10 #define poslt(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x < (p2).x ) )
11 #define posle(p1,p2) ( (p1).y < (p2).y || ( (p1).y == (p2).y && (p1).x <= (p2).x ) )
12 #define poseq(p1,p2) ( (p1).y == (p2).y && (p1).x == (p2).x )
13 #define posdiff(p1,p2) ( ((p1).y - (p2).y) * (term->cols+1) + (p1).x - (p2).x )
15 /* Product-order comparisons for rectangular block selection. */
16 #define posPlt(p1,p2) ( (p1).y <= (p2).y && (p1).x < (p2).x )
17 #define posPle(p1,p2) ( (p1).y <= (p2).y && (p1).x <= (p2).x )
19 #define incpos(p) ( (p).x == term->cols ? ((p).x = 0, (p).y++, 1) : ((p).x++, 0) )
20 #define decpos(p) ( (p).x == 0 ? ((p).x = term->cols, (p).y--, 1) : ((p).x--, 0) )
24 #define CL_ANSIMIN 0x0001 /* Codes in all ANSI like terminals. */
25 #define CL_VT100 0x0002 /* VT100 */
26 #define CL_VT100AVO 0x0004 /* VT100 +AVO; 132x24 (not 132x14) & attrs */
27 #define CL_VT102 0x0008 /* VT102 */
28 #define CL_VT220 0x0010 /* VT220 */
29 #define CL_VT320 0x0020 /* VT320 */
30 #define CL_VT420 0x0040 /* VT420 */
31 #define CL_VT510 0x0080 /* VT510, NB VT510 includes ANSI */
32 #define CL_VT340TEXT 0x0100 /* VT340 extensions that appear in the VT420 */
33 #define CL_SCOANSI 0x1000 /* SCOANSI not in ANSIMIN. */
34 #define CL_ANSI 0x2000 /* ANSI ECMA-48 not in the VT100..VT420 */
35 #define CL_OTHER 0x4000 /* Others, Xterm, linux, putty, dunno, etc */
37 #define TM_VT100 (CL_ANSIMIN|CL_VT100)
38 #define TM_VT100AVO (TM_VT100|CL_VT100AVO)
39 #define TM_VT102 (TM_VT100AVO|CL_VT102)
40 #define TM_VT220 (TM_VT102|CL_VT220)
41 #define TM_VTXXX (TM_VT220|CL_VT340TEXT|CL_VT510|CL_VT420|CL_VT320)
42 #define TM_SCOANSI (CL_ANSIMIN|CL_SCOANSI)
44 #define TM_PUTTY (0xFFFF)
46 #define compatibility(x) \
47 if ( ((CL_##x)&term->compatibility_level) == 0 ) { \
48 term->termstate=TOPLEVEL; \
51 #define compatibility2(x,y) \
52 if ( ((CL_##x|CL_##y)&term->compatibility_level) == 0 ) { \
53 term->termstate=TOPLEVEL; \
57 #define has_compat(x) ( ((CL_##x)&term->compatibility_level) != 0 )
59 #define sel_nl_sz (sizeof(sel_nl)/sizeof(wchar_t))
60 const wchar_t sel_nl[] = SEL_NL;
63 * Fetch the character at a particular position in a line array,
64 * for purposes of `wordtype'. The reason this isn't just a simple
65 * array reference is that if the character we find is UCSWIDE,
66 * then we must look one space further to the left.
68 #define UCSGET(a, x) \
69 ( (x)>0 && ((a)[(x)] & (CHAR_MASK | CSET_MASK)) == UCSWIDE ? \
70 (a)[(x)-1] : (a)[(x)] )
73 * Internal prototypes.
75 static unsigned long *resizeline(unsigned long *, int);
76 static unsigned long *lineptr(Terminal *, int, int);
77 static void do_paint(Terminal *, Context, int);
78 static void erase_lots(Terminal *, int, int, int);
79 static void swap_screen(Terminal *, int, int, int);
80 static void update_sbar(Terminal *);
81 static void deselect(Terminal *);
82 static void term_print_finish(Terminal *);
83 #ifdef OPTIMISE_SCROLL
84 static void scroll_display(Terminal *, int, int, int);
85 #endif /* OPTIMISE_SCROLL */
88 * Resize a line to make it `cols' columns wide.
90 static unsigned long *resizeline(unsigned long *line, int cols)
93 unsigned long lineattrs;
95 if (line[0] != (unsigned long)cols) {
97 * This line is the wrong length, which probably means it
98 * hasn't been accessed since a resize. Resize it now.
101 lineattrs = line[oldlen + 1];
102 line = sresize(line, 2 + cols, TTYPE);
104 for (i = oldlen; i < cols; i++)
105 line[i + 1] = ERASE_CHAR;
106 line[cols + 1] = lineattrs & LATTR_MODE;
113 * Get the number of lines in the scrollback.
115 static int sblines(Terminal *term)
117 int sblines = count234(term->scrollback);
118 if (term->cfg.erase_to_scrollback &&
119 term->alt_which && term->alt_screen) {
120 sblines += term->alt_sblines;
126 * Retrieve a line of the screen or of the scrollback, according to
127 * whether the y coordinate is non-negative or negative
130 static unsigned long *lineptr(Terminal *term, int y, int lineno)
132 unsigned long *line, *newline;
137 whichtree = term->screen;
141 if (term->cfg.erase_to_scrollback &&
142 term->alt_which && term->alt_screen) {
143 altlines = term->alt_sblines;
146 whichtree = term->scrollback;
147 treeindex = y + altlines + count234(term->scrollback);
149 whichtree = term->alt_screen;
150 treeindex = y + term->alt_sblines;
151 /* treeindex = y + count234(term->alt_screen); */
154 line = index234(whichtree, treeindex);
156 /* We assume that we don't screw up and retrieve something out of range. */
157 assert(line != NULL);
159 newline = resizeline(line, term->cols);
160 if (newline != line) {
161 delpos234(whichtree, treeindex);
162 addpos234(whichtree, newline, treeindex);
169 #define lineptr(x) lineptr(term,x,__LINE__)
172 * Set up power-on settings for the terminal.
174 static void power_on(Terminal *term)
176 term->curs.x = term->curs.y = 0;
177 term->alt_x = term->alt_y = 0;
178 term->savecurs.x = term->savecurs.y = 0;
179 term->alt_t = term->marg_t = 0;
180 if (term->rows != -1)
181 term->alt_b = term->marg_b = term->rows - 1;
183 term->alt_b = term->marg_b = 0;
184 if (term->cols != -1) {
186 for (i = 0; i < term->cols; i++)
187 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
189 term->alt_om = term->dec_om = term->cfg.dec_om;
190 term->alt_ins = term->insert = FALSE;
191 term->alt_wnext = term->wrapnext = term->save_wnext = FALSE;
192 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
193 term->alt_cset = term->cset = term->save_cset = 0;
194 term->alt_utf = term->utf = term->save_utf = 0;
196 term->alt_sco_acs = term->sco_acs = term->save_sco_acs = 0;
197 term->cset_attr[0] = term->cset_attr[1] = term->save_csattr = ATTR_ASCII;
199 term->in_vbell = FALSE;
201 term->big_cursor = 0;
202 term->save_attr = term->curr_attr = ATTR_DEFAULT;
203 term->term_editing = term->term_echoing = FALSE;
204 term->app_cursor_keys = term->cfg.app_cursor;
205 term->app_keypad_keys = term->cfg.app_keypad;
206 term->use_bce = term->cfg.bce;
207 term->blink_is_real = term->cfg.blinktext;
208 term->erase_char = ERASE_CHAR;
210 term_print_finish(term);
213 for (i = 0; i < 256; i++)
214 term->wordness[i] = term->cfg.wordness[i];
217 swap_screen(term, 1, FALSE, FALSE);
218 erase_lots(term, FALSE, TRUE, TRUE);
219 swap_screen(term, 0, FALSE, FALSE);
220 erase_lots(term, FALSE, TRUE, TRUE);
225 * Force a screen update.
227 void term_update(Terminal *term)
230 ctx = get_ctx(term->frontend);
232 int need_sbar_update = term->seen_disp_event;
233 if (term->seen_disp_event && term->cfg.scroll_on_disp) {
234 term->disptop = 0; /* return to main screen */
235 term->seen_disp_event = 0;
236 need_sbar_update = TRUE;
238 if (need_sbar_update)
240 do_paint(term, ctx, TRUE);
241 sys_cursor(term->frontend, term->curs.x, term->curs.y - term->disptop);
247 * Called from front end when a keypress occurs, to trigger
248 * anything magical that needs to happen in that situation.
250 void term_seen_key_event(Terminal *term)
253 * On any keypress, clear the bell overload mechanism
254 * completely, on the grounds that large numbers of
255 * beeps coming from deliberate key action are likely
256 * to be intended (e.g. beeps from filename completion
257 * blocking repeatedly).
259 term->beep_overloaded = FALSE;
260 while (term->beephead) {
261 struct beeptime *tmp = term->beephead;
262 term->beephead = tmp->next;
265 term->beeptail = NULL;
269 * Reset the scrollback on keypress, if we're doing that.
271 if (term->cfg.scroll_on_key) {
272 term->disptop = 0; /* return to main screen */
273 term->seen_disp_event = 1;
278 * Same as power_on(), but an external function.
280 void term_pwron(Terminal *term)
283 if (term->ldisc) /* cause ldisc to notice changes */
284 ldisc_send(term->ldisc, NULL, 0, 0);
292 * When the user reconfigures us, we need to check the forbidden-
293 * alternate-screen config option, disable raw mouse mode if the
294 * user has disabled mouse reporting, and abandon a print job if
295 * the user has disabled printing.
297 void term_reconfig(Terminal *term, Config *cfg)
300 * Before adopting the new config, check all those terminal
301 * settings which control power-on defaults; and if they've
302 * changed, we will modify the current state as well as the
303 * default one. The full list is: Auto wrap mode, DEC Origin
304 * Mode, BCE, blinking text, character classes.
306 int reset_wrap, reset_decom, reset_bce, reset_blink, reset_charclass;
309 reset_wrap = (term->cfg.wrap_mode != cfg->wrap_mode);
310 reset_decom = (term->cfg.dec_om != cfg->dec_om);
311 reset_bce = (term->cfg.bce != cfg->bce);
312 reset_blink = (term->cfg.blinktext != cfg->blinktext);
314 for (i = 0; i < lenof(term->cfg.wordness); i++)
315 if (term->cfg.wordness[i] != cfg->wordness[i])
318 term->cfg = *cfg; /* STRUCTURE COPY */
321 term->alt_wrap = term->wrap = term->cfg.wrap_mode;
323 term->alt_om = term->dec_om = term->cfg.dec_om;
325 term->use_bce = term->cfg.bce;
327 term->blink_is_real = term->cfg.blinktext;
329 for (i = 0; i < 256; i++)
330 term->wordness[i] = term->cfg.wordness[i];
332 if (term->cfg.no_alt_screen)
333 swap_screen(term, 0, FALSE, FALSE);
334 if (term->cfg.no_mouse_rep) {
335 term->xterm_mouse = 0;
336 set_raw_mouse_mode(term->frontend, 0);
338 if (term->cfg.no_remote_charset) {
339 term->cset_attr[0] = term->cset_attr[1] = ATTR_ASCII;
340 term->sco_acs = term->alt_sco_acs = 0;
343 if (!*term->cfg.printer) {
344 term_print_finish(term);
349 * Clear the scrollback.
