term->ldisc, term->id_string,
1633 strlen(term->id_string), 0);
1635 case 'c': /* restore power-on settings */
1636 compatibility(VT100);
1638 if (term->ldisc) /* cause ldisc to notice changes */
1639 ldisc_send(term->ldisc, NULL, 0, 0);
1640 if (term->reset_132) {
1641 if (!cfg.no_remote_resize)
1642 request_resize(term->frontend, 80, term->rows);
1643 term->reset_132 = 0;
1647 term->seen_disp_event = TRUE;
1649 case 'H': /* set a tab */
1650 compatibility(VT100);
1651 term->tabs[term->curs.x] = TRUE;
1654 case ANSI('8', '#'): /* ESC # 8 fills screen with Es :-) */
1655 compatibility(VT100);
1657 unsigned long *ldata;
1661 for (i = 0; i < term->rows; i++) {
1663 for (j = 0; j < term->cols; j++)
1664 ldata[j] = ATTR_DEFAULT | 'E';
1665 ldata[term->cols] = 0;
1668 term->seen_disp_event = TRUE;
1669 scrtop.x = scrtop.y = 0;
1671 scrbot.y = term->rows;
1672 check_selection(term, scrtop, scrbot);
1676 case ANSI('3', '#'):
1677 case ANSI('4', '#'):
1678 case ANSI('5', '#'):
1679 case ANSI('6', '#'):
1680 compatibility(VT100);
1682 unsigned long nlattr;
1683 unsigned long *ldata;
1684 switch (ANSI(c, term->esc_query)) {
1685 case ANSI('3', '#'):
1688 case ANSI('4', '#'):
1691 case ANSI('5', '#'):
1692 nlattr = LATTR_NORM;
1694 default: /* spiritually case ANSI('6', '#'): */
1695 nlattr = LATTR_WIDE;
1698 ldata = lineptr(term->curs.y);
1699 ldata[term->cols] &= ~LATTR_MODE;
1700 ldata[term->cols] |= nlattr;
1704 case ANSI('A', '('):
1705 compatibility(VT100);
1706 if (!cfg.no_remote_charset)
1707 term->cset_attr[0] = ATTR_GBCHR;
1709 case ANSI('B', '('):
1710 compatibility(VT100);
1711 if (!cfg.no_remote_charset)
1712 term->cset_attr[0] = ATTR_ASCII;
1714 case ANSI('0', '('):
1715 compatibility(VT100);
1716 if (!cfg.no_remote_charset)
1717 term->cset_attr[0] = ATTR_LINEDRW;
1719 case ANSI('U', '('):
1720 compatibility(OTHER);
1721 if (!cfg.no_remote_charset)
1722 term->cset_attr[0] = ATTR_SCOACS;
1725 case ANSI('A', ')'):
1726 compatibility(VT100);
1727 if (!cfg.no_remote_charset)
1728 term->cset_attr[1] = ATTR_GBCHR;
1730 case ANSI('B', ')'):
1731 compatibility(VT100);
1732 if (!cfg.no_remote_charset)
1733 term->cset_attr[1] = ATTR_ASCII;
1735 case ANSI('0', ')'):
1736 compatibility(VT100);
1737 if (!cfg.no_remote_charset)
1738 term->cset_attr[1] = ATTR_LINEDRW;
1740 case ANSI('U', ')'):
1741 compatibility(OTHER);
1742 if (!cfg.no_remote_charset)
1743 term->cset_attr[1] = ATTR_SCOACS;
1746 case ANSI('8', '%'): /* Old Linux code */
1747 case ANSI('G', '%'):
1748 compatibility(OTHER);
1749 if (!cfg.no_remote_charset)
1752 case ANSI('@', '%'):
1753 compatibility(OTHER);
1754 if (!cfg.no_remote_charset)
1760 term->termstate = TOPLEVEL; /* default */
1762 if (term->esc_nargs <= ARGS_MAX) {
1763 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
1764 term->esc_args[term->esc_nargs - 1] = 0;
1765 term->esc_args[term->esc_nargs - 1] =
1766 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
1768 term->termstate = SEEN_CSI;
1769 } else if (c == ';') {
1770 if (++term->esc_nargs <= ARGS_MAX)
1771 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
1772 term->termstate = SEEN_CSI;
1773 } else if (c < '@') {
1774 if (term->esc_query)
1775 term->esc_query = -1;
1777 term->esc_query = TRUE;
1779 term->esc_query = c;
1780 term->termstate = SEEN_CSI;
1782 switch (ANSI(c, term->esc_query)) {
1783 case 'A': /* move up N lines */
1784 move(term, term->curs.x,
1785 term->curs.y - def(term->esc_args[0], 1), 1);
1786 term->seen_disp_event = TRUE;
1788 case 'e': /* move down N lines */
1789 compatibility(ANSI);
1792 move(term, term->curs.x,
1793 term->curs.y + def(term->esc_args[0], 1), 1);
1794 term->seen_disp_event = TRUE;
1796 case ANSI('c', '>'): /* report xterm version */
1797 compatibility(OTHER);
1798 /* this reports xterm version 136 so that VIM can
1799 use the drag messages from the mouse reporting */
1801 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
1803 case 'a': /* move right N cols */
1804 compatibility(ANSI);
1807 move(term, term->curs.x + def(term->esc_args[0], 1),
1809 term->seen_disp_event = TRUE;
1811 case 'D': /* move left N cols */
1812 move(term, term->curs.x - def(term->esc_args[0], 1),
1814 term->seen_disp_event = TRUE;
1816 case 'E': /* move down N lines and CR */
1817 compatibility(ANSI);
1819 term->curs.y + def(term->esc_args[0], 1), 1);
1820 term->seen_disp_event = TRUE;
1822 case 'F': /* move up N lines and CR */
1823 compatibility(ANSI);
1825 term->curs.y - def(term->esc_args[0], 1), 1);
1826 term->seen_disp_event = TRUE;
1829 case '`': /* set horizontal posn */
1830 compatibility(ANSI);
1831 move(term, def(term->esc_args[0], 1) - 1,
1833 term->seen_disp_event = TRUE;
1835 case 'd': /* set vertical posn */
1836 compatibility(ANSI);
1837 move(term, term->curs.x,
1838 ((term->dec_om ? term->marg_t : 0) +
1839 def(term->esc_args[0], 1) - 1),
1840 (term->dec_om ? 2 : 0));
1841 term->seen_disp_event = TRUE;
1844 case 'f': /* set horz and vert posns at once */
1845 if (term->esc_nargs < 2)
1846 term->esc_args[1] = ARG_DEFAULT;
1847 move(term, def(term->esc_args[1], 1) - 1,
1848 ((term->dec_om ? term->marg_t : 0) +
1849 def(term->esc_args[0], 1) - 1),
1850 (term->dec_om ? 2 : 0));
1851 term->seen_disp_event = TRUE;
1853 case 'J': /* erase screen or parts of it */
1855 unsigned int i = def(term->esc_args[0], 0) + 1;
1858 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
1861 term->seen_disp_event = TRUE;
1863 case 'K': /* erase line or parts of it */
1865 unsigned int i = def(term->esc_args[0], 0) + 1;
1868 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
1870 term->seen_disp_event = TRUE;
1872 case 'L': /* insert lines */
1873 compatibility(VT102);
1874 if (term->curs.y <= term->marg_b)
1875 scroll(term, term->curs.y, term->marg_b,
1876 -def(term->esc_args[0], 1), FALSE);
1878 term->seen_disp_event = TRUE;
1880 case 'M': /* delete lines */
1881 compatibility(VT102);
1882 if (term->curs.y <= term->marg_b)
1883 scroll(term, term->curs.y, term->marg_b,
1884 def(term->esc_args[0], 1),
1887 term->seen_disp_event = TRUE;
1889 case '@': /* insert chars */
1890 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1891 compatibility(VT102);
1892 insch(term, def(term->esc_args[0], 1));
1893 term->seen_disp_event = TRUE;
1895 case 'P': /* delete chars */
1896 compatibility(VT102);
1897 insch(term, -def(term->esc_args[0], 1));
1898 term->seen_disp_event = TRUE;
