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 *);
71 #ifdef OPTIMISE_SCROLL
72 static void scroll_display(Terminal *, int, int, int);
73 #endif /* OPTIMISE_SCROLL */
76 * Resize a line to make it `cols' columns wide.
78 unsigned long *resizeline(unsigned long *line, int cols)
81 unsigned long lineattrs;
83 if (line[0] != (unsigned long)cols) {
85 * This line is the wrong length, which probably means it
86 * hasn't been accessed since a resize. Resize it now.
89 lineattrs = line[oldlen + 1];
90 line = srealloc(line, TSIZE * (2 + cols));
92 for (i = oldlen; i < cols; i++)
93 line[i + 1] = ERASE_CHAR;
94 line[cols + 1] = lineattrs & LATTR_MODE;
101 * Retrieve a line of the screen or of the scrollback, according to
102 * whether the y coordinate is non-negative or negative
105 unsigned long *lineptr(Terminal *term, int y, int lineno)
107 unsigned long *line, *newline;
112 whichtree = term->screen;
115 whichtree = term->scrollback;
116 treeindex = y + count234(term->scrollback);
118 line = index234(whichtree, treeindex);
120 /* We assume that we don't screw up and retrieve something out of range. */
121 assert(line != NULL);
123 newline = resizeline(line, term->cols);
124 if (newline != line) {
125 delpos234(whichtree, treeindex);
126 addpos234(whichtree, newline, treeindex);
133 #define lineptr(x) lineptr(term,x,__LINE__)
136 * Set up power-on settings for the terminal.
138 static void power_on(Terminal *term)
140 term->curs.x = term->curs.y = 0;
141 term->alt_x = term->alt_y = 0;
142 term->savecurs.x = term->savecurs.y = 0;
143 term->alt_t = term->marg_t = 0;
144 if (term->rows != -1)
145 term->alt_b = term->marg_b = term->rows - 1;
147 term->alt_b = term->marg_b = 0;
148 if (term->cols != -1) {
150 for (i = 0; i < term->cols; i++)
151 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
153 term->alt_om = term->dec_om = term->cfg->dec_om;
154 term->alt_ins = term->insert = FALSE;
155 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
156 term->alt_wrap = term->wrap = term->cfg->wrap_mode;
157 term->alt_cset = term->cset = term->save_cset = 0;
158 term->alt_utf = term->utf = term->save_utf = 0;
160 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
161 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = ATTR_ASCII;
163 term->in_vbell = FALSE;
165 term->big_cursor = 0;
166 term->save_attr = term->curr_attr = ATTR_DEFAULT;
167 term->term_editing = term->term_echoing = FALSE;
168 term->app_cursor_keys = term->cfg->app_cursor;
169 term->app_keypad_keys = term->cfg->app_keypad;
170 term->use_bce = term->cfg->bce;
171 term->blink_is_real = term->cfg->blinktext;
172 term->erase_char = ERASE_CHAR;
174 term_print_finish(term);
177 for (i = 0; i < 256; i++)
178 term->wordness[i] = term->cfg->wordness[i];
181 swap_screen(term, 1, FALSE, FALSE);
182 erase_lots(term, FALSE, TRUE, TRUE);
183 swap_screen(term, 0, FALSE, FALSE);
184 erase_lots(term, FALSE, TRUE, TRUE);
189 * Force a screen update.
191 void term_update(Terminal *term)
194 ctx = get_ctx(term->frontend);
196 int need_sbar_update = term->seen_disp_event;
197 if (term->seen_disp_event && term->cfg->scroll_on_disp) {
198 term->disptop = 0; /* return to main screen */
199 term->seen_disp_event = 0;
200 need_sbar_update = TRUE;
202 if (need_sbar_update)
204 do_paint(term, ctx, TRUE);
205 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
211 * Called from front end when a keypress occurs, to trigger
212 * anything magical that needs to happen in that situation.
214 void term_seen_key_event(Terminal *term)
217 * On any keypress, clear the bell overload mechanism
218 * completely, on the grounds that large numbers of
219 * beeps coming from deliberate key action are likely
220 * to be intended (e.g. beeps from filename completion
221 * blocking repeatedly).
223 term->beep_overloaded = FALSE;
224 while (term->beephead) {
225 struct beeptime *tmp = term->beephead;
226 term->beephead = tmp->next;
229 term->beeptail = NULL;
233 * Reset the scrollback on keypress, if we're doing that.
235 if (term->cfg->scroll_on_key) {
236 term->disptop = 0; /* return to main screen */
237 term->seen_disp_event = 1;
242 * Same as power_on(), but an external function.
244 void term_pwron(Terminal *term)
247 if (term->ldisc) /* cause ldisc to notice changes */
248 ldisc_send(term->ldisc, NULL, 0, 0);
256 * When the user reconfigures us, we need to check the forbidden-
257 * alternate-screen config option, disable raw mouse mode if the
258 * user has disabled mouse reporting, and abandon a print job if
259 * the user has disabled printing.
261 void term_reconfig(Terminal *term)
263 if (term->cfg->no_alt_screen)
264 swap_screen(term, 0, FALSE, FALSE);
265 if (term->cfg->no_mouse_rep) {
266 term->xterm_mouse = 0;
267 set_raw_mouse_mode(term->frontend, 0);
269 if (term->cfg->no_remote_charset) {
270 term->cset_attr[0] = term->cset_attr[1] = ATTR_ASCII;
271 term->sco_acs = term->alt_sco_acs = 0;
274 if (!*term->cfg->printer) {
275 term_print_finish(term);
280 * Clear the scrollback.
282 void term_clrsb(Terminal *term)
286 while ((line = delpos234(term->scrollback, 0)) != NULL) {
293 * Initialise the terminal.
295 Terminal *term_init(Config *mycfg, void *frontend)
300 * Allocate a new Terminal structure and initialise the fields
303 term = smalloc(sizeof(Terminal));
304 term->frontend = frontend;
307 term->compatibility_level = TM_PUTTY;
308 strcpy(term->id_string, "\033[?6c");
309 term->last_blink = term->last_tblink = 0;
310 term->paste_buffer = NULL;
311 term->last_paste = 0;
312 bufchain_init(&term->inbuf);
313 bufchain_init(&term->printer_buf);
314 term->printing = term->only_printing = FALSE;
315 term->print_job = NULL;
316 term->vt52_mode = FALSE;
317 term->cr_lf_return = FALSE;
318 term->seen_disp_event = FALSE;
319 term->xterm_mouse = term->mouse_is_down = FALSE;
320 term->reset_132 = FALSE;
321 term->blinker = term->tblinker = 0;
323 term->repeat_off = FALSE;
324 term->termstate = TOPLEVEL;
325 term->selstate = NO_SELECTION;
328 term->screen = term->alt_screen = term->scrollback = NULL;
330 term->disptext = term->dispcurs = NULL;
333 term->rows = term->cols = -1;
335 term->beephead = term->beeptail = NULL;
337 term->lastbeep = FALSE;
338 term->beep_overloaded = FALSE;
339 term->attr_mask = 0xffffffff;
340 term->resize_fn = NULL;
341 term->resize_ctx = NULL;
347 * Set up the terminal for a given size.
349 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
352 unsigned long *newdisp, *line;
355 int save_alt_which = term->alt_which;
357 if (newrows == term->rows && newcols == term->cols &&
358 newsavelines == term->savelines)
359 return; /* nothing to do */
362 swap_screen(term, 0, FALSE, FALSE);
364 term->alt_t = term->marg_t = 0;
365 term->alt_b = term->marg_b = newrows - 1;
367 if (term->rows == -1) {
368 term->scrollback = newtree234(NULL);
369 term->screen = newtree234(NULL);
374 * Resize the screen and scrollback. We only need to shift
375 * lines around within our data structures, because lineptr()
376 * will take care of resizing each individual line if
379 * - If the new screen and the old screen differ in length, we
380 * must shunt some lines in from the scrollback or out to
383 * - If doing that fails to provide us with enough material to
384 * fill the new screen (i.e. the number of rows needed in
385 * the new screen exceeds the total number in the previous
386 * screen+scrollback), we must invent some blank lines to
389 * - Then, if the new scrollback length is less than the
390 * amount of scrollback we actually have, we must throw some
393 sblen = count234(term->scrollback);
394 /* Do this loop to expand the screen if newrows > rows */
395 for (i = term->rows; i < newrows; i++) {
397 line = delpos234(term->scrollback, --sblen);
399 line = smalloc(TSIZE * (newcols + 2));
401 for (j = 0; j <= newcols; j++)
402 line[j + 1] = ERASE_CHAR;
404 addpos234(term->screen, line, 0);
406 /* Do this loop to shrink the screen if newrows < rows */
407 for (i = newrows; i < term->rows; i++) {
408 line = delpos234(term->screen, 0);
409 addpos234(term->scrollback, line, sblen++);
411 assert(count234(term->screen) == newrows);
412 while (sblen > newsavelines) {
413 line = delpos234(term->scrollback, 0);
417 assert(count234(term->scrollback) <= newsavelines);
420 newdisp = smalloc(newrows * (newcols + 1) * TSIZE);
421 for (i = 0; i < newrows * (newcols + 1); i++)
422 newdisp[i] = ATTR_INVALID;
423 sfree(term->disptext);
424 term->disptext = newdisp;
425 term->dispcurs = NULL;
427 newalt = newtree234(NULL);
428 for (i = 0; i < newrows; i++) {
429 line = smalloc(TSIZE * (newcols + 2));
431 for (j = 0; j <= newcols; j++)
432 line[j + 1] = term->erase_char;
433 addpos234(newalt, line, i);
435 if (term->alt_screen) {
436 while (NULL != (line = delpos234(term->alt_screen, 0)))
438 freetree234(term->alt_screen);
440 term->alt_screen = newalt;
442 term->tabs = srealloc(term->tabs, newcols * sizeof(*term->tabs));
445 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
446 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
450 term->curs.y += newrows - term->rows;
451 if (term->curs.y < 0)
453 if (term->curs.y >= newrows)
454 term->curs.y = newrows - 1;
455 if (term->curs.x >= newcols)
456 term->curs.x = newcols - 1;
457 term->alt_x = term->alt_y = 0;
458 term->wrapnext = term->alt_wnext = FALSE;
460 term->rows = newrows;
461 term->cols = newcols;
462 term->savelines = newsavelines;
465 swap_screen(term, save_alt_which, FALSE, FALSE);
470 term->resize_fn(term->resize_ctx, term->cols, term->rows);
474 * Hand a function and context pointer to the terminal which it can
475 * use to notify a back end of resizes.
477 void term_provide_resize_fn(Terminal *term,
478 void (*resize_fn)(void *, int, int),
481 term->resize_fn = resize_fn;
482 term->resize_ctx = resize_ctx;
483 if (term->cols > 0 && term->rows > 0)
484 resize_fn(resize_ctx, term->cols, term->rows);
488 * Swap screens. If `reset' is TRUE and we have been asked to
489 * switch to the alternate screen, we must bring most of its
490 * configuration from the main screen and erase the contents of the
491 * alternate screen completely. (This is even true if we're already
492 * on it! Blame xterm.)
494 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
500 reset = FALSE; /* do no weird resetting if which==0 */
502 if (which != term->alt_which) {
503 term->alt_which = which;
505 ttr = term->alt_screen;
506 term->alt_screen = term->screen;
509 if (!reset && !keep_cur_pos)
510 term->curs.x = term->alt_x;
513 if (!reset && !keep_cur_pos)
514 term->curs.y = term->alt_y;
517 if (!reset) term->marg_t = term->alt_t;
520 if (!reset) term->marg_b = term->alt_b;
523 if (!reset) term->dec_om = term->alt_om;
526 if (!reset) term->wrap = term->alt_wrap;
529 if (!reset) term->wrapnext = term->alt_wnext;
532 if (!reset) term->insert = term->alt_ins;
535 if (!reset) term->cset = term->alt_cset;
538 if (!reset) term->utf = term->alt_utf;
541 if (!reset) term->sco_acs = term->alt_sco_acs;
542 term->alt_sco_acs = t;
545 if (reset && term->screen) {
547 * Yes, this _is_ supposed to honour background-colour-erase.
549 erase_lots(term, FALSE, TRUE, TRUE);
553 * This might not be possible if we're called during
561 * Update the scroll bar.