351 void term_clrsb(Terminal *term)
355 while ((line = delpos234(term->scrollback, 0)) != NULL) {
358 term->tempsblines = 0;
359 term->alt_sblines = 0;
364 * Initialise the terminal.
366 Terminal *term_init(Config *mycfg, struct unicode_data *ucsdata,
372 * Allocate a new Terminal structure and initialise the fields
375 term = snew(Terminal);
376 term->frontend = frontend;
377 term->ucsdata = ucsdata;
378 term->cfg = *mycfg; /* STRUCTURE COPY */
380 term->compatibility_level = TM_PUTTY;
381 strcpy(term->id_string, "\033[?6c");
382 term->last_blink = term->last_tblink = 0;
383 term->paste_buffer = NULL;
385 term->last_paste = 0;
386 bufchain_init(&term->inbuf);
387 bufchain_init(&term->printer_buf);
388 term->printing = term->only_printing = FALSE;
389 term->print_job = NULL;
390 term->vt52_mode = FALSE;
391 term->cr_lf_return = FALSE;
392 term->seen_disp_event = FALSE;
393 term->xterm_mouse = term->mouse_is_down = FALSE;
394 term->reset_132 = FALSE;
395 term->blinker = term->tblinker = 0;
397 term->repeat_off = FALSE;
398 term->termstate = TOPLEVEL;
399 term->selstate = NO_SELECTION;
402 term->screen = term->alt_screen = term->scrollback = NULL;
403 term->tempsblines = 0;
404 term->alt_sblines = 0;
406 term->disptext = term->dispcurs = NULL;
409 term->rows = term->cols = -1;
411 term->beephead = term->beeptail = NULL;
412 #ifdef OPTIMISE_SCROLL
413 term->scrollhead = term->scrolltail = NULL;
414 #endif /* OPTIMISE_SCROLL */
416 term->lastbeep = FALSE;
417 term->beep_overloaded = FALSE;
418 term->attr_mask = 0xffffffff;
419 term->resize_fn = NULL;
420 term->resize_ctx = NULL;
421 term->in_term_out = FALSE;
426 void term_free(Terminal *term)
429 struct beeptime *beep;
431 while ((line = delpos234(term->scrollback, 0)) != NULL)
433 freetree234(term->scrollback);
434 while ((line = delpos234(term->screen, 0)) != NULL)
436 freetree234(term->screen);
437 while ((line = delpos234(term->alt_screen, 0)) != NULL)
439 freetree234(term->alt_screen);
440 sfree(term->disptext);
441 while (term->beephead) {
442 beep = term->beephead;
443 term->beephead = beep->next;
446 bufchain_clear(&term->inbuf);
448 printer_finish_job(term->print_job);
449 bufchain_clear(&term->printer_buf);
450 sfree(term->paste_buffer);
455 * Set up the terminal for a given size.
457 void term_size(Terminal *term, int newrows, int newcols, int newsavelines)
460 unsigned long *newdisp, *line;
463 int save_alt_which = term->alt_which;
465 if (newrows == term->rows && newcols == term->cols &&
466 newsavelines == term->savelines)
467 return; /* nothing to do */
470 swap_screen(term, 0, FALSE, FALSE);
472 term->alt_t = term->marg_t = 0;
473 term->alt_b = term->marg_b = newrows - 1;
475 if (term->rows == -1) {
476 term->scrollback = newtree234(NULL);
477 term->screen = newtree234(NULL);
478 term->tempsblines = 0;
483 * Resize the screen and scrollback. We only need to shift
484 * lines around within our data structures, because lineptr()
485 * will take care of resizing each individual line if
488 * - If the new screen is longer, we shunt lines in from temporary
489 * scrollback if possible, otherwise we add new blank lines at
492 * - If the new screen is shorter, we remove any blank lines at
493 * the bottom if possible, otherwise shunt lines above the cursor
494 * to scrollback if possible, otherwise delete lines below the
497 * - Then, if the new scrollback length is less than the
498 * amount of scrollback we actually have, we must throw some
501 sblen = count234(term->scrollback);
502 /* Do this loop to expand the screen if newrows > rows */
503 assert(term->rows == count234(term->screen));
504 while (term->rows < newrows) {
505 if (term->tempsblines > 0) {
506 /* Insert a line from the scrollback at the top of the screen. */
507 assert(sblen >= term->tempsblines);
508 line = delpos234(term->scrollback, --sblen);
509 term->tempsblines -= 1;
510 addpos234(term->screen, line, 0);
512 term->savecurs.y += 1;
514 /* Add a new blank line at the bottom of the screen. */
515 line = snewn(newcols + 2, TTYPE);
517 for (j = 0; j < newcols; j++)
518 line[j + 1] = ERASE_CHAR;
519 line[newcols + 1] = LATTR_NORM;
520 addpos234(term->screen, line, count234(term->screen));
524 /* Do this loop to shrink the screen if newrows < rows */
525 while (term->rows > newrows) {
526 if (term->curs.y < term->rows - 1) {
527 /* delete bottom row, unless it contains the cursor */
528 sfree(delpos234(term->screen, term->rows - 1));
530 /* push top row to scrollback */
531 line = delpos234(term->screen, 0);
532 addpos234(term->scrollback, line, sblen++);
533 term->tempsblines += 1;
535 term->savecurs.y -= 1;
539 assert(term->rows == newrows);
540 assert(count234(term->screen) == newrows);
542 /* Delete any excess lines from the scrollback. */
543 while (sblen > newsavelines) {
544 line = delpos234(term->scrollback, 0);
548 if (sblen < term->tempsblines)
549 term->tempsblines = sblen;
550 assert(count234(term->scrollback) <= newsavelines);
551 assert(count234(term->scrollback) >= term->tempsblines);
554 /* Make a new displayed text buffer. */
555 newdisp = snewn(newrows * (newcols + 1), TTYPE);
556 for (i = 0; i < newrows * (newcols + 1); i++)
557 newdisp[i] = ATTR_INVALID;
558 sfree(term->disptext);
559 term->disptext = newdisp;
560 term->dispcurs = NULL;
562 /* Make a new alternate screen. */
563 newalt = newtree234(NULL);
564 for (i = 0; i < newrows; i++) {
565 line = snewn(newcols + 2, TTYPE);
567 for (j = 0; j < newcols; j++)
568 line[j + 1] = term->erase_char;
569 line[newcols + 1] = LATTR_NORM;
570 addpos234(newalt, line, i);
572 if (term->alt_screen) {
573 while (NULL != (line = delpos234(term->alt_screen, 0)))
575 freetree234(term->alt_screen);
577 term->alt_screen = newalt;
578 term->alt_sblines = 0;
580 term->tabs = sresize(term->tabs, newcols, unsigned char);
583 for (i = (term->cols > 0 ? term->cols : 0); i < newcols; i++)
584 term->tabs[i] = (i % 8 == 0 ? TRUE : FALSE);
587 /* Check that the cursor positions are still valid. */
588 if (term->savecurs.y < 0)
589 term->savecurs.y = 0;
590 if (term->savecurs.y >= newrows)
591 term->savecurs.y = newrows - 1;
592 if (term->curs.y < 0)
594 if (term->curs.y >= newrows)
595 term->curs.y = newrows - 1;
596 if (term->curs.x >= newcols)
597 term->curs.x = newcols - 1;
598 term->alt_x = term->alt_y = 0;
599 term->wrapnext = term->alt_wnext = FALSE;
601 term->rows = newrows;
602 term->cols = newcols;
603 term->savelines = newsavelines;
606 swap_screen(term, save_alt_which, FALSE, FALSE);
611 term->resize_fn(term->resize_ctx, term->cols, term->rows);
615 * Hand a function and context pointer to the terminal which it can
616 * use to notify a back end of resizes.
618 void term_provide_resize_fn(Terminal *term,
619 void (*resize_fn)(void *, int, int),
622 term->resize_fn = resize_fn;
623 term->resize_ctx = resize_ctx;
624 if (term->cols > 0 && term->rows > 0)
625 resize_fn(resize_ctx, term->cols, term->rows);
628 /* Find the bottom line on the screen that has any content.
629 * If only the top line has content, returns 0.
630 * If no lines have content, return -1.
632 static int find_last_nonempty_line(Terminal * term, tree234 * screen)
635 for (i = count234(screen) - 1; i >= 0; i--) {
636 unsigned long *line = index234(screen, i);
639 for (j = 0; j < cols; j++) {
640 if (line[j + 1] != term->erase_char) break;
642 if (j != cols) break;
648 * Swap screens. If `reset' is TRUE and we have been asked to
649 * switch to the alternate screen, we must bring most of its
650 * configuration from the main screen and erase the contents of the
651 * alternate screen completely. (This is even true if we're already
652 * on it! Blame xterm.)
654 static void swap_screen(Terminal *term, int which, int reset, int keep_cur_pos)
660 reset = FALSE; /* do no weird resetting if which==0 */
662 if (which != term->alt_which) {
663 term->alt_which = which;
665 ttr = term->alt_screen;
666 term->alt_screen = term->screen;
668 term->alt_sblines = find_last_nonempty_line(term, term->alt_screen) + 1;
670 if (!reset && !keep_cur_pos)
671 term->curs.x = term->alt_x;
674 if (!reset && !keep_cur_pos)
675 term->curs.y = term->alt_y;
678 if (!reset) term->marg_t = term->alt_t;
681 if (!reset) term->marg_b = term->alt_b;
684 if (!reset) term->dec_om = term->alt_om;
687 if (!reset) term->wrap = term->alt_wrap;
690 if (!reset) term->wrapnext = term->alt_wnext;
693 if (!reset) term->insert = term->alt_ins;
696 if (!reset) term->cset = term->alt_cset;
699 if (!reset) term->utf = term->alt_utf;
702 if (!reset) term->sco_acs = term->alt_sco_acs;
703 term->alt_sco_acs = t;
706 if (reset && term->screen) {
708 * Yes, this _is_ supposed to honour background-colour-erase.
710 erase_lots(term, FALSE, TRUE, TRUE);
714 * This might not be possible if we're called during
722 * Update the scroll bar.
724 static void update_sbar(Terminal *term)
726 int nscroll = sblines(term);
727 set_sbar(term->frontend, nscroll + term->rows,
728 nscroll + term->disptop, term->rows);
732 * Check whether the region bounded by the two pointers intersects
733 * the scroll region, and de-select the on-screen selection if so.
735 static void check_selection(Terminal *term, pos from, pos to)
737 if (poslt(from, term->selend) && poslt(term->selstart, to))
742 * Scroll the screen. (`lines' is +ve for scrolling forward, -ve
743 * for backward.) `sb' is TRUE if the scrolling is permitted to
744 * affect the scrollback buffer.
746 * NB this function invalidates all pointers into lines of the
747 * screen data structures. In particular, you MUST call fix_cpos
748 * after calling scroll() and before doing anything else that
749 * uses the cpos shortcut pointer.