1900 case 'c': /* terminal type query */
1901 compatibility(VT100);
1902 /* This is the response for a VT102 */
1904 ldisc_send(term->ldisc, term->id_string,
1905 strlen(term->id_string), 0);
1907 case 'n': /* cursor position query */
1909 if (term->esc_args[0] == 6) {
1911 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
1913 ldisc_send(term->ldisc, buf, strlen(buf), 0);
1914 } else if (term->esc_args[0] == 5) {
1915 ldisc_send(term->ldisc, "\033[0n", 4, 0);
1919 case 'h': /* toggle modes to high */
1921 compatibility(VT100);
1924 for (i = 0; i < term->esc_nargs; i++)
1925 toggle_mode(term, term->esc_args[i],
1926 term->esc_query, TRUE);
1931 compatibility(VT100);
1933 if (term->esc_nargs != 1) break;
1934 if (term->esc_args[0] == 5 && *cfg.printer) {
1935 term->printing = TRUE;
1936 term->only_printing = !term->esc_query;
1937 term->print_state = 0;
1938 term_print_setup(term);
1939 } else if (term->esc_args[0] == 4 &&
1941 term_print_finish(term);
1945 case 'l': /* toggle modes to low */
1947 compatibility(VT100);
1950 for (i = 0; i < term->esc_nargs; i++)
1951 toggle_mode(term, term->esc_args[i],
1952 term->esc_query, FALSE);
1955 case 'g': /* clear tabs */
1956 compatibility(VT100);
1957 if (term->esc_nargs == 1) {
1958 if (term->esc_args[0] == 0) {
1959 term->tabs[term->curs.x] = FALSE;
1960 } else if (term->esc_args[0] == 3) {
1962 for (i = 0; i < term->cols; i++)
1963 term->tabs[i] = FALSE;
1967 case 'r': /* set scroll margins */
1968 compatibility(VT100);
1969 if (term->esc_nargs <= 2) {
1971 top = def(term->esc_args[0], 1) - 1;
1972 bot = (term->esc_nargs <= 1
1973 || term->esc_args[1] == 0 ?
1975 def(term->esc_args[1], term->rows)) - 1;
1976 if (bot >= term->rows)
1977 bot = term->rows - 1;
1978 /* VTTEST Bug 9 - if region is less than 2 lines
1979 * don't change region.
1981 if (bot - top > 0) {
1986 * I used to think the cursor should be
1987 * placed at the top of the newly marginned
1988 * area. Apparently not: VMS TPU falls over
1991 * Well actually it should for
1994 term->curs.y = (term->dec_om ?
1997 term->seen_disp_event = TRUE;
2001 case 'm': /* set graphics rendition */
2004 * A VT100 without the AVO only had one
2005 * attribute, either underline or
2006 * reverse video depending on the
2007 * cursor type, this was selected by
2011 * This is sometimes DIM, eg on the
2014 * This is sometimes INVIS various ANSI.
2016 * This like 22 disables BOLD, DIM and INVIS
2018 * The ANSI colours appear on any
2019 * terminal that has colour (obviously)
2020 * but the interaction between sgr0 and
2021 * the colours varies but is usually
2022 * related to the background colour
2023 * erase item. The interaction between
2024 * colour attributes and the mono ones
2025 * is also very implementation
2028 * The 39 and 49 attributes are likely
2029 * to be unimplemented.
2032 for (i = 0; i < term->esc_nargs; i++) {
2033 switch (def(term->esc_args[i], 0)) {
2034 case 0: /* restore defaults */
2035 term->curr_attr = ATTR_DEFAULT;
2037 case 1: /* enable bold */
2038 compatibility(VT100AVO);
2039 term->curr_attr |= ATTR_BOLD;
2041 case 21: /* (enable double underline) */
2042 compatibility(OTHER);
2043 case 4: /* enable underline */
2044 compatibility(VT100AVO);
2045 term->curr_attr |= ATTR_UNDER;
2047 case 5: /* enable blink */
2048 compatibility(VT100AVO);
2049 term->curr_attr |= ATTR_BLINK;
2051 case 7: /* enable reverse video */
2052 term->curr_attr |= ATTR_REVERSE;
2054 case 10: /* SCO acs off */
2055 compatibility(SCOANSI);
2056 if (cfg.no_remote_charset) break;
2057 term->sco_acs = 0; break;
2058 case 11: /* SCO acs on */
2059 compatibility(SCOANSI);
2060 if (cfg.no_remote_charset) break;
2061 term->sco_acs = 1; break;
2062 case 12: /* SCO acs on flipped */
2063 compatibility(SCOANSI);
2064 if (cfg.no_remote_charset) break;
2065 term->sco_acs = 2; break;
2066 case 22: /* disable bold */
2067 compatibility2(OTHER, VT220);
2068 term->curr_attr &= ~ATTR_BOLD;
2070 case 24: /* disable underline */
2071 compatibility2(OTHER, VT220);
2072 term->curr_attr &= ~ATTR_UNDER;
2074 case 25: /* disable blink */
2075 compatibility2(OTHER, VT220);
2076 term->curr_attr &= ~ATTR_BLINK;
2078 case 27: /* disable reverse video */
2079 compatibility2(OTHER, VT220);
2080 term->curr_attr &= ~ATTR_REVERSE;
2091 term->curr_attr &= ~ATTR_FGMASK;
2093 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
2095 case 39: /* default-foreground */
2096 term->curr_attr &= ~ATTR_FGMASK;
2097 term->curr_attr |= ATTR_DEFFG;
2108 term->curr_attr &= ~ATTR_BGMASK;
2110 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
2112 case 49: /* default-background */
2113 term->curr_attr &= ~ATTR_BGMASK;
2114 term->curr_attr |= ATTR_DEFBG;
2119 term->erase_char = (' ' | ATTR_ASCII |
2125 case 's': /* save cursor */
2126 save_cursor(term, TRUE);
2128 case 'u': /* restore cursor */
2129 save_cursor(term, FALSE);
2130 term->seen_disp_event = TRUE;
2132 case 't': /* set page size - ie window height */
2134 * VT340/VT420 sequence DECSLPP, DEC only allows values
2135 * 24/25/36/48/72/144 other emulators (eg dtterm) use
2136 * illegal values (eg first arg 1..9) for window changing
2139 if (term->esc_nargs <= 1
2140 && (term->esc_args[0] < 1 ||
2141 term->esc_args[0] >= 24)) {
2142 compatibility(VT340TEXT);
2143 if (!cfg.no_remote_resize)
2144 request_resize(term->frontend, term->cols,
2145 def(term->esc_args[0], 24));
2147 } else if (term->esc_nargs >= 1 &&
2148 term->esc_args[0] >= 1 &&
2149 term->esc_args[0] < 24) {
2150 compatibility(OTHER);
2152 switch (term->esc_args[0]) {
2156 set_iconic(term->frontend, FALSE);
2159 set_iconic(term->frontend, TRUE);
2162 if (term->esc_nargs >= 3) {
2163 if (!cfg.no_remote_resize)
2164 move_window(term->frontend,
2165 def(term->esc_args[1], 0),
2166 def(term->esc_args[2], 0));
2170 /* We should resize the window to a given
2171 * size in pixels here, but currently our
2172 * resizing code isn't healthy enough to
2177 set_zorder(term->frontend, TRUE);
2180 /* move to bottom */
2181 set_zorder(term->frontend, FALSE);
2184 refresh_window(term->frontend);
2187 if (term->esc_nargs >= 3) {
2188 if (!cfg.no_remote_resize)
2189 request_resize(term->frontend,
2190 def(term->esc_args[2], cfg.width),
2191 def(term->esc_args[1], cfg.height));
2195 if (term->esc_nargs >= 2)
2196 set_zoomed(term->frontend,
2202 ldisc_send(term->ldisc,
2203 is_iconic(term->frontend) ?