563 static void update_sbar(Terminal *term)
567 nscroll = count234(term->scrollback);
569 set_sbar(term->frontend, nscroll + term->rows,
570 nscroll + term->disptop, term->rows);
574 * Check whether the region bounded by the two pointers intersects
575 * the scroll region, and de-select the on-screen selection if so.
577 static void check_selection(Terminal *term, pos from, pos to)
579 if (poslt(from, term->selend) && poslt(term->selstart, to))
584 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
585 * for backward.) `sb' is TRUE if the scrolling is permitted to
586 * affect the scrollback buffer.
588 * NB this function invalidates all pointers into lines of the
589 * screen data structures. In particular, you MUST call fix_cpos
590 * after calling scroll() and before doing anything else that
591 * uses the cpos shortcut pointer.
593 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
595 unsigned long *line, *line2;
596 int i, seltop, olddisptop, shift;
598 if (topline != 0 || term->alt_which != 0)
601 olddisptop = term->disptop;
605 line = delpos234(term->screen, botline);
606 line = resizeline(line, term->cols);
607 for (i = 0; i < term->cols; i++)
608 line[i + 1] = term->erase_char;
609 line[term->cols + 1] = 0;
610 addpos234(term->screen, line, topline);
612 if (term->selstart.y >= topline && term->selstart.y <= botline) {
614 if (term->selstart.y > botline) {
615 term->selstart.y = botline;
616 term->selstart.x = 0;
619 if (term->selend.y >= topline && term->selend.y <= botline) {
621 if (term->selend.y > botline) {
622 term->selend.y = botline;
631 line = delpos234(term->screen, topline);
632 if (sb && term->savelines > 0) {
633 int sblen = count234(term->scrollback);
635 * We must add this line to the scrollback. We'll
636 * remove a line from the top of the scrollback to
637 * replace it, or allocate a new one if the
638 * scrollback isn't full.
640 if (sblen == term->savelines) {
641 sblen--, line2 = delpos234(term->scrollback, 0);
643 line2 = smalloc(TSIZE * (term->cols + 2));
644 line2[0] = term->cols;
646 addpos234(term->scrollback, line, sblen);
650 * If the user is currently looking at part of the
651 * scrollback, and they haven't enabled any options
652 * that are going to reset the scrollback as a
653 * result of this movement, then the chances are
654 * they'd like to keep looking at the same line. So
655 * we move their viewpoint at the same rate as the
656 * scroll, at least until their viewpoint hits the
657 * top end of the scrollback buffer, at which point
658 * we don't have the choice any more.
660 * Thanks to Jan Holmen Holsten for the idea and
661 * initial implementation.
663 if (term->disptop > -term->savelines && term->disptop < 0)
666 line = resizeline(line, term->cols);
667 for (i = 0; i < term->cols; i++)
668 line[i + 1] = term->erase_char;
669 line[term->cols + 1] = 0;
670 addpos234(term->screen, line, botline);
673 * If the selection endpoints move into the scrollback,
674 * we keep them moving until they hit the top. However,
675 * of course, if the line _hasn't_ moved into the
676 * scrollback then we don't do this, and cut them off
677 * at the top of the scroll region.
679 * This applies to selstart and selend (for an existing
680 * selection), and also selanchor (for one being
681 * selected as we speak).
683 seltop = sb ? -term->savelines : topline;
685 if (term->selstart.y >= seltop &&
686 term->selstart.y <= botline) {
688 if (term->selstart.y < seltop) {
689 term->selstart.y = seltop;
690 term->selstart.x = 0;
693 if (term->selend.y >= seltop && term->selend.y <= botline) {
695 if (term->selend.y < seltop) {
696 term->selend.y = seltop;
700 if (term->selanchor.y >= seltop && term->selanchor.y <= botline) {
702 if (term->selanchor.y < seltop) {
703 term->selanchor.y = seltop;
704 term->selanchor.x = 0;
711 #ifdef OPTIMISE_SCROLL
712 shift += term->disptop - olddisptop;
713 if (shift < term->rows && shift > -term->rows && shift != 0)
714 scroll_display(term, topline, botline, shift);
715 #endif /* OPTIMISE_SCROLL */
718 #ifdef OPTIMISE_SCROLL
720 * Scroll the physical display, and our conception of it in disptext.
722 static void scroll_display(Terminal *term, int topline, int botline, int lines)
724 unsigned long *start, *end;
725 int distance, size, i;
727 start = term->disptext + topline * (term->cols + 1);
728 end = term->disptext + (botline + 1) * (term->cols + 1);
729 distance = (lines > 0 ? lines : -lines) * (term->cols + 1);
730 size = end - start - distance;
732 memmove(start, start + distance, size * TSIZE);
733 if (term->dispcurs >= start + distance &&
734 term->dispcurs <= start + distance + size)
735 term->dispcurs -= distance;
736 for (i = 0; i < distance; i++)
737 (start + size)[i] |= ATTR_INVALID;
739 memmove(start + distance, start, size * TSIZE);
740 if (term->dispcurs >= start && term->dispcurs <= start + size)
741 term->dispcurs += distance;
742 for (i = 0; i < distance; i++)
743 start[i] |= ATTR_INVALID;
745 do_scroll(term->frontend, topline, botline, lines);
747 #endif /* OPTIMISE_SCROLL */
750 * Move the cursor to a given position, clipping at boundaries. We
751 * may or may not want to clip at the scroll margin: marg_clip is 0
752 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
753 * even _being_ outside the margins.
755 static void move(Terminal *term, int x, int y, int marg_clip)
762 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
765 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
776 term->wrapnext = FALSE;
780 * Save or restore the cursor and SGR mode.
782 static void save_cursor(Terminal *term, int save)
785 term->savecurs = term->curs;
786 term->save_attr = term->curr_attr;
787 term->save_cset = term->cset;
788 term->save_utf = term->utf;
789 term->save_wnext = term->wrapnext;
790 term->save_csattr = term->cset_attr[term->cset];
791 term->save_sco_acs = term->sco_acs;
793 term->curs = term->savecurs;
794 /* Make sure the window hasn't shrunk since the save */
795 if (term->curs.x >= term->cols)
796 term->curs.x = term->cols - 1;
797 if (term->curs.y >= term->rows)
798 term->curs.y = term->rows - 1;
800 term->curr_attr = term->save_attr;
801 term->cset = term->save_cset;
802 term->utf = term->save_utf;
803 term->wrapnext = term->save_wnext;
805 * wrapnext might reset to False if the x position is no
806 * longer at the rightmost edge.
808 if (term->wrapnext && term->curs.x < term->cols-1)
809 term->wrapnext = FALSE;
810 term->cset_attr[term->cset] = term->save_csattr;
811 term->sco_acs = term->save_sco_acs;
814 term->erase_char = (' ' | ATTR_ASCII |
816 (ATTR_FGMASK | ATTR_BGMASK)));
821 * Erase a large portion of the screen: the whole screen, or the
822 * whole line, or parts thereof.
824 static void erase_lots(Terminal *term,
825 int line_only, int from_begin, int to_end)
829 unsigned long *ldata;
832 start.y = term->curs.y;
834 end.y = term->curs.y + 1;
851 check_selection(term, start, end);
853 /* Clear screen also forces a full window redraw, just in case. */
854 if (start.y == 0 && start.x == 0 && end.y == term->rows)
855 term_invalidate(term);
857 ldata = lineptr(start.y);
858 while (poslt(start, end)) {
859 if (start.x == term->cols && !erase_lattr)
860 ldata[start.x] &= ~LATTR_WRAPPED;
862 ldata[start.x] = term->erase_char;
863 if (incpos(start) && start.y < term->rows)
864 ldata = lineptr(start.y);
869 * Insert or delete characters within the current line. n is +ve if
870 * insertion is desired, and -ve for deletion.
872 static void insch(Terminal *term, int n)
874 int dir = (n < 0 ? -1 : +1);
877 unsigned long *ldata;
879 n = (n < 0 ? -n : n);
880 if (n > term->cols - term->curs.x)
881 n = term->cols - term->curs.x;
882 m = term->cols - term->curs.x - n;
883 cursplus.y = term->curs.y;
884 cursplus.x = term->curs.x + n;
885 check_selection(term, term->curs, cursplus);
886 ldata = lineptr(term->curs.y);
888 memmove(ldata + term->curs.x, ldata + term->curs.x + n, m * TSIZE);
890 ldata[term->curs.x + m++] = term->erase_char;
892 memmove(ldata + term->curs.x + n, ldata + term->curs.x, m * TSIZE);
894 ldata[term->curs.x + n] = term->erase_char;
899 * Toggle terminal mode `mode' to state `state'. (`query' indicates
900 * whether the mode is a DEC private one or a normal one.)
902 static void toggle_mode(Terminal *term, int mode, int query, int state)
908 case 1: /* application cursor keys */
909 term->app_cursor_keys = state;
911 case 2: /* VT52 mode */
912 term->vt52_mode = !state;
913 if (term->vt52_mode) {
914 term->blink_is_real = FALSE;
915 term->vt52_bold = FALSE;
917 term->blink_is_real = term->cfg->blinktext;
920 case 3: /* 80/132 columns */
922 if (!term->cfg->no_remote_resize)
923 request_resize(term->frontend, state ? 132 : 80, term->rows);
924 term->reset_132 = state;
926 case 5: /* reverse video */
928 * Toggle reverse video. If we receive an OFF within the
929 * visual bell timeout period after an ON, we trigger an
930 * effective visual bell, so that ESC[?5hESC[?5l will
931 * always be an actually _visible_ visual bell.
933 ticks = GETTICKCOUNT();
934 /* turn off a previous vbell to avoid inconsistencies */
935 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
936 term->in_vbell = FALSE;
937 if (term->rvideo && !state && /* we're turning it off... */
938 (ticks - term->rvbell_startpoint) < VBELL_TIMEOUT) {/*...soon*/
939 /* If there's no vbell timeout already, or this one lasts
940 * longer, replace vbell_timeout with ours. */
941 if (!term->in_vbell ||
942 (term->rvbell_startpoint - term->vbell_startpoint <
944 term->vbell_startpoint = term->rvbell_startpoint;
945 term->in_vbell = TRUE; /* may clear rvideo but set in_vbell */
946 } else if (!term->rvideo && state) {
947 /* This is an ON, so we notice the time and save it. */
948 term->rvbell_startpoint = ticks;
950 term->rvideo = state;
951 term->seen_disp_event = TRUE;
955 case 6: /* DEC origin mode */
956 term->dec_om = state;
958 case 7: /* auto wrap */
961 case 8: /* auto key repeat */
962 term->repeat_off = !state;
964 case 10: /* set local edit mode */
965 term->term_editing = state;
966 if (term->ldisc) /* cause ldisc to notice changes */
967 ldisc_send(term->ldisc, NULL, 0, 0);
969 case 25: /* enable/disable cursor */
970 compatibility2(OTHER, VT220);
971 term->cursor_on = state;
972 term->seen_disp_event = TRUE;
974 case 47: /* alternate screen */
975 compatibility(OTHER);
977 swap_screen(term, term->cfg->no_alt_screen ? 0 : state, FALSE, FALSE);
980 case 1000: /* xterm mouse 1 */
981 term->xterm_mouse = state ? 1 : 0;
982 set_raw_mouse_mode(term->frontend, state);
984 case 1002: /* xterm mouse 2 */
985 term->xterm_mouse = state ? 2 : 0;
986 set_raw_mouse_mode(term->frontend, state);
988 case 1047: /* alternate screen */
989 compatibility(OTHER);
991 swap_screen(term, term->cfg->no_alt_screen ? 0 : state, TRUE, TRUE);
994 case 1048: /* save/restore cursor */
995 save_cursor(term, state);
996 if (!state) term->seen_disp_event = TRUE;
998 case 1049: /* cursor & alternate screen */
1000 save_cursor(term, state);
1001 if (!state) term->seen_disp_event = TRUE;
1002 compatibility(OTHER);
1004 swap_screen(term, term->cfg->no_alt_screen ? 0 : state, TRUE, FALSE);
1006 save_cursor(term, state);
1011 case 4: /* set insert mode */
1012 compatibility(VT102);
1013 term->insert = state;
1015 case 12: /* set echo mode */
1016 term->term_echoing = !state;
1017 if (term->ldisc) /* cause ldisc to notice changes */
1018 ldisc_send(term->ldisc, NULL, 0, 0);
1020 case 20: /* Return sends ... */
1021 term->cr_lf_return = state;
1023 case 34: /* Make cursor BIG */
1024 compatibility2(OTHER, VT220);
1025 term->big_cursor = !state;
1030 * Process an OSC sequence: set window title or icon name.