751 static void scroll(Terminal *term, int topline, int botline, int lines, int sb)
753 unsigned long *line, *line2;
754 int i, seltop, olddisptop, shift;
756 if (topline != 0 || term->alt_which != 0)
759 olddisptop = term->disptop;
763 line = delpos234(term->screen, botline);
764 line = resizeline(line, term->cols);
765 for (i = 0; i < term->cols; i++)
766 line[i + 1] = term->erase_char;
767 line[term->cols + 1] = 0;
768 addpos234(term->screen, line, topline);
770 if (term->selstart.y >= topline && term->selstart.y <= botline) {
772 if (term->selstart.y > botline) {
773 term->selstart.y = botline + 1;
774 term->selstart.x = 0;
777 if (term->selend.y >= topline && term->selend.y <= botline) {
779 if (term->selend.y > botline) {
780 term->selend.y = botline + 1;
789 line = delpos234(term->screen, topline);
790 if (sb && term->savelines > 0) {
791 int sblen = count234(term->scrollback);
793 * We must add this line to the scrollback. We'll
794 * remove a line from the top of the scrollback to
795 * replace it, or allocate a new one if the
796 * scrollback isn't full.
798 if (sblen == term->savelines) {
799 sblen--, line2 = delpos234(term->scrollback, 0);
801 line2 = snewn(term->cols + 2, TTYPE);
802 line2[0] = term->cols;
803 term->tempsblines += 1;
805 addpos234(term->scrollback, line, sblen);
809 * If the user is currently looking at part of the
810 * scrollback, and they haven't enabled any options
811 * that are going to reset the scrollback as a
812 * result of this movement, then the chances are
813 * they'd like to keep looking at the same line. So
814 * we move their viewpoint at the same rate as the
815 * scroll, at least until their viewpoint hits the
816 * top end of the scrollback buffer, at which point
817 * we don't have the choice any more.
819 * Thanks to Jan Holmen Holsten for the idea and
820 * initial implementation.
822 if (term->disptop > -term->savelines && term->disptop < 0)
825 line = resizeline(line, term->cols);
826 for (i = 0; i < term->cols; i++)
827 line[i + 1] = term->erase_char;
828 line[term->cols + 1] = LATTR_NORM;
829 addpos234(term->screen, line, botline);
832 * If the selection endpoints move into the scrollback,
833 * we keep them moving until they hit the top. However,
834 * of course, if the line _hasn't_ moved into the
835 * scrollback then we don't do this, and cut them off
836 * at the top of the scroll region.
838 * This applies to selstart and selend (for an existing
839 * selection), and also selanchor (for one being
840 * selected as we speak).
842 seltop = sb ? -term->savelines : topline;
844 if (term->selstart.y >= seltop &&
845 term->selstart.y <= botline) {
847 if (term->selstart.y < seltop) {
848 term->selstart.y = seltop;
849 term->selstart.x = 0;
852 if (term->selend.y >= seltop && term->selend.y <= botline) {
854 if (term->selend.y < seltop) {
855 term->selend.y = seltop;
859 if (term->selanchor.y >= seltop && term->selanchor.y <= botline) {
861 if (term->selanchor.y < seltop) {
862 term->selanchor.y = seltop;
863 term->selanchor.x = 0;
870 #ifdef OPTIMISE_SCROLL
871 shift += term->disptop - olddisptop;
872 if (shift < term->rows && shift > -term->rows && shift != 0)
873 scroll_display(term, topline, botline, shift);
874 #endif /* OPTIMISE_SCROLL */
877 #ifdef OPTIMISE_SCROLL
879 * Add a scroll of a region on the screen into the pending scroll list.
880 * `lines' is +ve for scrolling forward, -ve for backward.
882 * If the scroll is on the same area as the last scroll in the list,
885 static void save_scroll(Terminal *term, int topline, int botline, int lines)
887 struct scrollregion *newscroll;
888 if (term->scrolltail &&
889 term->scrolltail->topline == topline &&
890 term->scrolltail->botline == botline) {
891 term->scrolltail->lines += lines;
893 newscroll = snew(struct scrollregion);
894 newscroll->topline = topline;
895 newscroll->botline = botline;
896 newscroll->lines = lines;
897 newscroll->next = NULL;
899 if (!term->scrollhead)
900 term->scrollhead = newscroll;
902 term->scrolltail->next = newscroll;
903 term->scrolltail = newscroll;
908 * Scroll the physical display, and our conception of it in disptext.
910 static void scroll_display(Terminal *term, int topline, int botline, int lines)
912 unsigned long *start, *end;
913 int distance, size, i;
915 start = term->disptext + topline * (term->cols + 1);
916 end = term->disptext + (botline + 1) * (term->cols + 1);
917 distance = (lines > 0 ? lines : -lines) * (term->cols + 1);
918 size = end - start - distance;
920 memmove(start, start + distance, size * TSIZE);
921 if (term->dispcurs >= start + distance &&
922 term->dispcurs <= start + distance + size)
923 term->dispcurs -= distance;
924 for (i = 0; i < distance; i++)
925 (start + size)[i] |= ATTR_INVALID;
927 memmove(start + distance, start, size * TSIZE);
928 if (term->dispcurs >= start && term->dispcurs <= start + size)
929 term->dispcurs += distance;
930 for (i = 0; i < distance; i++)
931 start[i] |= ATTR_INVALID;
933 save_scroll(term, topline, botline, lines);
935 #endif /* OPTIMISE_SCROLL */
938 * Move the cursor to a given position, clipping at boundaries. We
939 * may or may not want to clip at the scroll margin: marg_clip is 0
940 * not to, 1 to disallow _passing_ the margins, and 2 to disallow
941 * even _being_ outside the margins.
943 static void move(Terminal *term, int x, int y, int marg_clip)
950 if ((term->curs.y >= term->marg_t || marg_clip == 2) &&
953 if ((term->curs.y <= term->marg_b || marg_clip == 2) &&
964 term->wrapnext = FALSE;
968 * Save or restore the cursor and SGR mode.
970 static void save_cursor(Terminal *term, int save)
973 term->savecurs = term->curs;
974 term->save_attr = term->curr_attr;
975 term->save_cset = term->cset;
976 term->save_utf = term->utf;
977 term->save_wnext = term->wrapnext;
978 term->save_csattr = term->cset_attr[term->cset];
979 term->save_sco_acs = term->sco_acs;
981 term->curs = term->savecurs;
982 /* Make sure the window hasn't shrunk since the save */
983 if (term->curs.x >= term->cols)
984 term->curs.x = term->cols - 1;
985 if (term->curs.y >= term->rows)
986 term->curs.y = term->rows - 1;
988 term->curr_attr = term->save_attr;
989 term->cset = term->save_cset;
990 term->utf = term->save_utf;
991 term->wrapnext = term->save_wnext;
993 * wrapnext might reset to False if the x position is no
994 * longer at the rightmost edge.
996 if (term->wrapnext && term->curs.x < term->cols-1)
997 term->wrapnext = FALSE;
998 term->cset_attr[term->cset] = term->save_csattr;
999 term->sco_acs = term->save_sco_acs;
1002 term->erase_char = (' ' | ATTR_ASCII |
1004 (ATTR_FGMASK | ATTR_BGMASK)));
1009 * This function is called before doing _anything_ which affects
1010 * only part of a line of text. It is used to mark the boundary
1011 * between two character positions, and it indicates that some sort
1012 * of effect is going to happen on only one side of that boundary.
1014 * The effect of this function is to check whether a CJK
1015 * double-width character is straddling the boundary, and to remove
1016 * it and replace it with two spaces if so. (Of course, one or
1017 * other of those spaces is then likely to be replaced with
1018 * something else again, as a result of whatever happens next.)
1020 * Also, if the boundary is at the right-hand _edge_ of the screen,
1021 * it implies something deliberate is being done to the rightmost
1022 * column position; hence we must clear LATTR_WRAPPED2.
1024 * The input to the function is the coordinates of the _second_
1025 * character of the pair.
1027 static void check_boundary(Terminal *term, int x, int y)
1029 unsigned long *ldata;
1031 /* Validate input coordinates, just in case. */
1032 if (x == 0 || x > term->cols)
1036 if (x == term->cols) {
1037 ldata[x] &= ~LATTR_WRAPPED2;
1039 if ((ldata[x] & (CHAR_MASK | CSET_MASK)) == UCSWIDE) {
1040 ldata[x-1] = ldata[x] =
1041 (ldata[x-1] &~ (CHAR_MASK | CSET_MASK)) | ATTR_ASCII | ' ';
1047 * Erase a large portion of the screen: the whole screen, or the
1048 * whole line, or parts thereof.
1050 static void erase_lots(Terminal *term,
1051 int line_only, int from_begin, int to_end)
1055 int erasing_lines_from_top = 0;
1058 start.y = term->curs.y;
1060 end.y = term->curs.y + 1;
1062 erase_lattr = FALSE;
1077 if (!from_begin || !to_end)
1078 check_boundary(term, term->curs.x, term->curs.y);
1079 check_selection(term, start, end);
1081 /* Clear screen also forces a full window redraw, just in case. */
1082 if (start.y == 0 && start.x == 0 && end.y == term->rows)
1083 term_invalidate(term);
1085 /* Lines scrolled away shouldn't be brought back on if the terminal
1087 if (start.y == 0 && start.x == 0 && end.x == 0 && erase_lattr)
1088 erasing_lines_from_top = 1;
1090 if (term->cfg.erase_to_scrollback && erasing_lines_from_top) {
1091 /* If it's a whole number of lines, starting at the top, and
1092 * we're fully erasing them, erase by scrolling and keep the
1093 * lines in the scrollback. */
1094 int scrolllines = end.y;
1095 if (end.y == term->rows) {
1096 /* Shrink until we find a non-empty row.*/
1097 scrolllines = find_last_nonempty_line(term, term->screen) + 1;
1099 if (scrolllines > 0)
1100 scroll(term, 0, scrolllines - 1, scrolllines, TRUE);
1103 unsigned long *ldata = lineptr(start.y);
1104 while (poslt(start, end)) {
1105 if (start.x == term->cols) {
1107 ldata[start.x] &= ~(LATTR_WRAPPED | LATTR_WRAPPED2);
1109 ldata[start.x] = LATTR_NORM;
1111 ldata[start.x] = term->erase_char;
1113 if (incpos(start) && start.y < term->rows)
1114 ldata = lineptr(start.y);
1118 /* After an erase of lines from the top of the screen, we shouldn't
1119 * bring the lines back again if the terminal enlarges (since the user or
1120 * application has explictly thrown them away). */
1121 if (erasing_lines_from_top && !(term->alt_which))
1122 term->tempsblines = 0;
1126 * Insert or delete characters within the current line. n is +ve if
1127 * insertion is desired, and -ve for deletion.
1129 static void insch(Terminal *term, int n)
1131 int dir = (n < 0 ? -1 : +1);
1134 unsigned long *ldata;
1136 n = (n < 0 ? -n : n);
1137 if (n > term->cols - term->curs.x)
1138 n = term->cols - term->curs.x;
1139 m = term->cols - term->curs.x - n;
1140 cursplus.y = term->curs.y;
1141 cursplus.x = term->curs.x + n;
1142 check_selection(term, term->curs, cursplus);
1143 check_boundary(term, term->curs.x, term->curs.y);
1145 check_boundary(term, term->curs.x + n, term->curs.y);
1146 ldata = lineptr(term->curs.y);
1148 memmove(ldata + term->curs.x, ldata + term->curs.x + n, m * TSIZE);
1150 ldata[term->curs.x + m++] = term->erase_char;
1152 memmove(ldata + term->curs.x + n, ldata + term->curs.x, m * TSIZE);
1154 ldata[term->curs.x + n] = term->erase_char;
1159 * Toggle terminal mode `mode' to state `state'. (`query' indicates
1160 * whether the mode is a DEC private one or a normal one.)