2204 "\033[1t" : "\033[2t", 4, 0);
2208 get_window_pos(term->frontend, &x, &y);
2209 len = sprintf(buf, "\033[3;%d;%dt", x, y);
2210 ldisc_send(term->ldisc, buf, len, 0);
2215 get_window_pixels(term->frontend, &x, &y);
2216 len = sprintf(buf, "\033[4;%d;%dt", x, y);
2217 ldisc_send(term->ldisc, buf, len, 0);
2222 len = sprintf(buf, "\033[8;%d;%dt",
2223 term->rows, term->cols);
2224 ldisc_send(term->ldisc, buf, len, 0);
2229 * Hmmm. Strictly speaking we
2230 * should return `the size of the
2231 * screen in characters', but
2232 * that's not easy: (a) window
2233 * furniture being what it is it's
2234 * hard to compute, and (b) in
2235 * resize-font mode maximising the
2236 * window wouldn't change the
2237 * number of characters. *shrug*. I
2238 * think we'll ignore it for the
2239 * moment and see if anyone
2240 * complains, and then ask them
2241 * what they would like it to do.
2246 p = get_window_title(term->frontend, TRUE);
2248 ldisc_send(term->ldisc, "\033]L", 3, 0);
2249 ldisc_send(term->ldisc, p, len, 0);
2250 ldisc_send(term->ldisc, "\033\\", 2, 0);
2255 p = get_window_title(term->frontend,FALSE);
2257 ldisc_send(term->ldisc, "\033]l", 3, 0);
2258 ldisc_send(term->ldisc, p, len, 0);
2259 ldisc_send(term->ldisc, "\033\\", 2, 0);
2266 compatibility(SCOANSI);
2267 scroll(term, term->marg_t, term->marg_b,
2268 def(term->esc_args[0], 1), TRUE);
2270 term->wrapnext = FALSE;
2271 term->seen_disp_event = TRUE;
2274 compatibility(SCOANSI);
2275 scroll(term, term->marg_t, term->marg_b,
2276 -def(term->esc_args[0], 1), TRUE);
2278 term->wrapnext = FALSE;
2279 term->seen_disp_event = TRUE;
2281 case ANSI('|', '*'):
2282 /* VT420 sequence DECSNLS
2283 * Set number of lines on screen
2284 * VT420 uses VGA like hardware and can support any size in
2285 * reasonable range (24..49 AIUI) with no default specified.
2287 compatibility(VT420);
2288 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
2289 if (!cfg.no_remote_resize)
2290 request_resize(term->frontend, term->cols,
2291 def(term->esc_args[0],
2296 case ANSI('|', '$'):
2297 /* VT340/VT420 sequence DECSCPP
2298 * Set number of columns per page
2299 * Docs imply range is only 80 or 132, but I'll allow any.
2301 compatibility(VT340TEXT);
2302 if (term->esc_nargs <= 1) {
2303 if (!cfg.no_remote_resize)
2304 request_resize(term->frontend,
2305 def(term->esc_args[0],
2306 cfg.width), term->rows);
2310 case 'X': /* write N spaces w/o moving cursor */
2311 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
2312 compatibility(ANSIMIN);
2314 int n = def(term->esc_args[0], 1);
2316 unsigned long *p = term->cpos;
2317 if (n > term->cols - term->curs.x)
2318 n = term->cols - term->curs.x;
2319 cursplus = term->curs;
2321 check_selection(term, term->curs, cursplus);
2323 *p++ = term->erase_char;
2324 term->seen_disp_event = TRUE;
2327 case 'x': /* report terminal characteristics */
2328 compatibility(VT100);
2331 int i = def(term->esc_args[0], 0);
2332 if (i == 0 || i == 1) {
2333 strcpy(buf, "\033[2;1;1;112;112;1;0x");
2335 ldisc_send(term->ldisc, buf, 20, 0);
2339 case 'Z': /* BackTab for xterm */
2340 compatibility(OTHER);
2342 int i = def(term->esc_args[0], 1);
2343 pos old_curs = term->curs;
2345 for(;i>0 && term->curs.x>0; i--) {
2348 } while (term->curs.x >0 &&
2349 !term->tabs[term->curs.x]);
2352 check_selection(term, old_curs, term->curs);
2355 case ANSI('L', '='):
2356 compatibility(OTHER);
2357 term->use_bce = (term->esc_args[0] <= 0);
2358 term->erase_char = ERASE_CHAR;
2360 term->erase_char = (' ' | ATTR_ASCII |
2362 (ATTR_FGMASK | ATTR_BGMASK)));
2364 case ANSI('E', '='):
2365 compatibility(OTHER);
2366 term->blink_is_real = (term->esc_args[0] >= 1);
2368 case ANSI('p', '"'):
2370 * Allow the host to make this emulator a
2371 * 'perfect' VT102. This first appeared in
2372 * the VT220, but we do need to get back to
2373 * PuTTY mode so I won't check it.
2375 * The arg in 40..42,50 are a PuTTY extension.
2376 * The 2nd arg, 8bit vs 7bit is not checked.
2378 * Setting VT102 mode should also change
2379 * the Fkeys to generate PF* codes as a
2380 * real VT102 has no Fkeys. The VT220 does
2381 * this, F11..F13 become ESC,BS,LF other
2382 * Fkeys send nothing.
2384 * Note ESC c will NOT change this!