1032 static void do_osc(Terminal *term)
1035 while (term->osc_strlen--)
1036 term->wordness[(unsigned char)
1037 term->osc_string[term->osc_strlen]] = term->esc_args[0];
1039 term->osc_string[term->osc_strlen] = '\0';
1040 switch (term->esc_args[0]) {
1043 if (!term->cfg->no_remote_wintitle)
1044 set_icon(term->frontend, term->osc_string);
1045 if (term->esc_args[0] == 1)
1047 /* fall through: parameter 0 means set both */
1050 if (!term->cfg->no_remote_wintitle)
1051 set_title(term->frontend, term->osc_string);
1058 * ANSI printing routines.
1060 static void term_print_setup(Terminal *term)
1062 bufchain_clear(&term->printer_buf);
1063 term->print_job = printer_start_job(term->cfg->printer);
1065 static void term_print_flush(Terminal *term)
1070 while ((size = bufchain_size(&term->printer_buf)) > 5) {
1071 bufchain_prefix(&term->printer_buf, &data, &len);
1074 printer_job_data(term->print_job, data, len);
1075 bufchain_consume(&term->printer_buf, len);
1078 static void term_print_finish(Terminal *term)
1084 if (!term->printing && !term->only_printing)
1085 return; /* we need do nothing */
1087 term_print_flush(term);
1088 while ((size = bufchain_size(&term->printer_buf)) > 0) {
1089 bufchain_prefix(&term->printer_buf, &data, &len);
1091 if (c == '\033' || c == '\233') {
1092 bufchain_consume(&term->printer_buf, size);
1095 printer_job_data(term->print_job, &c, 1);
1096 bufchain_consume(&term->printer_buf, 1);
1099 printer_finish_job(term->print_job);
1100 term->print_job = NULL;
1101 term->printing = term->only_printing = FALSE;
1105 * Remove everything currently in `inbuf' and stick it up on the
1106 * in-memory display. There's a big state machine in here to
1107 * process escape sequences...
1109 void term_out(Terminal *term)
1112 unsigned char localbuf[256], *chars;
1117 chars = NULL; /* placate compiler warnings */
1118 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
1122 bufchain_prefix(&term->inbuf, &ret, &nchars);
1123 if (nchars > sizeof(localbuf))
1124 nchars = sizeof(localbuf);
1125 memcpy(localbuf, ret, nchars);
1126 bufchain_consume(&term->inbuf, nchars);
1128 assert(chars != NULL);
1134 * Optionally log the session traffic to a file. Useful for
1135 * debugging and possibly also useful for actual logging.
1137 if (term->cfg->logtype == LGTYP_DEBUG && term->logctx)
1138 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
1144 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1145 * be able to display 8-bit characters, but I'll let that go 'cause
1150 * If we're printing, add the character to the printer
1153 if (term->printing) {
1154 bufchain_add(&term->printer_buf, &c, 1);
1157 * If we're in print-only mode, we use a much simpler
1158 * state machine designed only to recognise the ESC[4i
1159 * termination sequence.
1161 if (term->only_printing) {
1163 term->print_state = 1;
1164 else if (c == (unsigned char)'\233')
1165 term->print_state = 2;
1166 else if (c == '[' && term->print_state == 1)
1167 term->print_state = 2;
1168 else if (c == '4' && term->print_state == 2)
1169 term->print_state = 3;
1170 else if (c == 'i' && term->print_state == 3)
1171 term->print_state = 4;
1173 term->print_state = 0;
1174 if (term->print_state == 4) {
1175 term_print_finish(term);
1181 /* First see about all those translations. */
1182 if (term->termstate == TOPLEVEL) {
1184 switch (term->utf_state) {
1187 /* UTF-8 must be stateless so we ignore iso2022. */
1188 if (unitab_ctrl[c] != 0xFF)
1190 else c = ((unsigned char)c) | ATTR_ASCII;
1192 } else if ((c & 0xe0) == 0xc0) {
1193 term->utf_size = term->utf_state = 1;
1194 term->utf_char = (c & 0x1f);
1195 } else if ((c & 0xf0) == 0xe0) {
1196 term->utf_size = term->utf_state = 2;
1197 term->utf_char = (c & 0x0f);
1198 } else if ((c & 0xf8) == 0xf0) {
1199 term->utf_size = term->utf_state = 3;
1200 term->utf_char = (c & 0x07);
1201 } else if ((c & 0xfc) == 0xf8) {
1202 term->utf_size = term->utf_state = 4;
1203 term->utf_char = (c & 0x03);
1204 } else if ((c & 0xfe) == 0xfc) {
1205 term->utf_size = term->utf_state = 5;
1206 term->utf_char = (c & 0x01);
1217 if ((c & 0xC0) != 0x80) {
1220 term->utf_state = 0;
1223 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
1224 if (--term->utf_state)
1229 /* Is somebody trying to be evil! */
1231 (c < 0x800 && term->utf_size >= 2) ||
1232 (c < 0x10000 && term->utf_size >= 3) ||
1233 (c < 0x200000 && term->utf_size >= 4) ||
1234 (c < 0x4000000 && term->utf_size >= 5))
1237 /* Unicode line separator and paragraph separator are CR-LF */
1238 if (c == 0x2028 || c == 0x2029)
1241 /* High controls are probably a Baaad idea too. */
1245 /* The UTF-16 surrogates are not nice either. */
1246 /* The standard give the option of decoding these:
1247 * I don't want to! */
1248 if (c >= 0xD800 && c < 0xE000)
1251 /* ISO 10646 characters now limited to UTF-16 range. */
1255 /* This is currently a TagPhobic application.. */
1256 if (c >= 0xE0000 && c <= 0xE007F)
1259 /* U+FEFF is best seen as a null. */
1262 /* But U+FFFE is an error. */
1263 if (c == 0xFFFE || c == 0xFFFF)
1266 /* Oops this is a 16bit implementation */
1271 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
1272 else if(term->sco_acs &&
1273 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
1275 if (term->sco_acs == 2) c ^= 0x80;
1278 switch (term->cset_attr[term->cset]) {
1280 * Linedraw characters are different from 'ESC ( B'
1281 * only for a small range. For ones outside that
1282 * range, make sure we use the same font as well as
1283 * the same encoding.
1286 if (unitab_ctrl[c] != 0xFF)
1289 c = ((unsigned char) c) | ATTR_LINEDRW;
1293 /* If UK-ASCII, make the '#' a LineDraw Pound */
1295 c = '}' | ATTR_LINEDRW;
1298 /*FALLTHROUGH*/ case ATTR_ASCII:
1299 if (unitab_ctrl[c] != 0xFF)
1302 c = ((unsigned char) c) | ATTR_ASCII;
1305 if (c>=' ') c = ((unsigned char)c) | ATTR_SCOACS;
1311 /* How about C1 controls ? */
1312 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
1313 !term->vt52_mode && has_compat(VT220)) {
1314 term->termstate = SEEN_ESC;
1315 term->esc_query = FALSE;
1316 c = '@' + (c & 0x1F);
1319 /* Or the GL control. */
1320 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
1321 if (term->curs.x && !term->wrapnext)
1323 term->wrapnext = FALSE;
1325 if (!term->cfg->no_dbackspace) /* destructive bksp might be disabled */
1326 *term->cpos = (' ' | term->curr_attr | ATTR_ASCII);
1328 /* Or normal C0 controls. */
1329 if ((c & -32) == 0 && term->termstate < DO_CTRLS) {
1331 case '\005': /* terminal type query */
1332 /* Strictly speaking this is VT100 but a VT100 defaults to
1333 * no response. Other terminals respond at their option.
1335 * Don't put a CR in the default string as this tends to
1336 * upset some weird software.
1338 * An xterm returns "xterm" (5 characters)
1340 compatibility(ANSIMIN);
1342 char abuf[256], *s, *d;
1344 for (s = term->cfg->answerback, d = abuf; *s; s++) {
1346 if (*s >= 'a' && *s <= 'z')
1347 *d++ = (*s - ('a' - 1));
1348 else if ((*s >= '@' && *s <= '_') ||
1349 *s == '?' || (*s & 0x80))
1354 } else if (*s == '^') {
1359 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
1365 struct beeptime *newbeep;
1366 unsigned long ticks;
1368 ticks = GETTICKCOUNT();
1370 if (!term->beep_overloaded) {
1371 newbeep = smalloc(sizeof(struct beeptime));
1372 newbeep->ticks = ticks;
1373 newbeep->next = NULL;
1374 if (!term->beephead)
1375 term->beephead = newbeep;
1377 term->beeptail->next = newbeep;
1378 term->beeptail = newbeep;
1383 * Throw out any beeps that happened more than
1386 while (term->beephead &&
1387 term->beephead->ticks < ticks - term->cfg->bellovl_t) {
1388 struct beeptime *tmp = term->beephead;
1389 term->beephead = tmp->next;
1391 if (!term->beephead)
1392 term->beeptail = NULL;
1396 if (term->cfg->bellovl && term->beep_overloaded &&
1397 ticks - term->lastbeep >= (unsigned)term->cfg->bellovl_s) {
1399 * If we're currently overloaded and the
1400 * last beep was more than s seconds ago,
1401 * leave overload mode.
1403 term->beep_overloaded = FALSE;
1404 } else if (term->cfg->bellovl && !term->beep_overloaded &&
1405 term->nbeeps >= term->cfg->bellovl_n) {
1407 * Now, if we have n or more beeps
1408 * remaining in the queue, go into overload
1411 term->beep_overloaded = TRUE;
1413 term->lastbeep = ticks;
1416 * Perform an actual beep if we're not overloaded.
1418 if (!term->cfg->bellovl || !term->beep_overloaded) {
1419 beep(term->frontend, term->cfg->beep);
1420 if (term->cfg->beep == BELL_VISUAL) {
1421 term->in_vbell = TRUE;
1422 term->vbell_startpoint = ticks;
1430 if (term->curs.x == 0 &&
1431 (term->curs.y == 0 || term->wrap == 0))
1433 else if (term->curs.x == 0 && term->curs.y > 0)
1434 term->curs.x = term->cols - 1, term->curs.y--;
1435 else if (term->wrapnext)
1436 term->wrapnext = FALSE;
1440 term->seen_disp_event = TRUE;
1443 compatibility(VT100);
1447 compatibility(VT100);
1451 if (term->vt52_mode)
1452 term->termstate = VT52_ESC;
1454 compatibility(ANSIMIN);
1455 term->termstate = SEEN_ESC;
1456 term->esc_query = FALSE;
1461 term->wrapnext = FALSE;
1463 term->seen_disp_event = TRUE;
1464 term->paste_hold = 0;
1466 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1469 if (has_compat(SCOANSI)) {
1470 move(term, 0, 0, 0);
1471 erase_lots(term, FALSE, FALSE, TRUE);
1473 term->wrapnext = FALSE;
1474 term->seen_disp_event = 1;
1478 compatibility(VT100);
1480 if (term->curs.y == term->marg_b)
1481 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1482 else if (term->curs.y < term->rows - 1)
1484 if (term->cfg->lfhascr)
1487 term->wrapnext = FALSE;
1488 term->seen_disp_event = 1;
1489 term->paste_hold = 0;
1491 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1495 pos old_curs = term->curs;
1496 unsigned long *ldata = lineptr(term->curs.y);
1500 } while (term->curs.x < term->cols - 1 &&
1501 !term->tabs[term->curs.x]);
1503 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM) {
1504 if (term->curs.x >= term->cols / 2)
1505 term->curs.x = term->cols / 2 - 1;
1507 if (term->curs.x >= term->cols)
1508 term->curs.x = term->cols - 1;
1512 check_selection(term, old_curs, term->curs);
1514 term->seen_disp_event = TRUE;
1518 switch (term->termstate) {
1520 /* Only graphic characters get this far;
1521 * ctrls are stripped above */
1522 if (term->wrapnext && term->wrap) {
1523 term->cpos[1] |= LATTR_WRAPPED;
1524 if (term->curs.y == term->marg_b)
1525 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1526 else if (term->curs.y < term->rows - 1)
1530 term->wrapnext = FALSE;
1534 if (term->selstate != NO_SELECTION) {
1535 pos cursplus = term->curs;
1537 check_selection(term, term->curs, cursplus);
1539 if (((c & CSET_MASK) == ATTR_ASCII || (c & CSET_MASK) == 0) &&
1541 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1543 extern int wcwidth(wchar_t ucs);
1548 width = wcwidth((wchar_t) c);
1551 *term->cpos++ = c | term->curr_attr;
1552 if (++term->curs.x == term->cols) {
1553 *term->cpos |= LATTR_WRAPPED;
1554 if (term->curs.y == term->marg_b)
1555 scroll(term, term->marg_t, term->marg_b,
1557 else if (term->curs.y < term->rows - 1)
1562 *term->cpos++ = UCSWIDE | term->curr_attr;
1565 *term->cpos++ = c | term->curr_attr;
1572 if (term->curs.x == term->cols) {
1575 term->wrapnext = TRUE;
1576 if (term->wrap && term->vt52_mode) {
1577 term->cpos[1] |= LATTR_WRAPPED;
1578 if (term->curs.y == term->marg_b)
1579 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1580 else if (term->curs.y < term->rows - 1)
1584 term->wrapnext = FALSE;
1587 term->seen_disp_event = 1;
1592 * This state is virtually identical to SEEN_ESC, with the
1593 * exception that we have an OSC sequence in the pipeline,
1594 * and _if_ we see a backslash, we process it.