1162 static void toggle_mode(Terminal *term, int mode, int query, int state)
1164 unsigned long ticks;
1168 case 1: /* application cursor keys */
1169 term->app_cursor_keys = state;
1171 case 2: /* VT52 mode */
1172 term->vt52_mode = !state;
1173 if (term->vt52_mode) {
1174 term->blink_is_real = FALSE;
1175 term->vt52_bold = FALSE;
1177 term->blink_is_real = term->cfg.blinktext;
1180 case 3: /* 80/132 columns */
1182 if (!term->cfg.no_remote_resize)
1183 request_resize(term->frontend, state ? 132 : 80, term->rows);
1184 term->reset_132 = state;
1185 term->alt_t = term->marg_t = 0;
1186 term->alt_b = term->marg_b = term->rows - 1;
1187 move(term, 0, 0, 0);
1188 erase_lots(term, FALSE, TRUE, TRUE);
1190 case 5: /* reverse video */
1192 * Toggle reverse video. If we receive an OFF within the
1193 * visual bell timeout period after an ON, we trigger an
1194 * effective visual bell, so that ESC[?5hESC[?5l will
1195 * always be an actually _visible_ visual bell.
1197 ticks = GETTICKCOUNT();
1198 /* turn off a previous vbell to avoid inconsistencies */
1199 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
1200 term->in_vbell = FALSE;
1201 if (term->rvideo && !state && /* we're turning it off... */
1202 (ticks - term->rvbell_startpoint) < VBELL_TIMEOUT) {/*...soon*/
1203 /* If there's no vbell timeout already, or this one lasts
1204 * longer, replace vbell_timeout with ours. */
1205 if (!term->in_vbell ||
1206 (term->rvbell_startpoint - term->vbell_startpoint <
1208 term->vbell_startpoint = term->rvbell_startpoint;
1209 term->in_vbell = TRUE; /* may clear rvideo but set in_vbell */
1210 } else if (!term->rvideo && state) {
1211 /* This is an ON, so we notice the time and save it. */
1212 term->rvbell_startpoint = ticks;
1214 term->rvideo = state;
1215 term->seen_disp_event = TRUE;
1219 case 6: /* DEC origin mode */
1220 term->dec_om = state;
1222 case 7: /* auto wrap */
1225 case 8: /* auto key repeat */
1226 term->repeat_off = !state;
1228 case 10: /* set local edit mode */
1229 term->term_editing = state;
1230 if (term->ldisc) /* cause ldisc to notice changes */
1231 ldisc_send(term->ldisc, NULL, 0, 0);
1233 case 25: /* enable/disable cursor */
1234 compatibility2(OTHER, VT220);
1235 term->cursor_on = state;
1236 term->seen_disp_event = TRUE;
1238 case 47: /* alternate screen */
1239 compatibility(OTHER);
1241 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, FALSE, FALSE);
1244 case 1000: /* xterm mouse 1 */
1245 term->xterm_mouse = state ? 1 : 0;
1246 set_raw_mouse_mode(term->frontend, state);
1248 case 1002: /* xterm mouse 2 */
1249 term->xterm_mouse = state ? 2 : 0;
1250 set_raw_mouse_mode(term->frontend, state);
1252 case 1047: /* alternate screen */
1253 compatibility(OTHER);
1255 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, TRUE);
1258 case 1048: /* save/restore cursor */
1259 save_cursor(term, state);
1260 if (!state) term->seen_disp_event = TRUE;
1262 case 1049: /* cursor & alternate screen */
1264 save_cursor(term, state);
1265 if (!state) term->seen_disp_event = TRUE;
1266 compatibility(OTHER);
1268 swap_screen(term, term->cfg.no_alt_screen ? 0 : state, TRUE, FALSE);
1270 save_cursor(term, state);
1275 case 4: /* set insert mode */
1276 compatibility(VT102);
1277 term->insert = state;
1279 case 12: /* set echo mode */
1280 term->term_echoing = !state;
1281 if (term->ldisc) /* cause ldisc to notice changes */
1282 ldisc_send(term->ldisc, NULL, 0, 0);
1284 case 20: /* Return sends ... */
1285 term->cr_lf_return = state;
1287 case 34: /* Make cursor BIG */
1288 compatibility2(OTHER, VT220);
1289 term->big_cursor = !state;
1294 * Process an OSC sequence: set window title or icon name.
1296 static void do_osc(Terminal *term)
1299 while (term->osc_strlen--)
1300 term->wordness[(unsigned char)
1301 term->osc_string[term->osc_strlen]] = term->esc_args[0];
1303 term->osc_string[term->osc_strlen] = '\0';
1304 switch (term->esc_args[0]) {
1307 if (!term->cfg.no_remote_wintitle)
1308 set_icon(term->frontend, term->osc_string);
1309 if (term->esc_args[0] == 1)
1311 /* fall through: parameter 0 means set both */
1314 if (!term->cfg.no_remote_wintitle)
1315 set_title(term->frontend, term->osc_string);
1322 * ANSI printing routines.
1324 static void term_print_setup(Terminal *term)
1326 bufchain_clear(&term->printer_buf);
1327 term->print_job = printer_start_job(term->cfg.printer);
1329 static void term_print_flush(Terminal *term)
1334 while ((size = bufchain_size(&term->printer_buf)) > 5) {
1335 bufchain_prefix(&term->printer_buf, &data, &len);
1338 printer_job_data(term->print_job, data, len);
1339 bufchain_consume(&term->printer_buf, len);
1342 static void term_print_finish(Terminal *term)
1348 if (!term->printing && !term->only_printing)
1349 return; /* we need do nothing */
1351 term_print_flush(term);
1352 while ((size = bufchain_size(&term->printer_buf)) > 0) {
1353 bufchain_prefix(&term->printer_buf, &data, &len);
1355 if (c == '\033' || c == '\233') {
1356 bufchain_consume(&term->printer_buf, size);
1359 printer_job_data(term->print_job, &c, 1);
1360 bufchain_consume(&term->printer_buf, 1);
1363 printer_finish_job(term->print_job);
1364 term->print_job = NULL;
1365 term->printing = term->only_printing = FALSE;
1369 * Remove everything currently in `inbuf' and stick it up on the
1370 * in-memory display. There's a big state machine in here to
1371 * process escape sequences...
1373 void term_out(Terminal *term)
1376 unsigned char localbuf[256], *chars;
1381 chars = NULL; /* placate compiler warnings */
1382 while (nchars > 0 || bufchain_size(&term->inbuf) > 0) {
1386 bufchain_prefix(&term->inbuf, &ret, &nchars);
1387 if (nchars > sizeof(localbuf))
1388 nchars = sizeof(localbuf);
1389 memcpy(localbuf, ret, nchars);
1390 bufchain_consume(&term->inbuf, nchars);
1392 assert(chars != NULL);
1398 * Optionally log the session traffic to a file. Useful for
1399 * debugging and possibly also useful for actual logging.
1401 if (term->cfg.logtype == LGTYP_DEBUG && term->logctx)
1402 logtraffic(term->logctx, (unsigned char) c, LGTYP_DEBUG);
1408 /* Note only VT220+ are 8-bit VT102 is seven bit, it shouldn't even
1409 * be able to display 8-bit characters, but I'll let that go 'cause
1414 * If we're printing, add the character to the printer
1417 if (term->printing) {
1418 bufchain_add(&term->printer_buf, &c, 1);
1421 * If we're in print-only mode, we use a much simpler
1422 * state machine designed only to recognise the ESC[4i
1423 * termination sequence.
1425 if (term->only_printing) {
1427 term->print_state = 1;
1428 else if (c == (unsigned char)'\233')
1429 term->print_state = 2;
1430 else if (c == '[' && term->print_state == 1)
1431 term->print_state = 2;
1432 else if (c == '4' && term->print_state == 2)
1433 term->print_state = 3;
1434 else if (c == 'i' && term->print_state == 3)
1435 term->print_state = 4;
1437 term->print_state = 0;
1438 if (term->print_state == 4) {
1439 term_print_finish(term);
1445 /* First see about all those translations. */
1446 if (term->termstate == TOPLEVEL) {
1448 switch (term->utf_state) {
1451 /* UTF-8 must be stateless so we ignore iso2022. */
1452 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1453 c = term->ucsdata->unitab_ctrl[c];
1454 else c = ((unsigned char)c) | ATTR_ASCII;
1456 } else if ((c & 0xe0) == 0xc0) {
1457 term->utf_size = term->utf_state = 1;
1458 term->utf_char = (c & 0x1f);
1459 } else if ((c & 0xf0) == 0xe0) {
1460 term->utf_size = term->utf_state = 2;
1461 term->utf_char = (c & 0x0f);
1462 } else if ((c & 0xf8) == 0xf0) {
1463 term->utf_size = term->utf_state = 3;
1464 term->utf_char = (c & 0x07);
1465 } else if ((c & 0xfc) == 0xf8) {
1466 term->utf_size = term->utf_state = 4;
1467 term->utf_char = (c & 0x03);
1468 } else if ((c & 0xfe) == 0xfc) {
1469 term->utf_size = term->utf_state = 5;
1470 term->utf_char = (c & 0x01);
1481 if ((c & 0xC0) != 0x80) {
1484 term->utf_state = 0;
1487 term->utf_char = (term->utf_char << 6) | (c & 0x3f);
1488 if (--term->utf_state)
1493 /* Is somebody trying to be evil! */
1495 (c < 0x800 && term->utf_size >= 2) ||
1496 (c < 0x10000 && term->utf_size >= 3) ||
1497 (c < 0x200000 && term->utf_size >= 4) ||
1498 (c < 0x4000000 && term->utf_size >= 5))
1501 /* Unicode line separator and paragraph separator are CR-LF */
1502 if (c == 0x2028 || c == 0x2029)
1505 /* High controls are probably a Baaad idea too. */
1509 /* The UTF-16 surrogates are not nice either. */
1510 /* The standard give the option of decoding these:
1511 * I don't want to! */
1512 if (c >= 0xD800 && c < 0xE000)
1515 /* ISO 10646 characters now limited to UTF-16 range. */
1519 /* This is currently a TagPhobic application.. */
1520 if (c >= 0xE0000 && c <= 0xE007F)
1523 /* U+FEFF is best seen as a null. */
1526 /* But U+FFFE is an error. */
1527 if (c == 0xFFFE || c == 0xFFFF)
1530 /* Oops this is a 16bit implementation */
1535 /* Are we in the nasty ACS mode? Note: no sco in utf mode. */
1536 else if(term->sco_acs &&
1537 (c!='\033' && c!='\012' && c!='\015' && c!='\b'))
1539 if (term->sco_acs == 2) c |= 0x80;
1542 switch (term->cset_attr[term->cset]) {
1544 * Linedraw characters are different from 'ESC ( B'
1545 * only for a small range. For ones outside that
1546 * range, make sure we use the same font as well as
1547 * the same encoding.