2387 switch (term->esc_args[0]) {
2389 term->compatibility_level &= ~TM_VTXXX;
2390 term->compatibility_level |= TM_VT102;
2393 term->compatibility_level &= ~TM_VTXXX;
2394 term->compatibility_level |= TM_VT220;
2398 if (term->esc_args[0] > 60 &&
2399 term->esc_args[0] < 70)
2400 term->compatibility_level |= TM_VTXXX;
2404 term->compatibility_level &= TM_VTXXX;
2407 term->compatibility_level = TM_PUTTY;
2410 term->compatibility_level = TM_SCOANSI;
2414 term->compatibility_level = TM_PUTTY;
2420 /* Change the response to CSI c */
2421 if (term->esc_args[0] == 50) {
2424 strcpy(term->id_string, "\033[?");
2425 for (i = 1; i < term->esc_nargs; i++) {
2427 strcat(term->id_string, ";");
2428 sprintf(lbuf, "%d", term->esc_args[i]);
2429 strcat(term->id_string, lbuf);
2431 strcat(term->id_string, "c");
2434 /* Is this a good idea ?
2435 * Well we should do a soft reset at this point ...
2437 if (!has_compat(VT420) && has_compat(VT100)) {
2438 if (!cfg.no_remote_resize) {
2439 if (term->reset_132)
2440 request_resize(132, 24);
2442 request_resize(80, 24);
2450 term->osc_w = FALSE;
2452 case 'P': /* Linux palette sequence */
2453 term->termstate = SEEN_OSC_P;
2454 term->osc_strlen = 0;
2456 case 'R': /* Linux palette reset */
2457 palette_reset(term->frontend);
2458 term_invalidate(term);
2459 term->termstate = TOPLEVEL;
2461 case 'W': /* word-set */
2462 term->termstate = SEEN_OSC_W;
2475 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
2479 * Grotty hack to support xterm and DECterm title
2480 * sequences concurrently.
2482 if (term->esc_args[0] == 2) {
2483 term->esc_args[0] = 1;
2486 /* else fall through */
2488 term->termstate = OSC_STRING;
2489 term->osc_strlen = 0;
2494 * This OSC stuff is EVIL. It takes just one character to get into
2495 * sysline mode and it's not initially obvious how to get out.
2496 * So I've added CR and LF as string aborts.
2497 * This shouldn't effect compatibility as I believe embedded
2498 * control characters are supposed to be interpreted (maybe?)
2499 * and they don't display anything useful anyway.
2503 if (c == '\n' || c == '\r') {
2504 term->termstate = TOPLEVEL;
2505 } else if (c == 0234 || c == '\007') {
2507 * These characters terminate the string; ST and BEL
2508 * terminate the sequence and trigger instant
2509 * processing of it, whereas ESC goes back to SEEN_ESC
2510 * mode unless it is followed by \, in which case it is
2511 * synonymous with ST in the first place.
2514 term->termstate = TOPLEVEL;
2515 } else if (c == '\033')
2516 term->termstate = OSC_MAYBE_ST;
2517 else if (term->osc_strlen < OSC_STR_MAX)
2518 term->osc_string[term->osc_strlen++] = c;
2522 int max = (term->osc_strlen == 0 ? 21 : 16);
2524 if (c >= '0' && c <= '9')
2526 else if (c >= 'A' && c <= 'A' + max - 10)
2528 else if (c >= 'a' && c <= 'a' + max - 10)
2531 term->termstate = TOPLEVEL;
2534 term->osc_string[term->osc_strlen++] = val;
2535 if (term->osc_strlen >= 7) {
2536 palette_set(term->frontend, term->osc_string[0],
2537 term->osc_string[1] * 16 + term->osc_string[2],
2538 term->osc_string[3] * 16 + term->osc_string[4],
2539 term->osc_string[5] * 16 + term->osc_string[6]);
2540 term_invalidate(term);
2541 term->termstate = TOPLEVEL;
2557 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
2560 term->termstate = OSC_STRING;
2561 term->osc_strlen = 0;
2565 term->termstate = TOPLEVEL;
2566 term->seen_disp_event = TRUE;
2569 move(term, term->curs.x, term->curs.y - 1, 1);
2572 move(term, term->curs.x, term->curs.y + 1, 1);
2575 move(term, term->curs.x + 1, term->curs.y, 1);
2578 move(term, term->curs.x - 1, term->curs.y, 1);
2581 * From the VT100 Manual
2582 * NOTE: The special graphics characters in the VT100
2583 * are different from those in the VT52
2585 * From VT102 manual:
2586 * 137 _ Blank - Same
2587 * 140 ` Reserved - Humm.
2588 * 141 a Solid rectangle - Similar
2589 * 142 b 1/ - Top half of fraction for the
2590 * 143 c 3/ - subscript numbers below.
2593 * 146 f Degrees - Same
2594 * 147 g Plus or minus - Same
2596 * 151 i Ellipsis (dots)
2599 * 154 l Bar at scan 0
2600 * 155 m Bar at scan 1
2601 * 156 n Bar at scan 2
2602 * 157 o Bar at scan 3 - Similar
2603 * 160 p Bar at scan 4 - Similar
2604 * 161 q Bar at scan 5 - Similar
2605 * 162 r Bar at scan 6 - Same
2606 * 163 s Bar at scan 7 - Similar
2621 term->cset_attr[term->cset = 0] = ATTR_LINEDRW;
2624 term->cset_attr[term->cset = 0] = ATTR_ASCII;
2627 move(term, 0, 0, 0);
2630 if (term->curs.y == 0)
2631 scroll(term, 0, term->rows - 1, -1, TRUE);
2632 else if (term->curs.y > 0)
2635 term->wrapnext = FALSE;
2638 erase_lots(term, FALSE, FALSE, TRUE);
2642 erase_lots(term, TRUE, FALSE, TRUE);
2646 /* XXX Print cursor line */
2649 /* XXX Start controller mode */
2652 /* XXX Stop controller mode */
2656 term->termstate = VT52_Y1;
2660 ldisc_send(term->ldisc, "\033/Z", 3, 0);
2663 term->app_keypad_keys = TRUE;
2666 term->app_keypad_keys = FALSE;
2669 /* XXX This should switch to VT100 mode not current or default
2670 * VT mode. But this will only have effect in a VT220+
2673 term->vt52_mode = FALSE;
2674 term->blink_is_real = cfg.blinktext;
2678 /* XXX Enter auto print mode */
2681 /* XXX Exit auto print mode */
2684 /* XXX Print screen */
2690 /* compatibility(ATARI) */
2691 move(term, 0, 0, 0);
2692 erase_lots(term, FALSE, FALSE, TRUE);
2696 /* compatibility(ATARI) */
2697 if (term->curs.y <= term->marg_b)
2698 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
2701 /* compatibility(ATARI) */
2702 if (term->curs.y <= term->marg_b)
2703 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
2706 /* compatibility(ATARI) */
2707 term->termstate = VT52_FG;
2710 /* compatibility(ATARI) */