1598 term->termstate = TOPLEVEL;
1601 /* else fall through */
1603 if (c >= ' ' && c <= '/') {
1604 if (term->esc_query)
1605 term->esc_query = -1;
1607 term->esc_query = c;
1610 term->termstate = TOPLEVEL;
1611 switch (ANSI(c, term->esc_query)) {
1612 case '[': /* enter CSI mode */
1613 term->termstate = SEEN_CSI;
1614 term->esc_nargs = 1;
1615 term->esc_args[0] = ARG_DEFAULT;
1616 term->esc_query = FALSE;
1618 case ']': /* xterm escape sequences */
1619 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1620 compatibility(OTHER);
1621 term->termstate = SEEN_OSC;
1622 term->esc_args[0] = 0;
1624 case '7': /* save cursor */
1625 compatibility(VT100);
1626 save_cursor(term, TRUE);
1628 case '8': /* restore cursor */
1629 compatibility(VT100);
1630 save_cursor(term, FALSE);
1631 term->seen_disp_event = TRUE;
1634 compatibility(VT100);
1635 term->app_keypad_keys = TRUE;
1638 compatibility(VT100);
1639 term->app_keypad_keys = FALSE;
1641 case 'D': /* exactly equivalent to LF */
1642 compatibility(VT100);
1643 if (term->curs.y == term->marg_b)
1644 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1645 else if (term->curs.y < term->rows - 1)
1648 term->wrapnext = FALSE;
1649 term->seen_disp_event = TRUE;
1651 case 'E': /* exactly equivalent to CR-LF */
1652 compatibility(VT100);
1654 if (term->curs.y == term->marg_b)
1655 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1656 else if (term->curs.y < term->rows - 1)
1659 term->wrapnext = FALSE;
1660 term->seen_disp_event = TRUE;
1662 case 'M': /* reverse index - backwards LF */
1663 compatibility(VT100);
1664 if (term->curs.y == term->marg_t)
1665 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
1666 else if (term->curs.y > 0)
1669 term->wrapnext = FALSE;
1670 term->seen_disp_event = TRUE;
1672 case 'Z': /* terminal type query */
1673 compatibility(VT100);
1675 ldisc_send(term->ldisc, term->id_string,
1676 strlen(term->id_string), 0);
1678 case 'c': /* restore power-on settings */
1679 compatibility(VT100);
1681 if (term->ldisc) /* cause ldisc to notice changes */
1682 ldisc_send(term->ldisc, NULL, 0, 0);
1683 if (term->reset_132) {
1684 if (!term->cfg->no_remote_resize)
1685 request_resize(term->frontend, 80, term->rows);
1686 term->reset_132 = 0;
1690 term->seen_disp_event = TRUE;
1692 case 'H': /* set a tab */
1693 compatibility(VT100);
1694 term->tabs[term->curs.x] = TRUE;
1697 case ANSI('8', '#'): /* ESC # 8 fills screen with Es :-) */
1698 compatibility(VT100);
1700 unsigned long *ldata;
1704 for (i = 0; i < term->rows; i++) {
1706 for (j = 0; j < term->cols; j++)
1707 ldata[j] = ATTR_DEFAULT | 'E';
1708 ldata[term->cols] = 0;
1711 term->seen_disp_event = TRUE;
1712 scrtop.x = scrtop.y = 0;
1714 scrbot.y = term->rows;
1715 check_selection(term, scrtop, scrbot);
1719 case ANSI('3', '#'):
1720 case ANSI('4', '#'):
1721 case ANSI('5', '#'):
1722 case ANSI('6', '#'):
1723 compatibility(VT100);
1725 unsigned long nlattr;
1726 unsigned long *ldata;
1727 switch (ANSI(c, term->esc_query)) {
1728 case ANSI('3', '#'):
1731 case ANSI('4', '#'):
1734 case ANSI('5', '#'):
1735 nlattr = LATTR_NORM;
1737 default: /* spiritually case ANSI('6', '#'): */
1738 nlattr = LATTR_WIDE;
1741 ldata = lineptr(term->curs.y);
1742 ldata[term->cols] &= ~LATTR_MODE;
1743 ldata[term->cols] |= nlattr;
1747 case ANSI('A', '('):
1748 compatibility(VT100);
1749 if (!term->cfg->no_remote_charset)
1750 term->cset_attr[0] = ATTR_GBCHR;
1752 case ANSI('B', '('):
1753 compatibility(VT100);
1754 if (!term->cfg->no_remote_charset)
1755 term->cset_attr[0] = ATTR_ASCII;
1757 case ANSI('0', '('):
1758 compatibility(VT100);
1759 if (!term->cfg->no_remote_charset)
1760 term->cset_attr[0] = ATTR_LINEDRW;
1762 case ANSI('U', '('):
1763 compatibility(OTHER);
1764 if (!term->cfg->no_remote_charset)
1765 term->cset_attr[0] = ATTR_SCOACS;
1768 case ANSI('A', ')'):
1769 compatibility(VT100);
1770 if (!term->cfg->no_remote_charset)
1771 term->cset_attr[1] = ATTR_GBCHR;
1773 case ANSI('B', ')'):
1774 compatibility(VT100);
1775 if (!term->cfg->no_remote_charset)
1776 term->cset_attr[1] = ATTR_ASCII;
1778 case ANSI('0', ')'):
1779 compatibility(VT100);
1780 if (!term->cfg->no_remote_charset)
1781 term->cset_attr[1] = ATTR_LINEDRW;
1783 case ANSI('U', ')'):
1784 compatibility(OTHER);
1785 if (!term->cfg->no_remote_charset)
1786 term->cset_attr[1] = ATTR_SCOACS;
1789 case ANSI('8', '%'): /* Old Linux code */
1790 case ANSI('G', '%'):
1791 compatibility(OTHER);
1792 if (!term->cfg->no_remote_charset)
1795 case ANSI('@', '%'):
1796 compatibility(OTHER);
1797 if (!term->cfg->no_remote_charset)
1803 term->termstate = TOPLEVEL; /* default */
1805 if (term->esc_nargs <= ARGS_MAX) {
1806 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
1807 term->esc_args[term->esc_nargs - 1] = 0;
1808 term->esc_args[term->esc_nargs - 1] =
1809 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
1811 term->termstate = SEEN_CSI;
1812 } else if (c == ';') {
1813 if (++term->esc_nargs <= ARGS_MAX)
1814 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
1815 term->termstate = SEEN_CSI;
1816 } else if (c < '@') {
1817 if (term->esc_query)
1818 term->esc_query = -1;
1820 term->esc_query = TRUE;
1822 term->esc_query = c;
1823 term->termstate = SEEN_CSI;
1825 switch (ANSI(c, term->esc_query)) {
1826 case 'A': /* move up N lines */
1827 move(term, term->curs.x,
1828 term->curs.y - def(term->esc_args[0], 1), 1);
1829 term->seen_disp_event = TRUE;
1831 case 'e': /* move down N lines */
1832 compatibility(ANSI);
1835 move(term, term->curs.x,
1836 term->curs.y + def(term->esc_args[0], 1), 1);
1837 term->seen_disp_event = TRUE;
1839 case ANSI('c', '>'): /* report xterm version */
1840 compatibility(OTHER);
1841 /* this reports xterm version 136 so that VIM can
1842 use the drag messages from the mouse reporting */
1844 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
1846 case 'a': /* move right N cols */
1847 compatibility(ANSI);
1850 move(term, term->curs.x + def(term->esc_args[0], 1),
1852 term->seen_disp_event = TRUE;
1854 case 'D': /* move left N cols */
1855 move(term, term->curs.x - def(term->esc_args[0], 1),
1857 term->seen_disp_event = TRUE;
1859 case 'E': /* move down N lines and CR */
1860 compatibility(ANSI);
1862 term->curs.y + def(term->esc_args[0], 1), 1);
1863 term->seen_disp_event = TRUE;
1865 case 'F': /* move up N lines and CR */
1866 compatibility(ANSI);
1868 term->curs.y - def(term->esc_args[0], 1), 1);
1869 term->seen_disp_event = TRUE;
1872 case '`': /* set horizontal posn */
1873 compatibility(ANSI);
1874 move(term, def(term->esc_args[0], 1) - 1,
1876 term->seen_disp_event = TRUE;
1878 case 'd': /* set vertical posn */
1879 compatibility(ANSI);
1880 move(term, term->curs.x,
1881 ((term->dec_om ? term->marg_t : 0) +
1882 def(term->esc_args[0], 1) - 1),
1883 (term->dec_om ? 2 : 0));
1884 term->seen_disp_event = TRUE;
1887 case 'f': /* set horz and vert posns at once */
1888 if (term->esc_nargs < 2)
1889 term->esc_args[1] = ARG_DEFAULT;
1890 move(term, def(term->esc_args[1], 1) - 1,
1891 ((term->dec_om ? term->marg_t : 0) +
1892 def(term->esc_args[0], 1) - 1),
1893 (term->dec_om ? 2 : 0));
1894 term->seen_disp_event = TRUE;
1896 case 'J': /* erase screen or parts of it */
1898 unsigned int i = def(term->esc_args[0], 0) + 1;
1901 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
1904 term->seen_disp_event = TRUE;
1906 case 'K': /* erase line or parts of it */
1908 unsigned int i = def(term->esc_args[0], 0) + 1;
1911 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
1913 term->seen_disp_event = TRUE;
1915 case 'L': /* insert lines */
1916 compatibility(VT102);
1917 if (term->curs.y <= term->marg_b)
1918 scroll(term, term->curs.y, term->marg_b,
1919 -def(term->esc_args[0], 1), FALSE);
1921 term->seen_disp_event = TRUE;
1923 case 'M': /* delete lines */
1924 compatibility(VT102);
1925 if (term->curs.y <= term->marg_b)
1926 scroll(term, term->curs.y, term->marg_b,
1927 def(term->esc_args[0], 1),
1930 term->seen_disp_event = TRUE;
1932 case '@': /* insert chars */
1933 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
1934 compatibility(VT102);
1935 insch(term, def(term->esc_args[0], 1));
1936 term->seen_disp_event = TRUE;
1938 case 'P': /* delete chars */
1939 compatibility(VT102);
1940 insch(term, -def(term->esc_args[0], 1));
1941 term->seen_disp_event = TRUE;
1943 case 'c': /* terminal type query */
1944 compatibility(VT100);
1945 /* This is the response for a VT102 */
1947 ldisc_send(term->ldisc, term->id_string,
1948 strlen(term->id_string), 0);
1950 case 'n': /* cursor position query */
1952 if (term->esc_args[0] == 6) {
1954 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
1956 ldisc_send(term->ldisc, buf, strlen(buf), 0);
1957 } else if (term->esc_args[0] == 5) {
1958 ldisc_send(term->ldisc, "\033[0n", 4, 0);
1962 case 'h': /* toggle modes to high */
1964 compatibility(VT100);
1967 for (i = 0; i < term->esc_nargs; i++)
1968 toggle_mode(term, term->esc_args[i],
1969 term->esc_query, TRUE);
1974 compatibility(VT100);
1976 if (term->esc_nargs != 1) break;
1977 if (term->esc_args[0] == 5 && *term->cfg->printer) {
1978 term->printing = TRUE;
1979 term->only_printing = !term->esc_query;
1980 term->print_state = 0;
1981 term_print_setup(term);
1982 } else if (term->esc_args[0] == 4 &&
1984 term_print_finish(term);
1988 case 'l': /* toggle modes to low */
1990 compatibility(VT100);
1993 for (i = 0; i < term->esc_nargs; i++)
1994 toggle_mode(term, term->esc_args[i],
1995 term->esc_query, FALSE);
1998 case 'g': /* clear tabs */
1999 compatibility(VT100);
2000 if (term->esc_nargs == 1) {
2001 if (term->esc_args[0] == 0) {
2002 term->tabs[term->curs.x] = FALSE;
2003 } else if (term->esc_args[0] == 3) {
2005 for (i = 0; i < term->cols; i++)
2006 term->tabs[i] = FALSE;
2010 case 'r': /* set scroll margins */
2011 compatibility(VT100);
2012 if (term->esc_nargs <= 2) {
2014 top = def(term->esc_args[0], 1) - 1;
2015 bot = (term->esc_nargs <= 1
2016 || term->esc_args[1] == 0 ?