1550 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1551 c = term->ucsdata->unitab_ctrl[c];
1553 c = ((unsigned char) c) | ATTR_LINEDRW;
1557 /* If UK-ASCII, make the '#' a LineDraw Pound */
1559 c = '}' | ATTR_LINEDRW;
1562 /*FALLTHROUGH*/ case ATTR_ASCII:
1563 if (term->ucsdata->unitab_ctrl[c] != 0xFF)
1564 c = term->ucsdata->unitab_ctrl[c];
1566 c = ((unsigned char) c) | ATTR_ASCII;
1569 if (c>=' ') c = ((unsigned char)c) | ATTR_SCOACS;
1575 /* How about C1 controls ? */
1576 if ((c & -32) == 0x80 && term->termstate < DO_CTRLS &&
1577 !term->vt52_mode && has_compat(VT220)) {
1578 term->termstate = SEEN_ESC;
1579 term->esc_query = FALSE;
1580 c = '@' + (c & 0x1F);
1583 /* Or the GL control. */
1584 if (c == '\177' && term->termstate < DO_CTRLS && has_compat(OTHER)) {
1585 if (term->curs.x && !term->wrapnext)
1587 term->wrapnext = FALSE;
1589 if (!term->cfg.no_dbackspace) /* destructive bksp might be disabled */
1590 *term->cpos = (' ' | term->curr_attr | ATTR_ASCII);
1592 /* Or normal C0 controls. */
1593 if ((c & -32) == 0 && term->termstate < DO_CTRLS) {
1595 case '\005': /* terminal type query */
1596 /* Strictly speaking this is VT100 but a VT100 defaults to
1597 * no response. Other terminals respond at their option.
1599 * Don't put a CR in the default string as this tends to
1600 * upset some weird software.
1602 * An xterm returns "xterm" (5 characters)
1604 compatibility(ANSIMIN);
1606 char abuf[256], *s, *d;
1608 for (s = term->cfg.answerback, d = abuf; *s; s++) {
1610 if (*s >= 'a' && *s <= 'z')
1611 *d++ = (*s - ('a' - 1));
1612 else if ((*s >= '@' && *s <= '_') ||
1613 *s == '?' || (*s & 0x80))
1618 } else if (*s == '^') {
1623 lpage_send(term->ldisc, DEFAULT_CODEPAGE,
1629 struct beeptime *newbeep;
1630 unsigned long ticks;
1632 ticks = GETTICKCOUNT();
1634 if (!term->beep_overloaded) {
1635 newbeep = snew(struct beeptime);
1636 newbeep->ticks = ticks;
1637 newbeep->next = NULL;
1638 if (!term->beephead)
1639 term->beephead = newbeep;
1641 term->beeptail->next = newbeep;
1642 term->beeptail = newbeep;
1647 * Throw out any beeps that happened more than
1650 while (term->beephead &&
1651 term->beephead->ticks < ticks - term->cfg.bellovl_t) {
1652 struct beeptime *tmp = term->beephead;
1653 term->beephead = tmp->next;
1655 if (!term->beephead)
1656 term->beeptail = NULL;
1660 if (term->cfg.bellovl && term->beep_overloaded &&
1661 ticks - term->lastbeep >= (unsigned)term->cfg.bellovl_s) {
1663 * If we're currently overloaded and the
1664 * last beep was more than s seconds ago,
1665 * leave overload mode.
1667 term->beep_overloaded = FALSE;
1668 } else if (term->cfg.bellovl && !term->beep_overloaded &&
1669 term->nbeeps >= term->cfg.bellovl_n) {
1671 * Now, if we have n or more beeps
1672 * remaining in the queue, go into overload
1675 term->beep_overloaded = TRUE;
1677 term->lastbeep = ticks;
1680 * Perform an actual beep if we're not overloaded.
1682 if (!term->cfg.bellovl || !term->beep_overloaded) {
1683 beep(term->frontend, term->cfg.beep);
1684 if (term->cfg.beep == BELL_VISUAL) {
1685 term->in_vbell = TRUE;
1686 term->vbell_startpoint = ticks;
1694 if (term->curs.x == 0 &&
1695 (term->curs.y == 0 || term->wrap == 0))
1697 else if (term->curs.x == 0 && term->curs.y > 0)
1698 term->curs.x = term->cols - 1, term->curs.y--;
1699 else if (term->wrapnext)
1700 term->wrapnext = FALSE;
1704 term->seen_disp_event = TRUE;
1707 compatibility(VT100);
1711 compatibility(VT100);
1715 if (term->vt52_mode)
1716 term->termstate = VT52_ESC;
1718 compatibility(ANSIMIN);
1719 term->termstate = SEEN_ESC;
1720 term->esc_query = FALSE;
1725 term->wrapnext = FALSE;
1727 term->seen_disp_event = TRUE;
1728 term->paste_hold = 0;
1730 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1733 if (has_compat(SCOANSI)) {
1734 move(term, 0, 0, 0);
1735 erase_lots(term, FALSE, FALSE, TRUE);
1737 term->wrapnext = FALSE;
1738 term->seen_disp_event = 1;
1742 compatibility(VT100);
1744 if (term->curs.y == term->marg_b)
1745 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1746 else if (term->curs.y < term->rows - 1)
1748 if (term->cfg.lfhascr)
1751 term->wrapnext = FALSE;
1752 term->seen_disp_event = 1;
1753 term->paste_hold = 0;
1755 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1759 pos old_curs = term->curs;
1760 unsigned long *ldata = lineptr(term->curs.y);
1764 } while (term->curs.x < term->cols - 1 &&
1765 !term->tabs[term->curs.x]);
1767 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM) {
1768 if (term->curs.x >= term->cols / 2)
1769 term->curs.x = term->cols / 2 - 1;
1771 if (term->curs.x >= term->cols)
1772 term->curs.x = term->cols - 1;
1776 check_selection(term, old_curs, term->curs);
1778 term->seen_disp_event = TRUE;
1782 switch (term->termstate) {
1784 /* Only graphic characters get this far;
1785 * ctrls are stripped above */
1786 if (term->wrapnext && term->wrap) {
1787 term->cpos[1] |= LATTR_WRAPPED;
1788 if (term->curs.y == term->marg_b)
1789 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1790 else if (term->curs.y < term->rows - 1)
1794 term->wrapnext = FALSE;
1798 if (term->selstate != NO_SELECTION) {
1799 pos cursplus = term->curs;
1801 check_selection(term, term->curs, cursplus);
1803 if (((c & CSET_MASK) == ATTR_ASCII || (c & CSET_MASK) == 0) &&
1805 logtraffic(term->logctx, (unsigned char) c, LGTYP_ASCII);
1811 width = wcwidth((wchar_t) c);
1815 * If we're about to display a double-width
1816 * character starting in the rightmost
1817 * column, then we do something special
1818 * instead. We must print a space in the
1819 * last column of the screen, then wrap;
1820 * and we also set LATTR_WRAPPED2 which
1821 * instructs subsequent cut-and-pasting not
1822 * only to splice this line to the one
1823 * after it, but to ignore the space in the
1824 * last character position as well.
1825 * (Because what was actually output to the
1826 * terminal was presumably just a sequence
1827 * of CJK characters, and we don't want a
1828 * space to be pasted in the middle of
1829 * those just because they had the
1830 * misfortune to start in the wrong parity
1831 * column. xterm concurs.)
1833 check_boundary(term, term->curs.x, term->curs.y);
1834 check_boundary(term, term->curs.x+2, term->curs.y);
1835 if (term->curs.x == term->cols-1) {
1836 *term->cpos++ = ATTR_ASCII | ' ' | term->curr_attr;
1837 *term->cpos |= LATTR_WRAPPED | LATTR_WRAPPED2;
1838 if (term->curs.y == term->marg_b)
1839 scroll(term, term->marg_t, term->marg_b,
1841 else if (term->curs.y < term->rows - 1)
1845 /* Now we must check_boundary again, of course. */
1846 check_boundary(term, term->curs.x, term->curs.y);
1847 check_boundary(term, term->curs.x+2, term->curs.y);
1849 *term->cpos++ = c | term->curr_attr;
1850 *term->cpos++ = UCSWIDE | term->curr_attr;
1854 check_boundary(term, term->curs.x, term->curs.y);
1855 check_boundary(term, term->curs.x+1, term->curs.y);
1856 *term->cpos++ = c | term->curr_attr;
1863 if (term->curs.x == term->cols) {
1866 term->wrapnext = TRUE;
1867 if (term->wrap && term->vt52_mode) {
1868 term->cpos[1] |= LATTR_WRAPPED;
1869 if (term->curs.y == term->marg_b)
1870 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1871 else if (term->curs.y < term->rows - 1)
1875 term->wrapnext = FALSE;
1878 term->seen_disp_event = 1;
1883 * This state is virtually identical to SEEN_ESC, with the
1884 * exception that we have an OSC sequence in the pipeline,
1885 * and _if_ we see a backslash, we process it.