2711 term->termstate = VT52_BG;
2714 /* compatibility(ATARI) */
2715 erase_lots(term, FALSE, TRUE, FALSE);
2719 /* compatibility(ATARI) */
2720 term->cursor_on = TRUE;
2723 /* compatibility(ATARI) */
2724 term->cursor_on = FALSE;
2726 /* case 'j': Save cursor position - broken on ST */
2727 /* case 'k': Restore cursor position */
2729 /* compatibility(ATARI) */
2730 erase_lots(term, TRUE, TRUE, TRUE);
2732 term->wrapnext = FALSE;
2736 /* compatibility(ATARI) */
2737 erase_lots(term, TRUE, TRUE, FALSE);
2740 /* compatibility(ATARI) */
2741 term->curr_attr |= ATTR_REVERSE;
2744 /* compatibility(ATARI) */
2745 term->curr_attr &= ~ATTR_REVERSE;
2747 case 'v': /* wrap Autowrap on - Wyse style */
2748 /* compatibility(ATARI) */
2751 case 'w': /* Autowrap off */
2752 /* compatibility(ATARI) */
2757 /* compatibility(OTHER) */
2758 term->vt52_bold = FALSE;
2759 term->curr_attr = ATTR_DEFAULT;
2761 term->erase_char = (' ' | ATTR_ASCII |
2763 (ATTR_FGMASK | ATTR_BGMASK)));
2766 /* compatibility(VI50) */
2767 term->curr_attr |= ATTR_UNDER;
2770 /* compatibility(VI50) */
2771 term->curr_attr &= ~ATTR_UNDER;
2774 /* compatibility(VI50) */
2775 term->vt52_bold = TRUE;
2776 term->curr_attr |= ATTR_BOLD;
2779 /* compatibility(VI50) */
2780 term->vt52_bold = FALSE;
2781 term->curr_attr &= ~ATTR_BOLD;
2787 term->termstate = VT52_Y2;
2788 move(term, term->curs.x, c - ' ', 0);
2791 term->termstate = TOPLEVEL;
2792 move(term, c - ' ', term->curs.y, 0);
2797 term->termstate = TOPLEVEL;
2798 term->curr_attr &= ~ATTR_FGMASK;
2799 term->curr_attr &= ~ATTR_BOLD;
2800 term->curr_attr |= (c & 0x7) << ATTR_FGSHIFT;
2801 if ((c & 0x8) || term->vt52_bold)
2802 term->curr_attr |= ATTR_BOLD;
2805 term->erase_char = (' ' | ATTR_ASCII |
2807 (ATTR_FGMASK | ATTR_BGMASK)));
2810 term->termstate = TOPLEVEL;
2811 term->curr_attr &= ~ATTR_BGMASK;
2812 term->curr_attr &= ~ATTR_BLINK;
2813 term->curr_attr |= (c & 0x7) << ATTR_BGSHIFT;
2815 /* Note: bold background */
2817 term->curr_attr |= ATTR_BLINK;
2820 term->erase_char = (' ' | ATTR_ASCII |
2822 (ATTR_FGMASK | ATTR_BGMASK)));
2825 default: break; /* placate gcc warning about enum use */
2827 if (term->selstate != NO_SELECTION) {
2828 pos cursplus = term->curs;
2830 check_selection(term, term->curs, cursplus);
2834 term_print_flush(term);
2839 * Compare two lines to determine whether they are sufficiently
2840 * alike to scroll-optimise one to the other. Return the degree of
2843 static int linecmp(Terminal *term, unsigned long *a, unsigned long *b)
2847 for (i = n = 0; i < term->cols; i++)
2848 n += (*a++ == *b++);
2854 * Given a context, update the window. Out of paranoia, we don't
2855 * allow WM_PAINT responses to do scrolling optimisations.
2857 static void do_paint(Terminal *term, Context ctx, int may_optimise)
2859 int i, j, our_curs_y;
2860 unsigned long rv, cursor;
2863 long cursor_background = ERASE_CHAR;
2864 unsigned long ticks;
2867 * Check the visual bell state.
2869 if (term->in_vbell) {
2870 ticks = GETTICKCOUNT();
2871 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
2872 term->in_vbell = FALSE;
2875 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
2878 * screen array, disptop, scrtop,
2880 * cfg.blinkpc, blink_is_real, tblinker,
2881 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
2884 /* Has the cursor position or type changed ? */
2885 if (term->cursor_on) {
2886 if (term->has_focus) {
2887 if (term->blinker || !cfg.blink_cur)
2888 cursor = TATTR_ACTCURS;
2892 cursor = TATTR_PASCURS;
2894 cursor |= TATTR_RIGHTCURS;
2897 our_curs_y = term->curs.y - term->disptop;
2899 if (term->dispcurs && (term->curstype != cursor ||
2901 term->disptext + our_curs_y * (term->cols + 1) +
2903 if (term->dispcurs > term->disptext &&
2904 (*term->dispcurs & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
2905 term->dispcurs[-1] |= ATTR_INVALID;
2906 if ( (term->dispcurs[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
2907 term->dispcurs[1] |= ATTR_INVALID;
2908 *term->dispcurs |= ATTR_INVALID;
2911 term->dispcurs = NULL;
2913 /* The normal screen data */
2914 for (i = 0; i < term->rows; i++) {
2915 unsigned long *ldata;
2917 int idx, dirty_line, dirty_run, selected;
2918 unsigned long attr = 0;
2919 int updated_line = 0;
2922 int last_run_dirty = 0;
2924 scrpos.y = i + term->disptop;
2925 ldata = lineptr(scrpos.y);
2926 lattr = (ldata[term->cols] & LATTR_MODE);
2928 idx = i * (term->cols + 1);
2929 dirty_run = dirty_line = (ldata[term->cols] !=
2930 term->disptext[idx + term->cols]);
2931 term->disptext[idx + term->cols] = ldata[term->cols];
2933 for (j = 0; j < term->cols; j++, idx++) {
2934 unsigned long tattr, tchar;
2935 unsigned long *d = ldata + j;
2939 tchar = (*d & (CHAR_MASK | CSET_MASK));
2940 tattr = (*d & (ATTR_MASK ^ CSET_MASK));
2941 switch (tchar & CSET_MASK) {
2943 tchar = unitab_line[tchar & 0xFF];
2946 tchar = unitab_xterm[tchar & 0xFF];
2949 tchar = unitab_scoacs[tchar&0xFF];
2952 tattr |= (tchar & CSET_MASK);
2954 if ((d[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
2957 /* Video reversing things */
2958 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
2959 if (term->seltype == LEXICOGRAPHIC)
2960 selected = (posle(term->selstart, scrpos) &&
2961 poslt(scrpos, term->selend));
2963 selected = (posPle(term->selstart, scrpos) &&
2964 posPlt(scrpos, term->selend));
2968 ^ (selected ? ATTR_REVERSE : 0));
2970 /* 'Real' blinking ? */
2971 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
2972 if (term->has_focus && term->tblinker) {
2974 tattr &= ~CSET_MASK;
2977 tattr &= ~ATTR_BLINK;
2981 * Check the font we'll _probably_ be using to see if
2982 * the character is wide when we don't want it to be.