2018 def(term->esc_args[1], term->rows)) - 1;
2019 if (bot >= term->rows)
2020 bot = term->rows - 1;
2021 /* VTTEST Bug 9 - if region is less than 2 lines
2022 * don't change region.
2024 if (bot - top > 0) {
2029 * I used to think the cursor should be
2030 * placed at the top of the newly marginned
2031 * area. Apparently not: VMS TPU falls over
2034 * Well actually it should for
2037 term->curs.y = (term->dec_om ?
2040 term->seen_disp_event = TRUE;
2044 case 'm': /* set graphics rendition */
2047 * A VT100 without the AVO only had one
2048 * attribute, either underline or
2049 * reverse video depending on the
2050 * cursor type, this was selected by
2054 * This is sometimes DIM, eg on the
2057 * This is sometimes INVIS various ANSI.
2059 * This like 22 disables BOLD, DIM and INVIS
2061 * The ANSI colours appear on any
2062 * terminal that has colour (obviously)
2063 * but the interaction between sgr0 and
2064 * the colours varies but is usually
2065 * related to the background colour
2066 * erase item. The interaction between
2067 * colour attributes and the mono ones
2068 * is also very implementation
2071 * The 39 and 49 attributes are likely
2072 * to be unimplemented.
2075 for (i = 0; i < term->esc_nargs; i++) {
2076 switch (def(term->esc_args[i], 0)) {
2077 case 0: /* restore defaults */
2078 term->curr_attr = ATTR_DEFAULT;
2080 case 1: /* enable bold */
2081 compatibility(VT100AVO);
2082 term->curr_attr |= ATTR_BOLD;
2084 case 21: /* (enable double underline) */
2085 compatibility(OTHER);
2086 case 4: /* enable underline */
2087 compatibility(VT100AVO);
2088 term->curr_attr |= ATTR_UNDER;
2090 case 5: /* enable blink */
2091 compatibility(VT100AVO);
2092 term->curr_attr |= ATTR_BLINK;
2094 case 7: /* enable reverse video */
2095 term->curr_attr |= ATTR_REVERSE;
2097 case 10: /* SCO acs off */
2098 compatibility(SCOANSI);
2099 if (term->cfg->no_remote_charset) break;
2100 term->sco_acs = 0; break;
2101 case 11: /* SCO acs on */
2102 compatibility(SCOANSI);
2103 if (term->cfg->no_remote_charset) break;
2104 term->sco_acs = 1; break;
2105 case 12: /* SCO acs on flipped */
2106 compatibility(SCOANSI);
2107 if (term->cfg->no_remote_charset) break;
2108 term->sco_acs = 2; break;
2109 case 22: /* disable bold */
2110 compatibility2(OTHER, VT220);
2111 term->curr_attr &= ~ATTR_BOLD;
2113 case 24: /* disable underline */
2114 compatibility2(OTHER, VT220);
2115 term->curr_attr &= ~ATTR_UNDER;
2117 case 25: /* disable blink */
2118 compatibility2(OTHER, VT220);
2119 term->curr_attr &= ~ATTR_BLINK;
2121 case 27: /* disable reverse video */
2122 compatibility2(OTHER, VT220);
2123 term->curr_attr &= ~ATTR_REVERSE;
2134 term->curr_attr &= ~ATTR_FGMASK;
2136 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
2138 case 39: /* default-foreground */
2139 term->curr_attr &= ~ATTR_FGMASK;
2140 term->curr_attr |= ATTR_DEFFG;
2151 term->curr_attr &= ~ATTR_BGMASK;
2153 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
2155 case 49: /* default-background */
2156 term->curr_attr &= ~ATTR_BGMASK;
2157 term->curr_attr |= ATTR_DEFBG;
2162 term->erase_char = (' ' | ATTR_ASCII |
2168 case 's': /* save cursor */
2169 save_cursor(term, TRUE);
2171 case 'u': /* restore cursor */
2172 save_cursor(term, FALSE);
2173 term->seen_disp_event = TRUE;
2175 case 't': /* set page size - ie window height */
2177 * VT340/VT420 sequence DECSLPP, DEC only allows values
2178 * 24/25/36/48/72/144 other emulators (eg dtterm) use
2179 * illegal values (eg first arg 1..9) for window changing
2182 if (term->esc_nargs <= 1
2183 && (term->esc_args[0] < 1 ||
2184 term->esc_args[0] >= 24)) {
2185 compatibility(VT340TEXT);
2186 if (!term->cfg->no_remote_resize)
2187 request_resize(term->frontend, term->cols,
2188 def(term->esc_args[0], 24));
2190 } else if (term->esc_nargs >= 1 &&
2191 term->esc_args[0] >= 1 &&
2192 term->esc_args[0] < 24) {
2193 compatibility(OTHER);
2195 switch (term->esc_args[0]) {
2199 set_iconic(term->frontend, FALSE);
2202 set_iconic(term->frontend, TRUE);
2205 if (term->esc_nargs >= 3) {
2206 if (!term->cfg->no_remote_resize)
2207 move_window(term->frontend,
2208 def(term->esc_args[1], 0),
2209 def(term->esc_args[2], 0));
2213 /* We should resize the window to a given
2214 * size in pixels here, but currently our
2215 * resizing code isn't healthy enough to
2220 set_zorder(term->frontend, TRUE);
2223 /* move to bottom */
2224 set_zorder(term->frontend, FALSE);
2227 refresh_window(term->frontend);
2230 if (term->esc_nargs >= 3) {
2231 if (!term->cfg->no_remote_resize)
2232 request_resize(term->frontend,
2233 def(term->esc_args[2], term->cfg->width),
2234 def(term->esc_args[1], term->cfg->height));
2238 if (term->esc_nargs >= 2)
2239 set_zoomed(term->frontend,
2245 ldisc_send(term->ldisc,
2246 is_iconic(term->frontend) ?
2247 "\033[1t" : "\033[2t", 4, 0);
2251 get_window_pos(term->frontend, &x, &y);
2252 len = sprintf(buf, "\033[3;%d;%dt", x, y);
2253 ldisc_send(term->ldisc, buf, len, 0);
2258 get_window_pixels(term->frontend, &x, &y);
2259 len = sprintf(buf, "\033[4;%d;%dt", x, y);
2260 ldisc_send(term->ldisc, buf, len, 0);
2265 len = sprintf(buf, "\033[8;%d;%dt",
2266 term->rows, term->cols);
2267 ldisc_send(term->ldisc, buf, len, 0);
2272 * Hmmm. Strictly speaking we
2273 * should return `the size of the
2274 * screen in characters', but
2275 * that's not easy: (a) window
2276 * furniture being what it is it's
2277 * hard to compute, and (b) in
2278 * resize-font mode maximising the
2279 * window wouldn't change the
2280 * number of characters. *shrug*. I
2281 * think we'll ignore it for the
2282 * moment and see if anyone
2283 * complains, and then ask them
2284 * what they would like it to do.
2289 p = get_window_title(term->frontend, TRUE);
2291 ldisc_send(term->ldisc, "\033]L", 3, 0);
2292 ldisc_send(term->ldisc, p, len, 0);
2293 ldisc_send(term->ldisc, "\033\\", 2, 0);
2298 p = get_window_title(term->frontend,FALSE);
2300 ldisc_send(term->ldisc, "\033]l", 3, 0);
2301 ldisc_send(term->ldisc, p, len, 0);
2302 ldisc_send(term->ldisc, "\033\\", 2, 0);
2309 compatibility(SCOANSI);
2310 scroll(term, term->marg_t, term->marg_b,
2311 def(term->esc_args[0], 1), TRUE);
2313 term->wrapnext = FALSE;
2314 term->seen_disp_event = TRUE;
2317 compatibility(SCOANSI);
2318 scroll(term, term->marg_t, term->marg_b,
2319 -def(term->esc_args[0], 1), TRUE);
2321 term->wrapnext = FALSE;
2322 term->seen_disp_event = TRUE;
2324 case ANSI('|', '*'):
2325 /* VT420 sequence DECSNLS
2326 * Set number of lines on screen
2327 * VT420 uses VGA like hardware and can support any size in
2328 * reasonable range (24..49 AIUI) with no default specified.
2330 compatibility(VT420);
2331 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
2332 if (!term->cfg->no_remote_resize)
2333 request_resize(term->frontend, term->cols,
2334 def(term->esc_args[0],
2335 term->cfg->height));
2339 case ANSI('|', '$'):
2340 /* VT340/VT420 sequence DECSCPP
2341 * Set number of columns per page
2342 * Docs imply range is only 80 or 132, but I'll allow any.
2344 compatibility(VT340TEXT);
2345 if (term->esc_nargs <= 1) {
2346 if (!term->cfg->no_remote_resize)
2347 request_resize(term->frontend,
2348 def(term->esc_args[0],
2349 term->cfg->width), term->rows);
2353 case 'X': /* write N spaces w/o moving cursor */
2354 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
2355 compatibility(ANSIMIN);
2357 int n = def(term->esc_args[0], 1);
2359 unsigned long *p = term->cpos;
2360 if (n > term->cols - term->curs.x)
2361 n = term->cols - term->curs.x;
2362 cursplus = term->curs;
2364 check_selection(term, term->curs, cursplus);
2366 *p++ = term->erase_char;
2367 term->seen_disp_event = TRUE;
2370 case 'x': /* report terminal characteristics */
2371 compatibility(VT100);
2374 int i = def(term->esc_args[0], 0);
2375 if (i == 0 || i == 1) {
2376 strcpy(buf, "\033[2;1;1;112;112;1;0x");
2378 ldisc_send(term->ldisc, buf, 20, 0);
2382 case 'Z': /* BackTab for xterm */
2383 compatibility(OTHER);
2385 int i = def(term->esc_args[0], 1);
2386 pos old_curs = term->curs;
2388 for(;i>0 && term->curs.x>0; i--) {
2391 } while (term->curs.x >0 &&
2392 !term->tabs[term->curs.x]);
2395 check_selection(term, old_curs, term->curs);
2398 case ANSI('L', '='):
2399 compatibility(OTHER);
2400 term->use_bce = (term->esc_args[0] <= 0);
2401 term->erase_char = ERASE_CHAR;
2403 term->erase_char = (' ' | ATTR_ASCII |
2405 (ATTR_FGMASK | ATTR_BGMASK)));
2407 case ANSI('E', '='):
2408 compatibility(OTHER);
2409 term->blink_is_real = (term->esc_args[0] >= 1);
2411 case ANSI('p', '"'):
2413 * Allow the host to make this emulator a
2414 * 'perfect' VT102. This first appeared in
2415 * the VT220, but we do need to get back to
2416 * PuTTY mode so I won't check it.