1889 term->termstate = TOPLEVEL;
1892 /* else fall through */
1894 if (c >= ' ' && c <= '/') {
1895 if (term->esc_query)
1896 term->esc_query = -1;
1898 term->esc_query = c;
1901 term->termstate = TOPLEVEL;
1902 switch (ANSI(c, term->esc_query)) {
1903 case '[': /* enter CSI mode */
1904 term->termstate = SEEN_CSI;
1905 term->esc_nargs = 1;
1906 term->esc_args[0] = ARG_DEFAULT;
1907 term->esc_query = FALSE;
1909 case ']': /* xterm escape sequences */
1910 /* Compatibility is nasty here, xterm, linux, decterm yuk! */
1911 compatibility(OTHER);
1912 term->termstate = SEEN_OSC;
1913 term->esc_args[0] = 0;
1915 case '7': /* save cursor */
1916 compatibility(VT100);
1917 save_cursor(term, TRUE);
1919 case '8': /* restore cursor */
1920 compatibility(VT100);
1921 save_cursor(term, FALSE);
1922 term->seen_disp_event = TRUE;
1925 compatibility(VT100);
1926 term->app_keypad_keys = TRUE;
1929 compatibility(VT100);
1930 term->app_keypad_keys = FALSE;
1932 case 'D': /* exactly equivalent to LF */
1933 compatibility(VT100);
1934 if (term->curs.y == term->marg_b)
1935 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1936 else if (term->curs.y < term->rows - 1)
1939 term->wrapnext = FALSE;
1940 term->seen_disp_event = TRUE;
1942 case 'E': /* exactly equivalent to CR-LF */
1943 compatibility(VT100);
1945 if (term->curs.y == term->marg_b)
1946 scroll(term, term->marg_t, term->marg_b, 1, TRUE);
1947 else if (term->curs.y < term->rows - 1)
1950 term->wrapnext = FALSE;
1951 term->seen_disp_event = TRUE;
1953 case 'M': /* reverse index - backwards LF */
1954 compatibility(VT100);
1955 if (term->curs.y == term->marg_t)
1956 scroll(term, term->marg_t, term->marg_b, -1, TRUE);
1957 else if (term->curs.y > 0)
1960 term->wrapnext = FALSE;
1961 term->seen_disp_event = TRUE;
1963 case 'Z': /* terminal type query */
1964 compatibility(VT100);
1966 ldisc_send(term->ldisc, term->id_string,
1967 strlen(term->id_string), 0);
1969 case 'c': /* restore power-on settings */
1970 compatibility(VT100);
1972 if (term->ldisc) /* cause ldisc to notice changes */
1973 ldisc_send(term->ldisc, NULL, 0, 0);
1974 if (term->reset_132) {
1975 if (!term->cfg.no_remote_resize)
1976 request_resize(term->frontend, 80, term->rows);
1977 term->reset_132 = 0;
1981 term->seen_disp_event = TRUE;
1983 case 'H': /* set a tab */
1984 compatibility(VT100);
1985 term->tabs[term->curs.x] = TRUE;
1988 case ANSI('8', '#'): /* ESC # 8 fills screen with Es :-) */
1989 compatibility(VT100);
1991 unsigned long *ldata;
1995 for (i = 0; i < term->rows; i++) {
1997 for (j = 0; j < term->cols; j++)
1998 ldata[j] = ATTR_DEFAULT | 'E';
1999 ldata[term->cols] = 0;
2002 term->seen_disp_event = TRUE;
2003 scrtop.x = scrtop.y = 0;
2005 scrbot.y = term->rows;
2006 check_selection(term, scrtop, scrbot);
2010 case ANSI('3', '#'):
2011 case ANSI('4', '#'):
2012 case ANSI('5', '#'):
2013 case ANSI('6', '#'):
2014 compatibility(VT100);
2016 unsigned long nlattr;
2017 unsigned long *ldata;
2018 switch (ANSI(c, term->esc_query)) {
2019 case ANSI('3', '#'):
2022 case ANSI('4', '#'):
2025 case ANSI('5', '#'):
2026 nlattr = LATTR_NORM;
2028 default: /* spiritually case ANSI('6', '#'): */
2029 nlattr = LATTR_WIDE;
2032 ldata = lineptr(term->curs.y);
2033 ldata[term->cols] &= ~LATTR_MODE;
2034 ldata[term->cols] |= nlattr;
2038 case ANSI('A', '('):
2039 compatibility(VT100);
2040 if (!term->cfg.no_remote_charset)
2041 term->cset_attr[0] = ATTR_GBCHR;
2043 case ANSI('B', '('):
2044 compatibility(VT100);
2045 if (!term->cfg.no_remote_charset)
2046 term->cset_attr[0] = ATTR_ASCII;
2048 case ANSI('0', '('):
2049 compatibility(VT100);
2050 if (!term->cfg.no_remote_charset)
2051 term->cset_attr[0] = ATTR_LINEDRW;
2053 case ANSI('U', '('):
2054 compatibility(OTHER);
2055 if (!term->cfg.no_remote_charset)
2056 term->cset_attr[0] = ATTR_SCOACS;
2059 case ANSI('A', ')'):
2060 compatibility(VT100);
2061 if (!term->cfg.no_remote_charset)
2062 term->cset_attr[1] = ATTR_GBCHR;
2064 case ANSI('B', ')'):
2065 compatibility(VT100);
2066 if (!term->cfg.no_remote_charset)
2067 term->cset_attr[1] = ATTR_ASCII;
2069 case ANSI('0', ')'):
2070 compatibility(VT100);
2071 if (!term->cfg.no_remote_charset)
2072 term->cset_attr[1] = ATTR_LINEDRW;
2074 case ANSI('U', ')'):
2075 compatibility(OTHER);
2076 if (!term->cfg.no_remote_charset)
2077 term->cset_attr[1] = ATTR_SCOACS;
2080 case ANSI('8', '%'): /* Old Linux code */
2081 case ANSI('G', '%'):
2082 compatibility(OTHER);
2083 if (!term->cfg.no_remote_charset)
2086 case ANSI('@', '%'):
2087 compatibility(OTHER);
2088 if (!term->cfg.no_remote_charset)
2094 term->termstate = TOPLEVEL; /* default */
2096 if (term->esc_nargs <= ARGS_MAX) {
2097 if (term->esc_args[term->esc_nargs - 1] == ARG_DEFAULT)
2098 term->esc_args[term->esc_nargs - 1] = 0;
2099 term->esc_args[term->esc_nargs - 1] =
2100 10 * term->esc_args[term->esc_nargs - 1] + c - '0';
2102 term->termstate = SEEN_CSI;
2103 } else if (c == ';') {
2104 if (++term->esc_nargs <= ARGS_MAX)
2105 term->esc_args[term->esc_nargs - 1] = ARG_DEFAULT;
2106 term->termstate = SEEN_CSI;
2107 } else if (c < '@') {
2108 if (term->esc_query)
2109 term->esc_query = -1;
2111 term->esc_query = TRUE;
2113 term->esc_query = c;
2114 term->termstate = SEEN_CSI;
2116 switch (ANSI(c, term->esc_query)) {
2117 case 'A': /* move up N lines */
2118 move(term, term->curs.x,
2119 term->curs.y - def(term->esc_args[0], 1), 1);
2120 term->seen_disp_event = TRUE;
2122 case 'e': /* move down N lines */
2123 compatibility(ANSI);
2126 move(term, term->curs.x,
2127 term->curs.y + def(term->esc_args[0], 1), 1);
2128 term->seen_disp_event = TRUE;
2130 case ANSI('c', '>'): /* report xterm version */
2131 compatibility(OTHER);
2132 /* this reports xterm version 136 so that VIM can
2133 use the drag messages from the mouse reporting */
2135 ldisc_send(term->ldisc, "\033[>0;136;0c", 11, 0);
2137 case 'a': /* move right N cols */
2138 compatibility(ANSI);
2141 move(term, term->curs.x + def(term->esc_args[0], 1),
2143 term->seen_disp_event = TRUE;
2145 case 'D': /* move left N cols */
2146 move(term, term->curs.x - def(term->esc_args[0], 1),
2148 term->seen_disp_event = TRUE;
2150 case 'E': /* move down N lines and CR */
2151 compatibility(ANSI);
2153 term->curs.y + def(term->esc_args[0], 1), 1);
2154 term->seen_disp_event = TRUE;
2156 case 'F': /* move up N lines and CR */
2157 compatibility(ANSI);
2159 term->curs.y - def(term->esc_args[0], 1), 1);
2160 term->seen_disp_event = TRUE;
2163 case '`': /* set horizontal posn */
2164 compatibility(ANSI);
2165 move(term, def(term->esc_args[0], 1) - 1,
2167 term->seen_disp_event = TRUE;
2169 case 'd': /* set vertical posn */
2170 compatibility(ANSI);
2171 move(term, term->curs.x,
2172 ((term->dec_om ? term->marg_t : 0) +
2173 def(term->esc_args[0], 1) - 1),
2174 (term->dec_om ? 2 : 0));
2175 term->seen_disp_event = TRUE;
2178 case 'f': /* set horz and vert posns at once */
2179 if (term->esc_nargs < 2)
2180 term->esc_args[1] = ARG_DEFAULT;
2181 move(term, def(term->esc_args[1], 1) - 1,
2182 ((term->dec_om ? term->marg_t : 0) +
2183 def(term->esc_args[0], 1) - 1),
2184 (term->dec_om ? 2 : 0));
2185 term->seen_disp_event = TRUE;
2187 case 'J': /* erase screen or parts of it */
2189 unsigned int i = def(term->esc_args[0], 0) + 1;
2192 erase_lots(term, FALSE, !!(i & 2), !!(i & 1));
2195 term->seen_disp_event = TRUE;
2197 case 'K': /* erase line or parts of it */
2199 unsigned int i = def(term->esc_args[0], 0) + 1;
2202 erase_lots(term, TRUE, !!(i & 2), !!(i & 1));
2204 term->seen_disp_event = TRUE;
2206 case 'L': /* insert lines */
2207 compatibility(VT102);
2208 if (term->curs.y <= term->marg_b)
2209 scroll(term, term->curs.y, term->marg_b,
2210 -def(term->esc_args[0], 1), FALSE);
2212 term->seen_disp_event = TRUE;
2214 case 'M': /* delete lines */
2215 compatibility(VT102);
2216 if (term->curs.y <= term->marg_b)
2217 scroll(term, term->curs.y, term->marg_b,
2218 def(term->esc_args[0], 1),
2221 term->seen_disp_event = TRUE;
2223 case '@': /* insert chars */
2224 /* XXX VTTEST says this is vt220, vt510 manual says vt102 */
2225 compatibility(VT102);
2226 insch(term, def(term->esc_args[0], 1));
2227 term->seen_disp_event = TRUE;
2229 case 'P': /* delete chars */
2230 compatibility(VT102);
2231 insch(term, -def(term->esc_args[0], 1));
2232 term->seen_disp_event = TRUE;
2234 case 'c': /* terminal type query */
2235 compatibility(VT100);
2236 /* This is the response for a VT102 */
2238 ldisc_send(term->ldisc, term->id_string,
2239 strlen(term->id_string), 0);
2241 case 'n': /* cursor position query */
2243 if (term->esc_args[0] == 6) {
2245 sprintf(buf, "\033[%d;%dR", term->curs.y + 1,
2247 ldisc_send(term->ldisc, buf, strlen(buf), 0);
2248 } else if (term->esc_args[0] == 5) {
2249 ldisc_send(term->ldisc, "\033[0n", 4, 0);
2253 case 'h': /* toggle modes to high */
2255 compatibility(VT100);
2258 for (i = 0; i < term->esc_nargs; i++)
2259 toggle_mode(term, term->esc_args[i],
2260 term->esc_query, TRUE);
2265 compatibility(VT100);
2267 if (term->esc_nargs != 1) break;
2268 if (term->esc_args[0] == 5 && *term->cfg.printer) {
2269 term->printing = TRUE;
2270 term->only_printing = !term->esc_query;
2271 term->print_state = 0;
2272 term_print_setup(term);
2273 } else if (term->esc_args[0] == 4 &&
2275 term_print_finish(term);
2279 case 'l': /* toggle modes to low */
2281 compatibility(VT100);
2284 for (i = 0; i < term->esc_nargs; i++)
2285 toggle_mode(term, term->esc_args[i],
2286 term->esc_query, FALSE);
2289 case 'g': /* clear tabs */
2290 compatibility(VT100);
2291 if (term->esc_nargs == 1) {
2292 if (term->esc_args[0] == 0) {
2293 term->tabs[term->curs.x] = FALSE;
2294 } else if (term->esc_args[0] == 3) {
2296 for (i = 0; i < term->cols; i++)
2297 term->tabs[i] = FALSE;
2301 case 'r': /* set scroll margins */
2302 compatibility(VT100);
2303 if (term->esc_nargs <= 2) {
2305 top = def(term->esc_args[0], 1) - 1;
2306 bot = (term->esc_nargs <= 1
2307 || term->esc_args[1] == 0 ?
2309 def(term->esc_args[1], term->rows)) - 1;
2310 if (bot >= term->rows)
2311 bot = term->rows - 1;
2312 /* VTTEST Bug 9 - if region is less than 2 lines
2313 * don't change region.
2315 if (bot - top > 0) {
2320 * I used to think the cursor should be
2321 * placed at the top of the newly marginned
2322 * area. Apparently not: VMS TPU falls over
2325 * Well actually it should for
2328 term->curs.y = (term->dec_om ?
2331 term->seen_disp_event = TRUE;
2335 case 'm': /* set graphics rendition */
2338 * A VT100 without the AVO only had one
2339 * attribute, either underline or
2340 * reverse video depending on the
2341 * cursor type, this was selected by
2345 * This is sometimes DIM, eg on the
2348 * This is sometimes INVIS various ANSI.
2350 * This like 22 disables BOLD, DIM and INVIS
2352 * The ANSI colours appear on any
2353 * terminal that has colour (obviously)
2354 * but the interaction between sgr0 and
2355 * the colours varies but is usually
2356 * related to the background colour
2357 * erase item. The interaction between
2358 * colour attributes and the mono ones
2359 * is also very implementation
2362 * The 39 and 49 attributes are likely
2363 * to be unimplemented.