2984 if ((tchar | tattr) != (term->disptext[idx]& ~ATTR_NARROW)) {
2985 if ((tattr & ATTR_WIDE) == 0 &&
2986 CharWidth(ctx, (tchar | tattr) & 0xFFFF) == 2)
2987 tattr |= ATTR_NARROW;
2988 } else if (term->disptext[idx]&ATTR_NARROW)
2989 tattr |= ATTR_NARROW;
2991 /* Cursor here ? Save the 'background' */
2992 if (i == our_curs_y && j == term->curs.x) {
2993 cursor_background = tattr | tchar;
2994 term->dispcurs = term->disptext + idx;
2997 if ((term->disptext[idx] ^ tattr) & ATTR_WIDE)
3000 break_run = (tattr != attr || j - start >= sizeof(ch));
3002 /* Special hack for VT100 Linedraw glyphs */
3003 if ((attr & CSET_MASK) == 0x2300 && tchar >= 0xBA
3004 && tchar <= 0xBD) break_run = TRUE;
3006 if (!dbcs_screenfont && !dirty_line) {
3007 if ((tchar | tattr) == term->disptext[idx])
3009 else if (!dirty_run && ccount == 1)
3014 if ((dirty_run || last_run_dirty) && ccount > 0) {
3015 do_text(ctx, start, i, ch, ccount, attr, lattr);
3021 if (dbcs_screenfont)
3022 last_run_dirty = dirty_run;
3023 dirty_run = dirty_line;
3026 if ((tchar | tattr) != term->disptext[idx])
3028 ch[ccount++] = (char) tchar;
3029 term->disptext[idx] = tchar | tattr;
3031 /* If it's a wide char step along to the next one. */
3032 if (tattr & ATTR_WIDE) {
3033 if (++j < term->cols) {
3036 /* Cursor is here ? Ouch! */
3037 if (i == our_curs_y && j == term->curs.x) {
3038 cursor_background = *d;
3039 term->dispcurs = term->disptext + idx;
3041 if (term->disptext[idx] != *d)
3043 term->disptext[idx] = *d;
3047 if (dirty_run && ccount > 0) {
3048 do_text(ctx, start, i, ch, ccount, attr, lattr);
3052 /* Cursor on this line ? (and changed) */
3053 if (i == our_curs_y && (term->curstype != cursor || updated_line)) {
3054 ch[0] = (char) (cursor_background & CHAR_MASK);
3055 attr = (cursor_background & ATTR_MASK) | cursor;
3056 do_cursor(ctx, term->curs.x, i, ch, 1, attr, lattr);
3057 term->curstype = cursor;
3063 * Flick the switch that says if blinking things should be shown or hidden.
3066 void term_blink(Terminal *term, int flg)
3068 long now, blink_diff;
3070 now = GETTICKCOUNT();
3071 blink_diff = now - term->last_tblink;
3073 /* Make sure the text blinks no more than 2Hz; we'll use 0.45 s period. */
3074 if (blink_diff < 0 || blink_diff > (TICKSPERSEC * 9 / 20)) {
3075 term->last_tblink = now;
3076 term->tblinker = !term->tblinker;
3081 term->last_blink = now;
3085 blink_diff = now - term->last_blink;
3087 /* Make sure the cursor blinks no faster than system blink rate */
3088 if (blink_diff >= 0 && blink_diff < (long) CURSORBLINK)
3091 term->last_blink = now;
3092 term->blinker = !term->blinker;
3096 * Invalidate the whole screen so it will be repainted in full.
3098 void term_invalidate(Terminal *term)
3102 for (i = 0; i < term->rows * (term->cols + 1); i++)
3103 term->disptext[i] = ATTR_INVALID;
3107 * Paint the window in response to a WM_PAINT message.
3109 void term_paint(Terminal *term, Context ctx,
3110 int left, int top, int right, int bottom, int immediately)
3113 if (left < 0) left = 0;
3114 if (top < 0) top = 0;
3115 if (right >= term->cols) right = term->cols-1;
3116 if (bottom >= term->rows) bottom = term->rows-1;
3118 for (i = top; i <= bottom && i < term->rows; i++) {
3119 if ((term->disptext[i * (term->cols + 1) + term->cols] &
3120 LATTR_MODE) == LATTR_NORM)
3121 for (j = left; j <= right && j < term->cols; j++)
3122 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
3124 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
3125 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
3128 /* This should happen soon enough, also for some reason it sometimes
3129 * fails to actually do anything when re-sizing ... painting the wrong
3133 do_paint (term, ctx, FALSE);
3137 * Attempt to scroll the scrollback. The second parameter gives the
3138 * position we want to scroll to; the first is +1 to denote that
3139 * this position is relative to the beginning of the scrollback, -1
3140 * to denote it is relative to the end, and 0 to denote that it is
3141 * relative to the current position.
3143 void term_scroll(Terminal *term, int rel, int where)
3145 int sbtop = -count234(term->scrollback);
3147 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
3148 if (term->disptop < sbtop)
3149 term->disptop = sbtop;
3150 if (term->disptop > 0)
3156 static void clipme(Terminal *term, pos top, pos bottom, int rect)
3159 wchar_t *wbptr; /* where next char goes within workbuf */
3161 int wblen = 0; /* workbuf len */
3162 int buflen; /* amount of memory allocated to workbuf */
3164 buflen = 5120; /* Default size */
3165 workbuf = smalloc(buflen * sizeof(wchar_t));
3166 wbptr = workbuf; /* start filling here */
3167 old_top_x = top.x; /* needed for rect==1 */
3169 while (poslt(top, bottom)) {
3171 unsigned long *ldata = lineptr(top.y);
3175 * nlpos will point at the maximum position on this line we
3176 * should copy up to. So we start it at the end of the
3180 nlpos.x = term->cols;
3183 * ... move it backwards if there's unused space at the end
3184 * of the line (and also set `nl' if this is the case,
3185 * because in normal selection mode this means we need a
3186 * newline at the end)...
3188 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3189 while (((ldata[nlpos.x - 1] & 0xFF) == 0x20 ||
3190 (DIRECT_CHAR(ldata[nlpos.x - 1]) &&
3191 (ldata[nlpos.x - 1] & CHAR_MASK) == 0x20))
3192 && poslt(top, nlpos))
3194 if (poslt(nlpos, bottom))
3199 * ... and then clip it to the terminal x coordinate if
3200 * we're doing rectangular selection. (In this case we
3201 * still did the above, so that copying e.g. the right-hand
3202 * column from a table doesn't fill with spaces on the
3206 if (nlpos.x > bottom.x)
3208 nl = (top.y < bottom.y);
3211 while (poslt(top, bottom) && poslt(top, nlpos)) {
3214 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
3216 wchar_t cbuf[16], *p;
3217 int uc = (ldata[top.x] & 0xFFFF);
3220 if (uc == UCSWIDE) {
3225 switch (uc & CSET_MASK) {
3228 uc = unitab_xterm[uc & 0xFF];
3232 uc = unitab_line[uc & 0xFF];
3235 uc = unitab_scoacs[uc&0xFF];
3238 switch (uc & CSET_MASK) {
3240 uc = unitab_font[uc & 0xFF];
3243 uc = unitab_oemcp[uc & 0xFF];
3247 set = (uc & CSET_MASK);
3248 c = (uc & CHAR_MASK);
3252 if (DIRECT_FONT(uc)) {
3253 if (c >= ' ' && c != 0x7F) {
3254 unsigned char buf[4];
3257 if (is_dbcs_leadbyte(font_codepage, (BYTE) c)) {
3259 buf[1] = (unsigned char) ldata[top.x + 1];
3260 rv = mb_to_wc(font_codepage, 0, buf, 2, wbuf, 4);
3264 rv = mb_to_wc(font_codepage, 0, buf, 1, wbuf, 4);
3268 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
3275 for (p = cbuf; *p; p++) {
3276 /* Enough overhead for trailing NL and nul */
3277 if (wblen >= buflen - 16) {
3280 sizeof(wchar_t) * (buflen += 100));
3281 wbptr = workbuf + wblen;
3290 for (i = 0; i < sel_nl_sz; i++) {
3292 *wbptr++ = sel_nl[i];
3296 top.x = rect ? old_top_x : 0;
3298 #if SELECTION_NUL_TERMINATED
3302 write_clip(term->frontend, workbuf, wblen, FALSE); /* transfer to clipbd */
3303 if (buflen > 0) /* indicates we allocated this buffer */
3307 void term_copyall(Terminal *term)
3310 top.y = -count234(term->scrollback);
3312 clipme(term, top, term->curs, 0);
3316 * The wordness array is mainly for deciding the disposition of the
3317 * US-ASCII characters.