2418 * The arg in 40..42,50 are a PuTTY extension.
2419 * The 2nd arg, 8bit vs 7bit is not checked.
2421 * Setting VT102 mode should also change
2422 * the Fkeys to generate PF* codes as a
2423 * real VT102 has no Fkeys. The VT220 does
2424 * this, F11..F13 become ESC,BS,LF other
2425 * Fkeys send nothing.
2427 * Note ESC c will NOT change this!
2430 switch (term->esc_args[0]) {
2432 term->compatibility_level &= ~TM_VTXXX;
2433 term->compatibility_level |= TM_VT102;
2436 term->compatibility_level &= ~TM_VTXXX;
2437 term->compatibility_level |= TM_VT220;
2441 if (term->esc_args[0] > 60 &&
2442 term->esc_args[0] < 70)
2443 term->compatibility_level |= TM_VTXXX;
2447 term->compatibility_level &= TM_VTXXX;
2450 term->compatibility_level = TM_PUTTY;
2453 term->compatibility_level = TM_SCOANSI;
2457 term->compatibility_level = TM_PUTTY;
2463 /* Change the response to CSI c */
2464 if (term->esc_args[0] == 50) {
2467 strcpy(term->id_string, "\033[?");
2468 for (i = 1; i < term->esc_nargs; i++) {
2470 strcat(term->id_string, ";");
2471 sprintf(lbuf, "%d", term->esc_args[i]);
2472 strcat(term->id_string, lbuf);
2474 strcat(term->id_string, "c");
2477 /* Is this a good idea ?
2478 * Well we should do a soft reset at this point ...
2480 if (!has_compat(VT420) && has_compat(VT100)) {
2481 if (!term->cfg->no_remote_resize) {
2482 if (term->reset_132)
2483 request_resize(132, 24);
2485 request_resize(80, 24);
2493 term->osc_w = FALSE;
2495 case 'P': /* Linux palette sequence */
2496 term->termstate = SEEN_OSC_P;
2497 term->osc_strlen = 0;
2499 case 'R': /* Linux palette reset */
2500 palette_reset(term->frontend);
2501 term_invalidate(term);
2502 term->termstate = TOPLEVEL;
2504 case 'W': /* word-set */
2505 term->termstate = SEEN_OSC_W;
2518 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
2522 * Grotty hack to support xterm and DECterm title
2523 * sequences concurrently.
2525 if (term->esc_args[0] == 2) {
2526 term->esc_args[0] = 1;
2529 /* else fall through */
2531 term->termstate = OSC_STRING;
2532 term->osc_strlen = 0;
2537 * This OSC stuff is EVIL. It takes just one character to get into
2538 * sysline mode and it's not initially obvious how to get out.
2539 * So I've added CR and LF as string aborts.
2540 * This shouldn't effect compatibility as I believe embedded
2541 * control characters are supposed to be interpreted (maybe?)
2542 * and they don't display anything useful anyway.
2546 if (c == '\012' || c == '\015') {
2547 term->termstate = TOPLEVEL;
2548 } else if (c == 0234 || c == '\007') {
2550 * These characters terminate the string; ST and BEL
2551 * terminate the sequence and trigger instant
2552 * processing of it, whereas ESC goes back to SEEN_ESC
2553 * mode unless it is followed by \, in which case it is
2554 * synonymous with ST in the first place.
2557 term->termstate = TOPLEVEL;
2558 } else if (c == '\033')
2559 term->termstate = OSC_MAYBE_ST;
2560 else if (term->osc_strlen < OSC_STR_MAX)
2561 term->osc_string[term->osc_strlen++] = c;
2565 int max = (term->osc_strlen == 0 ? 21 : 16);
2567 if (c >= '0' && c <= '9')
2569 else if (c >= 'A' && c <= 'A' + max - 10)
2571 else if (c >= 'a' && c <= 'a' + max - 10)
2574 term->termstate = TOPLEVEL;
2577 term->osc_string[term->osc_strlen++] = val;
2578 if (term->osc_strlen >= 7) {
2579 palette_set(term->frontend, term->osc_string[0],
2580 term->osc_string[1] * 16 + term->osc_string[2],
2581 term->osc_string[3] * 16 + term->osc_string[4],
2582 term->osc_string[5] * 16 + term->osc_string[6]);
2583 term_invalidate(term);
2584 term->termstate = TOPLEVEL;
2600 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
2603 term->termstate = OSC_STRING;
2604 term->osc_strlen = 0;
2608 term->termstate = TOPLEVEL;
2609 term->seen_disp_event = TRUE;
2612 move(term, term->curs.x, term->curs.y - 1, 1);
2615 move(term, term->curs.x, term->curs.y + 1, 1);
2618 move(term, term->curs.x + 1, term->curs.y, 1);
2621 move(term, term->curs.x - 1, term->curs.y, 1);
2624 * From the VT100 Manual
2625 * NOTE: The special graphics characters in the VT100
2626 * are different from those in the VT52
2628 * From VT102 manual:
2629 * 137 _ Blank - Same
2630 * 140 ` Reserved - Humm.
2631 * 141 a Solid rectangle - Similar
2632 * 142 b 1/ - Top half of fraction for the
2633 * 143 c 3/ - subscript numbers below.
2636 * 146 f Degrees - Same
2637 * 147 g Plus or minus - Same
2639 * 151 i Ellipsis (dots)
2642 * 154 l Bar at scan 0
2643 * 155 m Bar at scan 1
2644 * 156 n Bar at scan 2
2645 * 157 o Bar at scan 3 - Similar
2646 * 160 p Bar at scan 4 - Similar
2647 * 161 q Bar at scan 5 - Similar
2648 * 162 r Bar at scan 6 - Same
2649 * 163 s Bar at scan 7 - Similar
2664 term->cset_attr[term->cset = 0] = ATTR_LINEDRW;
2667 term->cset_attr[term->cset = 0] = ATTR_ASCII;
2670 move(term, 0, 0, 0);
2673 if (term->curs.y == 0)
2674 scroll(term, 0, term->rows - 1, -1, TRUE);
2675 else if (term->curs.y > 0)
2678 term->wrapnext = FALSE;
2681 erase_lots(term, FALSE, FALSE, TRUE);
2685 erase_lots(term, TRUE, FALSE, TRUE);
2689 /* XXX Print cursor line */
2692 /* XXX Start controller mode */
2695 /* XXX Stop controller mode */
2699 term->termstate = VT52_Y1;
2703 ldisc_send(term->ldisc, "\033/Z", 3, 0);
2706 term->app_keypad_keys = TRUE;
2709 term->app_keypad_keys = FALSE;
2712 /* XXX This should switch to VT100 mode not current or default
2713 * VT mode. But this will only have effect in a VT220+
2716 term->vt52_mode = FALSE;
2717 term->blink_is_real = term->cfg->blinktext;
2721 /* XXX Enter auto print mode */
2724 /* XXX Exit auto print mode */
2727 /* XXX Print screen */
2733 /* compatibility(ATARI) */
2734 move(term, 0, 0, 0);
2735 erase_lots(term, FALSE, FALSE, TRUE);
2739 /* compatibility(ATARI) */
2740 if (term->curs.y <= term->marg_b)
2741 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
2744 /* compatibility(ATARI) */
2745 if (term->curs.y <= term->marg_b)
2746 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
2749 /* compatibility(ATARI) */
2750 term->termstate = VT52_FG;
2753 /* compatibility(ATARI) */
2754 term->termstate = VT52_BG;
2757 /* compatibility(ATARI) */
2758 erase_lots(term, FALSE, TRUE, FALSE);
2762 /* compatibility(ATARI) */
2763 term->cursor_on = TRUE;
2766 /* compatibility(ATARI) */
2767 term->cursor_on = FALSE;
2769 /* case 'j': Save cursor position - broken on ST */
2770 /* case 'k': Restore cursor position */
2772 /* compatibility(ATARI) */
2773 erase_lots(term, TRUE, TRUE, TRUE);
2775 term->wrapnext = FALSE;
2779 /* compatibility(ATARI) */
2780 erase_lots(term, TRUE, TRUE, FALSE);
2783 /* compatibility(ATARI) */
2784 term->curr_attr |= ATTR_REVERSE;
2787 /* compatibility(ATARI) */
2788 term->curr_attr &= ~ATTR_REVERSE;
2790 case 'v': /* wrap Autowrap on - Wyse style */
2791 /* compatibility(ATARI) */
2794 case 'w': /* Autowrap off */
2795 /* compatibility(ATARI) */
2800 /* compatibility(OTHER) */
2801 term->vt52_bold = FALSE;
2802 term->curr_attr = ATTR_DEFAULT;
2804 term->erase_char = (' ' | ATTR_ASCII |
2806 (ATTR_FGMASK | ATTR_BGMASK)));
2809 /* compatibility(VI50) */
2810 term->curr_attr |= ATTR_UNDER;
2813 /* compatibility(VI50) */
2814 term->curr_attr &= ~ATTR_UNDER;
2817 /* compatibility(VI50) */
2818 term->vt52_bold = TRUE;
2819 term->curr_attr |= ATTR_BOLD;
2822 /* compatibility(VI50) */
2823 term->vt52_bold = FALSE;
2824 term->curr_attr &= ~ATTR_BOLD;
2830 term->termstate = VT52_Y2;
2831 move(term, term->curs.x, c - ' ', 0);
2834 term->termstate = TOPLEVEL;
2835 move(term, c - ' ', term->curs.y, 0);
2840 term->termstate = TOPLEVEL;
2841 term->curr_attr &= ~ATTR_FGMASK;
2842 term->curr_attr &= ~ATTR_BOLD;
2843 term->curr_attr |= (c & 0x7) << ATTR_FGSHIFT;
2844 if ((c & 0x8) || term->vt52_bold)
2845 term->curr_attr |= ATTR_BOLD;
2848 term->erase_char = (' ' | ATTR_ASCII |
2850 (ATTR_FGMASK | ATTR_BGMASK)));
2853 term->termstate = TOPLEVEL;
2854 term->curr_attr &= ~ATTR_BGMASK;
2855 term->curr_attr &= ~ATTR_BLINK;
2856 term->curr_attr |= (c & 0x7) << ATTR_BGSHIFT;
2858 /* Note: bold background */
2860 term->curr_attr |= ATTR_BLINK;
2863 term->erase_char = (' ' | ATTR_ASCII |
2865 (ATTR_FGMASK | ATTR_BGMASK)));
2868 default: break; /* placate gcc warning about enum use */
2870 if (term->selstate != NO_SELECTION) {
2871 pos cursplus = term->curs;
2873 check_selection(term, term->curs, cursplus);
2877 term_print_flush(term);
2882 * Compare two lines to determine whether they are sufficiently
2883 * alike to scroll-optimise one to the other. Return the degree of
2886 static int linecmp(Terminal *term, unsigned long *a, unsigned long *b)
2890 for (i = n = 0; i < term->cols; i++)
2891 n += (*a++ == *b++);
2897 * Given a context, update the window. Out of paranoia, we don't
2898 * allow WM_PAINT responses to do scrolling optimisations.
2900 static void do_paint(Terminal *term, Context ctx, int may_optimise)
2902 int i, j, our_curs_y;
2903 unsigned long rv, cursor;
2906 long cursor_background = ERASE_CHAR;
2907 unsigned long ticks;
2910 * Check the visual bell state.