2366 for (i = 0; i < term->esc_nargs; i++) {
2367 switch (def(term->esc_args[i], 0)) {
2368 case 0: /* restore defaults */
2369 term->curr_attr = ATTR_DEFAULT;
2371 case 1: /* enable bold */
2372 compatibility(VT100AVO);
2373 term->curr_attr |= ATTR_BOLD;
2375 case 21: /* (enable double underline) */
2376 compatibility(OTHER);
2377 case 4: /* enable underline */
2378 compatibility(VT100AVO);
2379 term->curr_attr |= ATTR_UNDER;
2381 case 5: /* enable blink */
2382 compatibility(VT100AVO);
2383 term->curr_attr |= ATTR_BLINK;
2385 case 7: /* enable reverse video */
2386 term->curr_attr |= ATTR_REVERSE;
2388 case 10: /* SCO acs off */
2389 compatibility(SCOANSI);
2390 if (term->cfg.no_remote_charset) break;
2391 term->sco_acs = 0; break;
2392 case 11: /* SCO acs on */
2393 compatibility(SCOANSI);
2394 if (term->cfg.no_remote_charset) break;
2395 term->sco_acs = 1; break;
2396 case 12: /* SCO acs on, |0x80 */
2397 compatibility(SCOANSI);
2398 if (term->cfg.no_remote_charset) break;
2399 term->sco_acs = 2; break;
2400 case 22: /* disable bold */
2401 compatibility2(OTHER, VT220);
2402 term->curr_attr &= ~ATTR_BOLD;
2404 case 24: /* disable underline */
2405 compatibility2(OTHER, VT220);
2406 term->curr_attr &= ~ATTR_UNDER;
2408 case 25: /* disable blink */
2409 compatibility2(OTHER, VT220);
2410 term->curr_attr &= ~ATTR_BLINK;
2412 case 27: /* disable reverse video */
2413 compatibility2(OTHER, VT220);
2414 term->curr_attr &= ~ATTR_REVERSE;
2425 term->curr_attr &= ~ATTR_FGMASK;
2427 (term->esc_args[i] - 30)<<ATTR_FGSHIFT;
2437 /* xterm-style bright foreground */
2438 term->curr_attr &= ~ATTR_FGMASK;
2440 ((term->esc_args[i] - 90 + 16)
2443 case 39: /* default-foreground */
2444 term->curr_attr &= ~ATTR_FGMASK;
2445 term->curr_attr |= ATTR_DEFFG;
2456 term->curr_attr &= ~ATTR_BGMASK;
2458 (term->esc_args[i] - 40)<<ATTR_BGSHIFT;
2468 /* xterm-style bright background */
2469 term->curr_attr &= ~ATTR_BGMASK;
2471 ((term->esc_args[i] - 100 + 16)
2474 case 49: /* default-background */
2475 term->curr_attr &= ~ATTR_BGMASK;
2476 term->curr_attr |= ATTR_DEFBG;
2481 term->erase_char = (' ' | ATTR_ASCII |
2487 case 's': /* save cursor */
2488 save_cursor(term, TRUE);
2490 case 'u': /* restore cursor */
2491 save_cursor(term, FALSE);
2492 term->seen_disp_event = TRUE;
2494 case 't': /* set page size - ie window height */
2496 * VT340/VT420 sequence DECSLPP, DEC only allows values
2497 * 24/25/36/48/72/144 other emulators (eg dtterm) use
2498 * illegal values (eg first arg 1..9) for window changing
2501 if (term->esc_nargs <= 1
2502 && (term->esc_args[0] < 1 ||
2503 term->esc_args[0] >= 24)) {
2504 compatibility(VT340TEXT);
2505 if (!term->cfg.no_remote_resize)
2506 request_resize(term->frontend, term->cols,
2507 def(term->esc_args[0], 24));
2509 } else if (term->esc_nargs >= 1 &&
2510 term->esc_args[0] >= 1 &&
2511 term->esc_args[0] < 24) {
2512 compatibility(OTHER);
2514 switch (term->esc_args[0]) {
2518 set_iconic(term->frontend, FALSE);
2521 set_iconic(term->frontend, TRUE);
2524 if (term->esc_nargs >= 3) {
2525 if (!term->cfg.no_remote_resize)
2526 move_window(term->frontend,
2527 def(term->esc_args[1], 0),
2528 def(term->esc_args[2], 0));
2532 /* We should resize the window to a given
2533 * size in pixels here, but currently our
2534 * resizing code isn't healthy enough to
2539 set_zorder(term->frontend, TRUE);
2542 /* move to bottom */
2543 set_zorder(term->frontend, FALSE);
2546 refresh_window(term->frontend);
2549 if (term->esc_nargs >= 3) {
2550 if (!term->cfg.no_remote_resize)
2551 request_resize(term->frontend,
2552 def(term->esc_args[2], term->cfg.width),
2553 def(term->esc_args[1], term->cfg.height));
2557 if (term->esc_nargs >= 2)
2558 set_zoomed(term->frontend,
2564 ldisc_send(term->ldisc,
2565 is_iconic(term->frontend) ?
2566 "\033[1t" : "\033[2t", 4, 0);
2570 get_window_pos(term->frontend, &x, &y);
2571 len = sprintf(buf, "\033[3;%d;%dt", x, y);
2572 ldisc_send(term->ldisc, buf, len, 0);
2577 get_window_pixels(term->frontend, &x, &y);
2578 len = sprintf(buf, "\033[4;%d;%dt", x, y);
2579 ldisc_send(term->ldisc, buf, len, 0);
2584 len = sprintf(buf, "\033[8;%d;%dt",
2585 term->rows, term->cols);
2586 ldisc_send(term->ldisc, buf, len, 0);
2591 * Hmmm. Strictly speaking we
2592 * should return `the size of the
2593 * screen in characters', but
2594 * that's not easy: (a) window
2595 * furniture being what it is it's
2596 * hard to compute, and (b) in
2597 * resize-font mode maximising the
2598 * window wouldn't change the
2599 * number of characters. *shrug*. I
2600 * think we'll ignore it for the
2601 * moment and see if anyone
2602 * complains, and then ask them
2603 * what they would like it to do.
2608 p = get_window_title(term->frontend, TRUE);
2610 ldisc_send(term->ldisc, "\033]L", 3, 0);
2611 ldisc_send(term->ldisc, p, len, 0);
2612 ldisc_send(term->ldisc, "\033\\", 2, 0);
2617 p = get_window_title(term->frontend,FALSE);
2619 ldisc_send(term->ldisc, "\033]l", 3, 0);
2620 ldisc_send(term->ldisc, p, len, 0);
2621 ldisc_send(term->ldisc, "\033\\", 2, 0);
2628 compatibility(SCOANSI);
2629 scroll(term, term->marg_t, term->marg_b,
2630 def(term->esc_args[0], 1), TRUE);
2632 term->wrapnext = FALSE;
2633 term->seen_disp_event = TRUE;
2636 compatibility(SCOANSI);
2637 scroll(term, term->marg_t, term->marg_b,
2638 -def(term->esc_args[0], 1), TRUE);
2640 term->wrapnext = FALSE;
2641 term->seen_disp_event = TRUE;
2643 case ANSI('|', '*'):
2644 /* VT420 sequence DECSNLS
2645 * Set number of lines on screen
2646 * VT420 uses VGA like hardware and can support any size in
2647 * reasonable range (24..49 AIUI) with no default specified.
2649 compatibility(VT420);
2650 if (term->esc_nargs == 1 && term->esc_args[0] > 0) {
2651 if (!term->cfg.no_remote_resize)
2652 request_resize(term->frontend, term->cols,
2653 def(term->esc_args[0],
2658 case ANSI('|', '$'):
2659 /* VT340/VT420 sequence DECSCPP
2660 * Set number of columns per page
2661 * Docs imply range is only 80 or 132, but I'll allow any.
2663 compatibility(VT340TEXT);
2664 if (term->esc_nargs <= 1) {
2665 if (!term->cfg.no_remote_resize)
2666 request_resize(term->frontend,
2667 def(term->esc_args[0],
2668 term->cfg.width), term->rows);
2672 case 'X': /* write N spaces w/o moving cursor */
2673 /* XXX VTTEST says this is vt220, vt510 manual says vt100 */
2674 compatibility(ANSIMIN);
2676 int n = def(term->esc_args[0], 1);
2678 unsigned long *p = term->cpos;
2679 if (n > term->cols - term->curs.x)
2680 n = term->cols - term->curs.x;
2681 cursplus = term->curs;
2683 check_boundary(term, term->curs.x, term->curs.y);
2684 check_boundary(term, term->curs.x+n, term->curs.y);
2685 check_selection(term, term->curs, cursplus);
2687 *p++ = term->erase_char;
2688 term->seen_disp_event = TRUE;
2691 case 'x': /* report terminal characteristics */
2692 compatibility(VT100);
2695 int i = def(term->esc_args[0], 0);
2696 if (i == 0 || i == 1) {
2697 strcpy(buf, "\033[2;1;1;112;112;1;0x");
2699 ldisc_send(term->ldisc, buf, 20, 0);
2703 case 'Z': /* BackTab for xterm */
2704 compatibility(OTHER);
2706 int i = def(term->esc_args[0], 1);
2707 pos old_curs = term->curs;
2709 for(;i>0 && term->curs.x>0; i--) {
2712 } while (term->curs.x >0 &&
2713 !term->tabs[term->curs.x]);
2716 check_selection(term, old_curs, term->curs);
2719 case ANSI('L', '='):
2720 compatibility(OTHER);
2721 term->use_bce = (term->esc_args[0] <= 0);
2722 term->erase_char = ERASE_CHAR;
2724 term->erase_char = (' ' | ATTR_ASCII |
2726 (ATTR_FGMASK | ATTR_BGMASK)));
2728 case ANSI('E', '='):
2729 compatibility(OTHER);
2730 term->blink_is_real = (term->esc_args[0] >= 1);
2732 case ANSI('p', '"'):
2734 * Allow the host to make this emulator a
2735 * 'perfect' VT102. This first appeared in
2736 * the VT220, but we do need to get back to
2737 * PuTTY mode so I won't check it.
2739 * The arg in 40..42,50 are a PuTTY extension.
2740 * The 2nd arg, 8bit vs 7bit is not checked.
2742 * Setting VT102 mode should also change
2743 * the Fkeys to generate PF* codes as a
2744 * real VT102 has no Fkeys. The VT220 does
2745 * this, F11..F13 become ESC,BS,LF other
2746 * Fkeys send nothing.
2748 * Note ESC c will NOT change this!
2751 switch (term->esc_args[0]) {
2753 term->compatibility_level &= ~TM_VTXXX;
2754 term->compatibility_level |= TM_VT102;
2757 term->compatibility_level &= ~TM_VTXXX;
2758 term->compatibility_level |= TM_VT220;
2762 if (term->esc_args[0] > 60 &&
2763 term->esc_args[0] < 70)
2764 term->compatibility_level |= TM_VTXXX;
2768 term->compatibility_level &= TM_VTXXX;
2771 term->compatibility_level = TM_PUTTY;
2774 term->compatibility_level = TM_SCOANSI;
2778 term->compatibility_level = TM_PUTTY;
2784 /* Change the response to CSI c */
2785 if (term->esc_args[0] == 50) {
2788 strcpy(term->id_string, "\033[?");
2789 for (i = 1; i < term->esc_nargs; i++) {
2791 strcat(term->id_string, ";");
2792 sprintf(lbuf, "%d", term->esc_args[i]);
2793 strcat(term->id_string, lbuf);
2795 strcat(term->id_string, "c");
2798 /* Is this a good idea ?
2799 * Well we should do a soft reset at this point ...