3319 static int wordtype(Terminal *term, int uc)
3322 int start, end, ctype;
3324 static const struct ucsword ucs_words[] = {
3330 0x037e, 0x037e, 1}, /* Greek question mark */
3332 0x0387, 0x0387, 1}, /* Greek ano teleia */
3334 0x055a, 0x055f, 1}, /* Armenian punctuation */
3336 0x0589, 0x0589, 1}, /* Armenian full stop */
3338 0x0700, 0x070d, 1}, /* Syriac punctuation */
3340 0x104a, 0x104f, 1}, /* Myanmar punctuation */
3342 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
3344 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
3346 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
3348 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
3350 0x1800, 0x180a, 1}, /* Mongolian punctuation */
3352 0x2000, 0x200a, 0}, /* Various spaces */
3354 0x2070, 0x207f, 2}, /* superscript */
3356 0x2080, 0x208f, 2}, /* subscript */
3358 0x200b, 0x27ff, 1}, /* punctuation and symbols */
3360 0x3000, 0x3000, 0}, /* ideographic space */
3362 0x3001, 0x3020, 1}, /* ideographic punctuation */
3364 0x303f, 0x309f, 3}, /* Hiragana */
3366 0x30a0, 0x30ff, 3}, /* Katakana */
3368 0x3300, 0x9fff, 3}, /* CJK Ideographs */
3370 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
3372 0xf900, 0xfaff, 3}, /* CJK Ideographs */
3374 0xfe30, 0xfe6b, 1}, /* punctuation forms */
3376 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
3378 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
3380 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
3382 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
3384 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
3388 const struct ucsword *wptr;
3390 uc &= (CSET_MASK | CHAR_MASK);
3392 switch (uc & CSET_MASK) {
3394 uc = unitab_xterm[uc & 0xFF];
3397 uc = unitab_line[uc & 0xFF];
3400 uc = unitab_scoacs[uc&0xFF];
3403 switch (uc & CSET_MASK) {
3405 uc = unitab_font[uc & 0xFF];
3408 uc = unitab_oemcp[uc & 0xFF];
3412 /* For DBCS font's I can't do anything usefull. Even this will sometimes
3413 * fail as there's such a thing as a double width space. :-(
3415 if (dbcs_screenfont && font_codepage == line_codepage)
3419 return term->wordness[uc];
3421 for (wptr = ucs_words; wptr->start; wptr++) {
3422 if (uc >= wptr->start && uc <= wptr->end)
3430 * Spread the selection outwards according to the selection mode.
3432 static pos sel_spread_half(Terminal *term, pos p, int dir)
3434 unsigned long *ldata;
3436 int topy = -count234(term->scrollback);
3438 ldata = lineptr(p.y);
3440 switch (term->selmode) {
3443 * In this mode, every character is a separate unit, except
3444 * for runs of spaces at the end of a non-wrapping line.
3446 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3447 unsigned long *q = ldata + term->cols;
3448 while (q > ldata && (q[-1] & CHAR_MASK) == 0x20)
3450 if (q == ldata + term->cols)
3452 if (p.x >= q - ldata)
3453 p.x = (dir == -1 ? q - ldata : term->cols - 1);
3458 * In this mode, the units are maximal runs of characters
3459 * whose `wordness' has the same value.
3461 wvalue = wordtype(term, ldata[p.x]);
3464 if (p.x < term->cols-1) {
3465 if (wordtype(term, ldata[p.x + 1]) == wvalue)
3470 if (ldata[term->cols] & LATTR_WRAPPED) {
3471 unsigned long *ldata2;
3472 ldata2 = lineptr(p.y+1);
3473 if (wordtype(term, ldata2[0]) == wvalue) {
3486 if (wordtype(term, ldata[p.x - 1]) == wvalue)
3491 unsigned long *ldata2;
3494 ldata2 = lineptr(p.y-1);
3495 if ((ldata2[term->cols] & LATTR_WRAPPED) &&
3496 wordtype(term, ldata2[term->cols-1]) == wvalue) {
3508 * In this mode, every line is a unit.
3510 p.x = (dir == -1 ? 0 : term->cols - 1);
3516 static void sel_spread(Terminal *term)
3518 if (term->seltype == LEXICOGRAPHIC) {
3519 term->selstart = sel_spread_half(term, term->selstart, -1);
3520 decpos(term->selend);
3521 term->selend = sel_spread_half(term, term->selend, +1);
3522 incpos(term->selend);
3526 void term_do_paste(Terminal *term)
3531 get_clip(term->frontend, &data, &len);
3532 if (data && len > 0) {
3535 term_seen_key_event(term); /* pasted data counts */
3537 if (term->paste_buffer)
3538 sfree(term->paste_buffer);
3539 term->paste_pos = term->paste_hold = term->paste_len = 0;
3540 term->paste_buffer = smalloc(len * sizeof(wchar_t));
3543 while (p < data + len) {
3544 while (p < data + len &&
3545 !(p <= data + len - sel_nl_sz &&
3546 !memcmp(p, sel_nl, sizeof(sel_nl))))
3551 for (i = 0; i < p - q; i++) {
3552 term->paste_buffer[term->paste_len++] = q[i];
3556 if (p <= data + len - sel_nl_sz &&
3557 !memcmp(p, sel_nl, sizeof(sel_nl))) {
3558 term->paste_buffer[term->paste_len++] = '\r';
3564 /* Assume a small paste will be OK in one go. */
3565 if (term->paste_len < 256) {
3567 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
3568 if (term->paste_buffer)
3569 sfree(term->paste_buffer);
3570 term->paste_buffer = 0;
3571 term->paste_pos = term->paste_hold = term->paste_len = 0;
3574 get_clip(term->frontend, NULL, NULL);
3577 void term_mouse(Terminal *term, Mouse_Button b, Mouse_Action a, int x, int y,
3578 int shift, int ctrl, int alt)
3581 unsigned long *ldata;
3582 int raw_mouse = (term->xterm_mouse &&
3583 !cfg.no_mouse_rep &&
3584 !(cfg.mouse_override && shift));
3585 int default_seltype;
3589 if (a == MA_DRAG && !raw_mouse)
3590 term_scroll(term, 0, -1);
3592 if (y >= term->rows) {
3594 if (a == MA_DRAG && !raw_mouse)
3595 term_scroll(term, 0, +1);
3604 if (x >= term->cols)
3607 selpoint.y = y + term->disptop;
3609 ldata = lineptr(selpoint.y);
3610 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM)
3614 int encstate = 0, r, c;
3621 encstate = 0x20; /* left button down */
3632 case MBT_WHEEL_DOWN:
3635 default: break; /* placate gcc warning about enum use */
3639 if (term->xterm_mouse == 1)
3645 term->mouse_is_down = 0;
3648 if (term->mouse_is_down == b)
3650 term->mouse_is_down = b;
3652 default: break; /* placate gcc warning about enum use */
3661 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
3662 ldisc_send(term->ldisc, abuf, 6, 0);
3667 b = translate_button(term->frontend, b);
3670 * Set the selection type (rectangular or normal) at the start
3671 * of a selection attempt, from the state of Alt.