2912 if (term->in_vbell) {
2913 ticks = GETTICKCOUNT();
2914 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
2915 term->in_vbell = FALSE;
2918 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
2921 * screen array, disptop, scrtop,
2923 * cfg.blinkpc, blink_is_real, tblinker,
2924 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
2927 /* Has the cursor position or type changed ? */
2928 if (term->cursor_on) {
2929 if (term->has_focus) {
2930 if (term->blinker || !term->cfg->blink_cur)
2931 cursor = TATTR_ACTCURS;
2935 cursor = TATTR_PASCURS;
2937 cursor |= TATTR_RIGHTCURS;
2940 our_curs_y = term->curs.y - term->disptop;
2942 if (term->dispcurs && (term->curstype != cursor ||
2944 term->disptext + our_curs_y * (term->cols + 1) +
2946 if (term->dispcurs > term->disptext &&
2947 (*term->dispcurs & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
2948 term->dispcurs[-1] |= ATTR_INVALID;
2949 if ( (term->dispcurs[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
2950 term->dispcurs[1] |= ATTR_INVALID;
2951 *term->dispcurs |= ATTR_INVALID;
2954 term->dispcurs = NULL;
2956 /* The normal screen data */
2957 for (i = 0; i < term->rows; i++) {
2958 unsigned long *ldata;
2960 int idx, dirty_line, dirty_run, selected;
2961 unsigned long attr = 0;
2962 int updated_line = 0;
2965 int last_run_dirty = 0;
2967 scrpos.y = i + term->disptop;
2968 ldata = lineptr(scrpos.y);
2969 lattr = (ldata[term->cols] & LATTR_MODE);
2971 idx = i * (term->cols + 1);
2972 dirty_run = dirty_line = (ldata[term->cols] !=
2973 term->disptext[idx + term->cols]);
2974 term->disptext[idx + term->cols] = ldata[term->cols];
2976 for (j = 0; j < term->cols; j++, idx++) {
2977 unsigned long tattr, tchar;
2978 unsigned long *d = ldata + j;
2982 tchar = (*d & (CHAR_MASK | CSET_MASK));
2983 tattr = (*d & (ATTR_MASK ^ CSET_MASK));
2984 switch (tchar & CSET_MASK) {
2986 tchar = unitab_line[tchar & 0xFF];
2989 tchar = unitab_xterm[tchar & 0xFF];
2992 tchar = unitab_scoacs[tchar&0xFF];
2995 tattr |= (tchar & CSET_MASK);
2997 if ((d[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3000 /* Video reversing things */
3001 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
3002 if (term->seltype == LEXICOGRAPHIC)
3003 selected = (posle(term->selstart, scrpos) &&
3004 poslt(scrpos, term->selend));
3006 selected = (posPle(term->selstart, scrpos) &&
3007 posPlt(scrpos, term->selend));
3011 ^ (selected ? ATTR_REVERSE : 0));
3013 /* 'Real' blinking ? */
3014 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
3015 if (term->has_focus && term->tblinker) {
3017 tattr &= ~CSET_MASK;
3020 tattr &= ~ATTR_BLINK;
3024 * Check the font we'll _probably_ be using to see if
3025 * the character is wide when we don't want it to be.
3027 if ((tchar | tattr) != (term->disptext[idx]& ~ATTR_NARROW)) {
3028 if ((tattr & ATTR_WIDE) == 0 &&
3029 char_width(ctx, (tchar | tattr) & 0xFFFF) == 2)
3030 tattr |= ATTR_NARROW;
3031 } else if (term->disptext[idx]&ATTR_NARROW)
3032 tattr |= ATTR_NARROW;
3034 /* Cursor here ? Save the 'background' */
3035 if (i == our_curs_y && j == term->curs.x) {
3036 cursor_background = tattr | tchar;
3037 term->dispcurs = term->disptext + idx;
3040 if ((term->disptext[idx] ^ tattr) & ATTR_WIDE)
3043 break_run = (((tattr ^ attr) & term->attr_mask) ||
3044 j - start >= sizeof(ch));
3046 /* Special hack for VT100 Linedraw glyphs */
3047 if ((attr & CSET_MASK) == 0x2300 && tchar >= 0xBA
3048 && tchar <= 0xBD) break_run = TRUE;
3050 if (!dbcs_screenfont && !dirty_line) {
3051 if ((tchar | tattr) == term->disptext[idx])
3053 else if (!dirty_run && ccount == 1)
3058 if ((dirty_run || last_run_dirty) && ccount > 0) {
3059 do_text(ctx, start, i, ch, ccount, attr, lattr);
3065 if (dbcs_screenfont)
3066 last_run_dirty = dirty_run;
3067 dirty_run = dirty_line;
3070 if ((tchar | tattr) != term->disptext[idx])
3072 ch[ccount++] = (char) tchar;
3073 term->disptext[idx] = tchar | tattr;
3075 /* If it's a wide char step along to the next one. */
3076 if (tattr & ATTR_WIDE) {
3077 if (++j < term->cols) {
3080 /* Cursor is here ? Ouch! */
3081 if (i == our_curs_y && j == term->curs.x) {
3082 cursor_background = *d;
3083 term->dispcurs = term->disptext + idx;
3085 if (term->disptext[idx] != *d)
3087 term->disptext[idx] = *d;
3091 if (dirty_run && ccount > 0) {
3092 do_text(ctx, start, i, ch, ccount, attr, lattr);
3096 /* Cursor on this line ? (and changed) */
3097 if (i == our_curs_y && (term->curstype != cursor || updated_line)) {
3098 ch[0] = (char) (cursor_background & CHAR_MASK);
3099 attr = (cursor_background & ATTR_MASK) | cursor;
3100 do_cursor(ctx, term->curs.x, i, ch, 1, attr, lattr);
3101 term->curstype = cursor;
3107 * Flick the switch that says if blinking things should be shown or hidden.
3110 void term_blink(Terminal *term, int flg)
3112 long now, blink_diff;
3114 now = GETTICKCOUNT();
3115 blink_diff = now - term->last_tblink;
3117 /* Make sure the text blinks no more than 2Hz; we'll use 0.45 s period. */
3118 if (blink_diff < 0 || blink_diff > (TICKSPERSEC * 9 / 20)) {
3119 term->last_tblink = now;
3120 term->tblinker = !term->tblinker;
3125 term->last_blink = now;
3129 blink_diff = now - term->last_blink;
3131 /* Make sure the cursor blinks no faster than system blink rate */
3132 if (blink_diff >= 0 && blink_diff < (long) CURSORBLINK)
3135 term->last_blink = now;
3136 term->blinker = !term->blinker;
3140 * Invalidate the whole screen so it will be repainted in full.
3142 void term_invalidate(Terminal *term)
3146 for (i = 0; i < term->rows * (term->cols + 1); i++)
3147 term->disptext[i] = ATTR_INVALID;
3151 * Paint the window in response to a WM_PAINT message.
3153 void term_paint(Terminal *term, Context ctx,
3154 int left, int top, int right, int bottom, int immediately)
3157 if (left < 0) left = 0;
3158 if (top < 0) top = 0;
3159 if (right >= term->cols) right = term->cols-1;
3160 if (bottom >= term->rows) bottom = term->rows-1;
3162 for (i = top; i <= bottom && i < term->rows; i++) {
3163 if ((term->disptext[i * (term->cols + 1) + term->cols] &
3164 LATTR_MODE) == LATTR_NORM)
3165 for (j = left; j <= right && j < term->cols; j++)
3166 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
3168 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
3169 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
3172 /* This should happen soon enough, also for some reason it sometimes
3173 * fails to actually do anything when re-sizing ... painting the wrong
3177 do_paint (term, ctx, FALSE);
3181 * Attempt to scroll the scrollback. The second parameter gives the
3182 * position we want to scroll to; the first is +1 to denote that
3183 * this position is relative to the beginning of the scrollback, -1
3184 * to denote it is relative to the end, and 0 to denote that it is
3185 * relative to the current position.
3187 void term_scroll(Terminal *term, int rel, int where)
3189 int sbtop = -count234(term->scrollback);
3190 #ifdef OPTIMISE_SCROLL
3191 int olddisptop = term->disptop;
3193 #endif /* OPTIMISE_SCROLL */
3195 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
3196 if (term->disptop < sbtop)
3197 term->disptop = sbtop;
3198 if (term->disptop > 0)
3201 #ifdef OPTIMISE_SCROLL
3202 shift = (term->disptop - olddisptop);
3203 if (shift < term->rows && shift > -term->rows)
3204 scroll_display(term, 0, term->rows - 1, shift);
3205 #endif /* OPTIMISE_SCROLL */
3209 static void clipme(Terminal *term, pos top, pos bottom, int rect)
3212 wchar_t *wbptr; /* where next char goes within workbuf */
3214 int wblen = 0; /* workbuf len */
3215 int buflen; /* amount of memory allocated to workbuf */
3217 buflen = 5120; /* Default size */
3218 workbuf = smalloc(buflen * sizeof(wchar_t));
3219 wbptr = workbuf; /* start filling here */
3220 old_top_x = top.x; /* needed for rect==1 */
3222 while (poslt(top, bottom)) {
3224 unsigned long *ldata = lineptr(top.y);
3228 * nlpos will point at the maximum position on this line we
3229 * should copy up to. So we start it at the end of the
3233 nlpos.x = term->cols;
3236 * ... move it backwards if there's unused space at the end
3237 * of the line (and also set `nl' if this is the case,
3238 * because in normal selection mode this means we need a
3239 * newline at the end)...
3241 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3242 while (((ldata[nlpos.x - 1] & 0xFF) == 0x20 ||
3243 (DIRECT_CHAR(ldata[nlpos.x - 1]) &&
3244 (ldata[nlpos.x - 1] & CHAR_MASK) == 0x20))
3245 && poslt(top, nlpos))
3247 if (poslt(nlpos, bottom))
3252 * ... and then clip it to the terminal x coordinate if
3253 * we're doing rectangular selection. (In this case we
3254 * still did the above, so that copying e.g. the right-hand
3255 * column from a table doesn't fill with spaces on the
3259 if (nlpos.x > bottom.x)
3261 nl = (top.y < bottom.y);
3264 while (poslt(top, bottom) && poslt(top, nlpos)) {
3267 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
3269 wchar_t cbuf[16], *p;
3270 int uc = (ldata[top.x] & 0xFFFF);
3273 if (uc == UCSWIDE) {
3278 switch (uc & CSET_MASK) {
3280 if (!term->cfg->rawcnp) {
3281 uc = unitab_xterm[uc & 0xFF];
3285 uc = unitab_line[uc & 0xFF];
3288 uc = unitab_scoacs[uc&0xFF];
3291 switch (uc & CSET_MASK) {
3293 uc = unitab_font[uc & 0xFF];
3296 uc = unitab_oemcp[uc & 0xFF];
3300 set = (uc & CSET_MASK);
3301 c = (uc & CHAR_MASK);
3305 if (DIRECT_FONT(uc)) {
3306 if (c >= ' ' && c != 0x7F) {
3310 if (is_dbcs_leadbyte(font_codepage, (BYTE) c)) {
3312 buf[1] = ldata[top.x + 1];
3313 rv = mb_to_wc(font_codepage, 0, buf, 2, wbuf, 4);
3317 rv = mb_to_wc(font_codepage, 0, buf, 1, wbuf, 4);
3321 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
3328 for (p = cbuf; *p; p++) {
3329 /* Enough overhead for trailing NL and nul */
3330 if (wblen >= buflen - 16) {
3333 sizeof(wchar_t) * (buflen += 100));
3334 wbptr = workbuf + wblen;
3343 for (i = 0; i < sel_nl_sz; i++) {
3345 *wbptr++ = sel_nl[i];
3349 top.x = rect ? old_top_x : 0;
3351 #if SELECTION_NUL_TERMINATED
3355 write_clip(term->frontend, workbuf, wblen, FALSE); /* transfer to clipbd */
3356 if (buflen > 0) /* indicates we allocated this buffer */
3360 void term_copyall(Terminal *term)
3363 top.y = -count234(term->scrollback);
3365 clipme(term, top, term->curs, 0);
3369 * The wordness array is mainly for deciding the disposition of the
3370 * US-ASCII characters.