3673 if (!alt ^ !cfg.rect_select)
3674 default_seltype = RECTANGULAR;
3676 default_seltype = LEXICOGRAPHIC;
3678 if (term->selstate == NO_SELECTION) {
3679 term->seltype = default_seltype;
3682 if (b == MBT_SELECT && a == MA_CLICK) {
3684 term->selstate = ABOUT_TO;
3685 term->seltype = default_seltype;
3686 term->selanchor = selpoint;
3687 term->selmode = SM_CHAR;
3688 } else if (b == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
3690 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
3691 term->selstate = DRAGGING;
3692 term->selstart = term->selanchor = selpoint;
3693 term->selend = term->selstart;
3694 incpos(term->selend);
3696 } else if ((b == MBT_SELECT && a == MA_DRAG) ||
3697 (b == MBT_EXTEND && a != MA_RELEASE)) {
3698 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
3700 if (b == MBT_EXTEND && a != MA_DRAG && term->selstate == SELECTED) {
3701 if (term->seltype == LEXICOGRAPHIC) {
3703 * For normal selection, we extend by moving
3704 * whichever end of the current selection is closer
3707 if (posdiff(selpoint, term->selstart) <
3708 posdiff(term->selend, term->selstart) / 2) {
3709 term->selanchor = term->selend;
3710 decpos(term->selanchor);
3712 term->selanchor = term->selstart;
3716 * For rectangular selection, we have a choice of
3717 * _four_ places to put selanchor and selpoint: the
3718 * four corners of the selection.
3720 if (2*selpoint.x < term->selstart.x + term->selend.x)
3721 term->selanchor.x = term->selend.x-1;
3723 term->selanchor.x = term->selstart.x;
3725 if (2*selpoint.y < term->selstart.y + term->selend.y)
3726 term->selanchor.y = term->selend.y;
3728 term->selanchor.y = term->selstart.y;
3730 term->selstate = DRAGGING;
3732 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
3733 term->selanchor = selpoint;
3734 term->selstate = DRAGGING;
3735 if (term->seltype == LEXICOGRAPHIC) {
3737 * For normal selection, we set (selstart,selend) to
3738 * (selpoint,selanchor) in some order.
3740 if (poslt(selpoint, term->selanchor)) {
3741 term->selstart = selpoint;
3742 term->selend = term->selanchor;
3743 incpos(term->selend);
3745 term->selstart = term->selanchor;
3746 term->selend = selpoint;
3747 incpos(term->selend);
3751 * For rectangular selection, we may need to
3752 * interchange x and y coordinates (if the user has
3753 * dragged in the -x and +y directions, or vice versa).
3755 term->selstart.x = min(term->selanchor.x, selpoint.x);
3756 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
3757 term->selstart.y = min(term->selanchor.y, selpoint.y);
3758 term->selend.y = max(term->selanchor.y, selpoint.y);
3761 } else if ((b == MBT_SELECT || b == MBT_EXTEND) && a == MA_RELEASE) {
3762 if (term->selstate == DRAGGING) {
3764 * We've completed a selection. We now transfer the
3765 * data to the clipboard.
3767 clipme(term, term->selstart, term->selend,
3768 (term->seltype == RECTANGULAR));
3769 term->selstate = SELECTED;
3771 term->selstate = NO_SELECTION;
3772 } else if (b == MBT_PASTE
3774 #if MULTICLICK_ONLY_EVENT
3775 || a == MA_2CLK || a == MA_3CLK
3778 request_paste(term->frontend);
3784 void term_nopaste(Terminal *term)
3786 if (term->paste_len == 0)
3788 sfree(term->paste_buffer);
3789 term->paste_buffer = NULL;
3790 term->paste_len = 0;
3793 int term_paste_pending(Terminal *term)
3795 return term->paste_len != 0;
3798 void term_paste(Terminal *term)
3800 long now, paste_diff;
3802 if (term->paste_len == 0)
3805 /* Don't wait forever to paste */
3806 if (term->paste_hold) {
3807 now = GETTICKCOUNT();
3808 paste_diff = now - term->last_paste;
3809 if (paste_diff >= 0 && paste_diff < 450)
3812 term->paste_hold = 0;
3814 while (term->paste_pos < term->paste_len) {
3816 while (n + term->paste_pos < term->paste_len) {
3817 if (term->paste_buffer[term->paste_pos + n++] == '\r')
3821 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
3822 term->paste_pos += n;
3824 if (term->paste_pos < term->paste_len) {
3825 term->paste_hold = 1;
3829 sfree(term->paste_buffer);
3830 term->paste_buffer = NULL;
3831 term->paste_len = 0;
3834 static void deselect(Terminal *term)
3836 term->selstate = NO_SELECTION;
3837 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
3840 void term_deselect(Terminal *term)
3846 int term_ldisc(Terminal *term, int option)
3848 if (option == LD_ECHO)
3849 return term->term_echoing;
3850 if (option == LD_EDIT)
3851 return term->term_editing;
3856 * from_backend(), to get data from the backend for the terminal.
3858 int from_backend(void *vterm, int is_stderr, char *data, int len)
3860 Terminal *term = (Terminal *)vterm;
3864 bufchain_add(&term->inbuf, data, len);
3867 * term_out() always completely empties inbuf. Therefore,
3868 * there's no reason at all to return anything other than zero
3869 * from this function, because there _can't_ be a question of
3870 * the remote side needing to wait until term_out() has cleared
3873 * This is a slightly suboptimal way to deal with SSH2 - in
3874 * principle, the window mechanism would allow us to continue
3875 * to accept data on forwarded ports and X connections even
3876 * while the terminal processing was going slowly - but we
3877 * can't do the 100% right thing without moving the terminal
3878 * processing into a separate thread, and that might hurt
3879 * portability. So we manage stdout buffering the old SSH1 way:
3880 * if the terminal processing goes slowly, the whole SSH
3881 * connection stops accepting data until it's ready.
3883 * In practice, I can't imagine this causing serious trouble.
3888 void term_provide_logctx(Terminal *term, void *logctx)
3890 term->logctx = logctx;