3372 static int wordtype(Terminal *term, int uc)
3375 int start, end, ctype;
3377 static const struct ucsword ucs_words[] = {
3383 0x037e, 0x037e, 1}, /* Greek question mark */
3385 0x0387, 0x0387, 1}, /* Greek ano teleia */
3387 0x055a, 0x055f, 1}, /* Armenian punctuation */
3389 0x0589, 0x0589, 1}, /* Armenian full stop */
3391 0x0700, 0x070d, 1}, /* Syriac punctuation */
3393 0x104a, 0x104f, 1}, /* Myanmar punctuation */
3395 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
3397 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
3399 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
3401 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
3403 0x1800, 0x180a, 1}, /* Mongolian punctuation */
3405 0x2000, 0x200a, 0}, /* Various spaces */
3407 0x2070, 0x207f, 2}, /* superscript */
3409 0x2080, 0x208f, 2}, /* subscript */
3411 0x200b, 0x27ff, 1}, /* punctuation and symbols */
3413 0x3000, 0x3000, 0}, /* ideographic space */
3415 0x3001, 0x3020, 1}, /* ideographic punctuation */
3417 0x303f, 0x309f, 3}, /* Hiragana */
3419 0x30a0, 0x30ff, 3}, /* Katakana */
3421 0x3300, 0x9fff, 3}, /* CJK Ideographs */
3423 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
3425 0xf900, 0xfaff, 3}, /* CJK Ideographs */
3427 0xfe30, 0xfe6b, 1}, /* punctuation forms */
3429 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
3431 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
3433 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
3435 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
3437 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
3441 const struct ucsword *wptr;
3443 uc &= (CSET_MASK | CHAR_MASK);
3445 switch (uc & CSET_MASK) {
3447 uc = unitab_xterm[uc & 0xFF];
3450 uc = unitab_line[uc & 0xFF];
3453 uc = unitab_scoacs[uc&0xFF];
3456 switch (uc & CSET_MASK) {
3458 uc = unitab_font[uc & 0xFF];
3461 uc = unitab_oemcp[uc & 0xFF];
3465 /* For DBCS font's I can't do anything usefull. Even this will sometimes
3466 * fail as there's such a thing as a double width space. :-(
3468 if (dbcs_screenfont && font_codepage == line_codepage)
3472 return term->wordness[uc];
3474 for (wptr = ucs_words; wptr->start; wptr++) {
3475 if (uc >= wptr->start && uc <= wptr->end)
3483 * Spread the selection outwards according to the selection mode.
3485 static pos sel_spread_half(Terminal *term, pos p, int dir)
3487 unsigned long *ldata;
3489 int topy = -count234(term->scrollback);
3491 ldata = lineptr(p.y);
3493 switch (term->selmode) {
3496 * In this mode, every character is a separate unit, except
3497 * for runs of spaces at the end of a non-wrapping line.
3499 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3500 unsigned long *q = ldata + term->cols;
3501 while (q > ldata && (q[-1] & CHAR_MASK) == 0x20)
3503 if (q == ldata + term->cols)
3505 if (p.x >= q - ldata)
3506 p.x = (dir == -1 ? q - ldata : term->cols - 1);
3511 * In this mode, the units are maximal runs of characters
3512 * whose `wordness' has the same value.
3514 wvalue = wordtype(term, ldata[p.x]);
3517 if (p.x < term->cols-1) {
3518 if (wordtype(term, ldata[p.x + 1]) == wvalue)
3523 if (ldata[term->cols] & LATTR_WRAPPED) {
3524 unsigned long *ldata2;
3525 ldata2 = lineptr(p.y+1);
3526 if (wordtype(term, ldata2[0]) == wvalue) {
3539 if (wordtype(term, ldata[p.x - 1]) == wvalue)
3544 unsigned long *ldata2;
3547 ldata2 = lineptr(p.y-1);
3548 if ((ldata2[term->cols] & LATTR_WRAPPED) &&
3549 wordtype(term, ldata2[term->cols-1]) == wvalue) {
3561 * In this mode, every line is a unit.
3563 p.x = (dir == -1 ? 0 : term->cols - 1);
3569 static void sel_spread(Terminal *term)
3571 if (term->seltype == LEXICOGRAPHIC) {
3572 term->selstart = sel_spread_half(term, term->selstart, -1);
3573 decpos(term->selend);
3574 term->selend = sel_spread_half(term, term->selend, +1);
3575 incpos(term->selend);
3579 void term_do_paste(Terminal *term)
3584 get_clip(term->frontend, &data, &len);
3585 if (data && len > 0) {
3588 term_seen_key_event(term); /* pasted data counts */
3590 if (term->paste_buffer)
3591 sfree(term->paste_buffer);
3592 term->paste_pos = term->paste_hold = term->paste_len = 0;
3593 term->paste_buffer = smalloc(len * sizeof(wchar_t));
3596 while (p < data + len) {
3597 while (p < data + len &&
3598 !(p <= data + len - sel_nl_sz &&
3599 !memcmp(p, sel_nl, sizeof(sel_nl))))
3604 for (i = 0; i < p - q; i++) {
3605 term->paste_buffer[term->paste_len++] = q[i];
3609 if (p <= data + len - sel_nl_sz &&
3610 !memcmp(p, sel_nl, sizeof(sel_nl))) {
3611 term->paste_buffer[term->paste_len++] = '\015';
3617 /* Assume a small paste will be OK in one go. */
3618 if (term->paste_len < 256) {
3620 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
3621 if (term->paste_buffer)
3622 sfree(term->paste_buffer);
3623 term->paste_buffer = 0;
3624 term->paste_pos = term->paste_hold = term->paste_len = 0;
3627 get_clip(term->frontend, NULL, NULL);
3630 void term_mouse(Terminal *term, Mouse_Button b, Mouse_Action a, int x, int y,
3631 int shift, int ctrl, int alt)
3634 unsigned long *ldata;
3635 int raw_mouse = (term->xterm_mouse &&
3636 !term->cfg->no_mouse_rep &&
3637 !(term->cfg->mouse_override && shift));
3638 int default_seltype;
3642 if (a == MA_DRAG && !raw_mouse)
3643 term_scroll(term, 0, -1);
3645 if (y >= term->rows) {
3647 if (a == MA_DRAG && !raw_mouse)
3648 term_scroll(term, 0, +1);
3657 if (x >= term->cols)
3660 selpoint.y = y + term->disptop;
3662 ldata = lineptr(selpoint.y);
3663 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM)
3667 int encstate = 0, r, c;
3674 encstate = 0x20; /* left button down */
3685 case MBT_WHEEL_DOWN:
3688 default: break; /* placate gcc warning about enum use */
3692 if (term->xterm_mouse == 1)
3698 term->mouse_is_down = 0;
3701 if (term->mouse_is_down == b)
3703 term->mouse_is_down = b;
3705 default: break; /* placate gcc warning about enum use */
3714 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
3715 ldisc_send(term->ldisc, abuf, 6, 0);
3720 b = translate_button(term->frontend, b);
3723 * Set the selection type (rectangular or normal) at the start
3724 * of a selection attempt, from the state of Alt.
3726 if (!alt ^ !term->cfg->rect_select)
3727 default_seltype = RECTANGULAR;
3729 default_seltype = LEXICOGRAPHIC;
3731 if (term->selstate == NO_SELECTION) {
3732 term->seltype = default_seltype;
3735 if (b == MBT_SELECT && a == MA_CLICK) {
3737 term->selstate = ABOUT_TO;
3738 term->seltype = default_seltype;
3739 term->selanchor = selpoint;
3740 term->selmode = SM_CHAR;
3741 } else if (b == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
3743 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
3744 term->selstate = DRAGGING;
3745 term->selstart = term->selanchor = selpoint;
3746 term->selend = term->selstart;
3747 incpos(term->selend);
3749 } else if ((b == MBT_SELECT && a == MA_DRAG) ||
3750 (b == MBT_EXTEND && a != MA_RELEASE)) {
3751 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
3753 if (b == MBT_EXTEND && a != MA_DRAG && term->selstate == SELECTED) {
3754 if (term->seltype == LEXICOGRAPHIC) {
3756 * For normal selection, we extend by moving
3757 * whichever end of the current selection is closer
3760 if (posdiff(selpoint, term->selstart) <
3761 posdiff(term->selend, term->selstart) / 2) {
3762 term->selanchor = term->selend;
3763 decpos(term->selanchor);
3765 term->selanchor = term->selstart;
3769 * For rectangular selection, we have a choice of
3770 * _four_ places to put selanchor and selpoint: the
3771 * four corners of the selection.
3773 if (2*selpoint.x < term->selstart.x + term->selend.x)
3774 term->selanchor.x = term->selend.x-1;
3776 term->selanchor.x = term->selstart.x;
3778 if (2*selpoint.y < term->selstart.y + term->selend.y)
3779 term->selanchor.y = term->selend.y;
3781 term->selanchor.y = term->selstart.y;
3783 term->selstate = DRAGGING;
3785 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
3786 term->selanchor = selpoint;
3787 term->selstate = DRAGGING;
3788 if (term->seltype == LEXICOGRAPHIC) {
3790 * For normal selection, we set (selstart,selend) to
3791 * (selpoint,selanchor) in some order.
3793 if (poslt(selpoint, term->selanchor)) {
3794 term->selstart = selpoint;
3795 term->selend = term->selanchor;
3796 incpos(term->selend);
3798 term->selstart = term->selanchor;
3799 term->selend = selpoint;
3800 incpos(term->selend);
3804 * For rectangular selection, we may need to
3805 * interchange x and y coordinates (if the user has
3806 * dragged in the -x and +y directions, or vice versa).
3808 term->selstart.x = min(term->selanchor.x, selpoint.x);
3809 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
3810 term->selstart.y = min(term->selanchor.y, selpoint.y);
3811 term->selend.y = max(term->selanchor.y, selpoint.y);
3814 } else if ((b == MBT_SELECT || b == MBT_EXTEND) && a == MA_RELEASE) {
3815 if (term->selstate == DRAGGING) {
3817 * We've completed a selection. We now transfer the
3818 * data to the clipboard.
3820 clipme(term, term->selstart, term->selend,
3821 (term->seltype == RECTANGULAR));
3822 term->selstate = SELECTED;
3824 term->selstate = NO_SELECTION;
3825 } else if (b == MBT_PASTE
3827 #if MULTICLICK_ONLY_EVENT
3828 || a == MA_2CLK || a == MA_3CLK
3831 request_paste(term->frontend);
3837 void term_nopaste(Terminal *term)
3839 if (term->paste_len == 0)
3841 sfree(term->paste_buffer);
3842 term->paste_buffer = NULL;
3843 term->paste_len = 0;
3846 int term_paste_pending(Terminal *term)
3848 return term->paste_len != 0;
3851 void term_paste(Terminal *term)
3853 long now, paste_diff;
3855 if (term->paste_len == 0)
3858 /* Don't wait forever to paste */
3859 if (term->paste_hold) {
3860 now = GETTICKCOUNT();
3861 paste_diff = now - term->last_paste;
3862 if (paste_diff >= 0 && paste_diff < 450)
3865 term->paste_hold = 0;
3867 while (term->paste_pos < term->paste_len) {
3869 while (n + term->paste_pos < term->paste_len) {
3870 if (term->paste_buffer[term->paste_pos + n++] == '\015')
3874 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
3875 term->paste_pos += n;
3877 if (term->paste_pos < term->paste_len) {
3878 term->paste_hold = 1;
3882 sfree(term->paste_buffer);
3883 term->paste_buffer = NULL;
3884 term->paste_len = 0;
3887 static void deselect(Terminal *term)
3889 term->selstate = NO_SELECTION;
3890 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
3893 void term_deselect(Terminal *term)
3899 int term_ldisc(Terminal *term, int option)
3901 if (option == LD_ECHO)
3902 return term->term_echoing;
3903 if (option == LD_EDIT)
3904 return term->term_editing;
3909 * from_backend(), to get data from the backend for the terminal.
3911 int from_backend(void *vterm, int is_stderr, char *data, int len)
3913 Terminal *term = (Terminal *)vterm;
3917 bufchain_add(&term->inbuf, data, len);
3920 * term_out() always completely empties inbuf. Therefore,
3921 * there's no reason at all to return anything other than zero
3922 * from this function, because there _can't_ be a question of
3923 * the remote side needing to wait until term_out() has cleared
3926 * This is a slightly suboptimal way to deal with SSH2 - in
3927 * principle, the window mechanism would allow us to continue
3928 * to accept data on forwarded ports and X connections even
3929 * while the terminal processing was going slowly - but we
3930 * can't do the 100% right thing without moving the terminal
3931 * processing into a separate thread, and that might hurt
3932 * portability. So we manage stdout buffering the old SSH1 way:
3933 * if the terminal processing goes slowly, the whole SSH
3934 * connection stops accepting data until it's ready.
3936 * In practice, I can't imagine this causing serious trouble.
3941 void term_provide_logctx(Terminal *term, void *logctx)
3943 term->logctx = logctx;