2801 if (!has_compat(VT420) && has_compat(VT100)) {
2802 if (!term->cfg.no_remote_resize) {
2803 if (term->reset_132)
2804 request_resize(132, 24);
2806 request_resize(80, 24);
2814 term->osc_w = FALSE;
2816 case 'P': /* Linux palette sequence */
2817 term->termstate = SEEN_OSC_P;
2818 term->osc_strlen = 0;
2820 case 'R': /* Linux palette reset */
2821 palette_reset(term->frontend);
2822 term_invalidate(term);
2823 term->termstate = TOPLEVEL;
2825 case 'W': /* word-set */
2826 term->termstate = SEEN_OSC_W;
2839 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
2843 * Grotty hack to support xterm and DECterm title
2844 * sequences concurrently.
2846 if (term->esc_args[0] == 2) {
2847 term->esc_args[0] = 1;
2850 /* else fall through */
2852 term->termstate = OSC_STRING;
2853 term->osc_strlen = 0;
2858 * This OSC stuff is EVIL. It takes just one character to get into
2859 * sysline mode and it's not initially obvious how to get out.
2860 * So I've added CR and LF as string aborts.
2861 * This shouldn't effect compatibility as I believe embedded
2862 * control characters are supposed to be interpreted (maybe?)
2863 * and they don't display anything useful anyway.
2867 if (c == '\012' || c == '\015') {
2868 term->termstate = TOPLEVEL;
2869 } else if (c == 0234 || c == '\007') {
2871 * These characters terminate the string; ST and BEL
2872 * terminate the sequence and trigger instant
2873 * processing of it, whereas ESC goes back to SEEN_ESC
2874 * mode unless it is followed by \, in which case it is
2875 * synonymous with ST in the first place.
2878 term->termstate = TOPLEVEL;
2879 } else if (c == '\033')
2880 term->termstate = OSC_MAYBE_ST;
2881 else if (term->osc_strlen < OSC_STR_MAX)
2882 term->osc_string[term->osc_strlen++] = c;
2886 int max = (term->osc_strlen == 0 ? 21 : 16);
2888 if (c >= '0' && c <= '9')
2890 else if (c >= 'A' && c <= 'A' + max - 10)
2892 else if (c >= 'a' && c <= 'a' + max - 10)
2895 term->termstate = TOPLEVEL;
2898 term->osc_string[term->osc_strlen++] = val;
2899 if (term->osc_strlen >= 7) {
2900 palette_set(term->frontend, term->osc_string[0],
2901 term->osc_string[1] * 16 + term->osc_string[2],
2902 term->osc_string[3] * 16 + term->osc_string[4],
2903 term->osc_string[5] * 16 + term->osc_string[6]);
2904 term_invalidate(term);
2905 term->termstate = TOPLEVEL;
2921 term->esc_args[0] = 10 * term->esc_args[0] + c - '0';
2924 term->termstate = OSC_STRING;
2925 term->osc_strlen = 0;
2929 term->termstate = TOPLEVEL;
2930 term->seen_disp_event = TRUE;
2933 move(term, term->curs.x, term->curs.y - 1, 1);
2936 move(term, term->curs.x, term->curs.y + 1, 1);
2939 move(term, term->curs.x + 1, term->curs.y, 1);
2942 move(term, term->curs.x - 1, term->curs.y, 1);
2945 * From the VT100 Manual
2946 * NOTE: The special graphics characters in the VT100
2947 * are different from those in the VT52
2949 * From VT102 manual:
2950 * 137 _ Blank - Same
2951 * 140 ` Reserved - Humm.
2952 * 141 a Solid rectangle - Similar
2953 * 142 b 1/ - Top half of fraction for the
2954 * 143 c 3/ - subscript numbers below.
2957 * 146 f Degrees - Same
2958 * 147 g Plus or minus - Same
2960 * 151 i Ellipsis (dots)
2963 * 154 l Bar at scan 0
2964 * 155 m Bar at scan 1
2965 * 156 n Bar at scan 2
2966 * 157 o Bar at scan 3 - Similar
2967 * 160 p Bar at scan 4 - Similar
2968 * 161 q Bar at scan 5 - Similar
2969 * 162 r Bar at scan 6 - Same
2970 * 163 s Bar at scan 7 - Similar
2985 term->cset_attr[term->cset = 0] = ATTR_LINEDRW;
2988 term->cset_attr[term->cset = 0] = ATTR_ASCII;
2991 move(term, 0, 0, 0);
2994 if (term->curs.y == 0)
2995 scroll(term, 0, term->rows - 1, -1, TRUE);
2996 else if (term->curs.y > 0)
2999 term->wrapnext = FALSE;
3002 erase_lots(term, FALSE, FALSE, TRUE);
3006 erase_lots(term, TRUE, FALSE, TRUE);
3010 /* XXX Print cursor line */
3013 /* XXX Start controller mode */
3016 /* XXX Stop controller mode */
3020 term->termstate = VT52_Y1;
3024 ldisc_send(term->ldisc, "\033/Z", 3, 0);
3027 term->app_keypad_keys = TRUE;
3030 term->app_keypad_keys = FALSE;
3033 /* XXX This should switch to VT100 mode not current or default
3034 * VT mode. But this will only have effect in a VT220+
3037 term->vt52_mode = FALSE;
3038 term->blink_is_real = term->cfg.blinktext;
3042 /* XXX Enter auto print mode */
3045 /* XXX Exit auto print mode */
3048 /* XXX Print screen */
3054 /* compatibility(ATARI) */
3055 move(term, 0, 0, 0);
3056 erase_lots(term, FALSE, FALSE, TRUE);
3060 /* compatibility(ATARI) */
3061 if (term->curs.y <= term->marg_b)
3062 scroll(term, term->curs.y, term->marg_b, -1, FALSE);
3065 /* compatibility(ATARI) */
3066 if (term->curs.y <= term->marg_b)
3067 scroll(term, term->curs.y, term->marg_b, 1, TRUE);
3070 /* compatibility(ATARI) */
3071 term->termstate = VT52_FG;
3074 /* compatibility(ATARI) */
3075 term->termstate = VT52_BG;
3078 /* compatibility(ATARI) */
3079 erase_lots(term, FALSE, TRUE, FALSE);
3083 /* compatibility(ATARI) */
3084 term->cursor_on = TRUE;
3087 /* compatibility(ATARI) */
3088 term->cursor_on = FALSE;
3090 /* case 'j': Save cursor position - broken on ST */
3091 /* case 'k': Restore cursor position */
3093 /* compatibility(ATARI) */
3094 erase_lots(term, TRUE, TRUE, TRUE);
3096 term->wrapnext = FALSE;
3100 /* compatibility(ATARI) */
3101 erase_lots(term, TRUE, TRUE, FALSE);
3104 /* compatibility(ATARI) */
3105 term->curr_attr |= ATTR_REVERSE;
3108 /* compatibility(ATARI) */
3109 term->curr_attr &= ~ATTR_REVERSE;
3111 case 'v': /* wrap Autowrap on - Wyse style */
3112 /* compatibility(ATARI) */
3115 case 'w': /* Autowrap off */
3116 /* compatibility(ATARI) */
3121 /* compatibility(OTHER) */
3122 term->vt52_bold = FALSE;
3123 term->curr_attr = ATTR_DEFAULT;
3125 term->erase_char = (' ' | ATTR_ASCII |
3127 (ATTR_FGMASK | ATTR_BGMASK)));
3130 /* compatibility(VI50) */
3131 term->curr_attr |= ATTR_UNDER;
3134 /* compatibility(VI50) */
3135 term->curr_attr &= ~ATTR_UNDER;
3138 /* compatibility(VI50) */
3139 term->vt52_bold = TRUE;
3140 term->curr_attr |= ATTR_BOLD;
3143 /* compatibility(VI50) */
3144 term->vt52_bold = FALSE;
3145 term->curr_attr &= ~ATTR_BOLD;
3151 term->termstate = VT52_Y2;
3152 move(term, term->curs.x, c - ' ', 0);
3155 term->termstate = TOPLEVEL;
3156 move(term, c - ' ', term->curs.y, 0);
3161 term->termstate = TOPLEVEL;
3162 term->curr_attr &= ~ATTR_FGMASK;
3163 term->curr_attr &= ~ATTR_BOLD;
3164 term->curr_attr |= (c & 0x7) << ATTR_FGSHIFT;
3165 if ((c & 0x8) || term->vt52_bold)
3166 term->curr_attr |= ATTR_BOLD;
3169 term->erase_char = (' ' | ATTR_ASCII |
3171 (ATTR_FGMASK | ATTR_BGMASK)));
3174 term->termstate = TOPLEVEL;
3175 term->curr_attr &= ~ATTR_BGMASK;
3176 term->curr_attr &= ~ATTR_BLINK;
3177 term->curr_attr |= (c & 0x7) << ATTR_BGSHIFT;
3179 /* Note: bold background */
3181 term->curr_attr |= ATTR_BLINK;
3184 term->erase_char = (' ' | ATTR_ASCII |
3186 (ATTR_FGMASK | ATTR_BGMASK)));
3189 default: break; /* placate gcc warning about enum use */
3191 if (term->selstate != NO_SELECTION) {
3192 pos cursplus = term->curs;
3194 check_selection(term, term->curs, cursplus);
3198 term_print_flush(term);
3203 * Compare two lines to determine whether they are sufficiently
3204 * alike to scroll-optimise one to the other. Return the degree of
3207 static int linecmp(Terminal *term, unsigned long *a, unsigned long *b)
3211 for (i = n = 0; i < term->cols; i++)
3212 n += (*a++ == *b++);
3218 * Given a context, update the window. Out of paranoia, we don't
3219 * allow WM_PAINT responses to do scrolling optimisations.
3221 static void do_paint(Terminal *term, Context ctx, int may_optimise)
3223 int i, j, our_curs_y, our_curs_x;
3224 unsigned long rv, cursor;
3227 long cursor_background = ERASE_CHAR;
3228 unsigned long ticks;
3229 #ifdef OPTIMISE_SCROLL
3230 struct scrollregion *sr;
3231 #endif /* OPTIMISE_SCROLL */
3234 * Check the visual bell state.
3236 if (term->in_vbell) {
3237 ticks = GETTICKCOUNT();
3238 if (ticks - term->vbell_startpoint >= VBELL_TIMEOUT)
3239 term->in_vbell = FALSE;
3242 rv = (!term->rvideo ^ !term->in_vbell ? ATTR_REVERSE : 0);
3245 * screen array, disptop, scrtop,
3247 * cfg.blinkpc, blink_is_real, tblinker,
3248 * curs.y, curs.x, blinker, cfg.blink_cur, cursor_on, has_focus, wrapnext
3251 /* Has the cursor position or type changed ? */
3252 if (term->cursor_on) {
3253 if (term->has_focus) {
3254 if (term->blinker || !term->cfg.blink_cur)
3255 cursor = TATTR_ACTCURS;
3259 cursor = TATTR_PASCURS;
3261 cursor |= TATTR_RIGHTCURS;
3264 our_curs_y = term->curs.y - term->disptop;
3267 * Adjust the cursor position in the case where it's
3268 * resting on the right-hand half of a CJK wide character.
3269 * xterm's behaviour here, which seems adequate to me, is
3270 * to display the cursor covering the _whole_ character,
3271 * exactly as if it were one space to the left.
3273 unsigned long *ldata = lineptr(term->curs.y);
3274 our_curs_x = term->curs.x;
3275 if (our_curs_x > 0 &&
3276 (ldata[our_curs_x] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3280 if (term->dispcurs && (term->curstype != cursor ||
3282 term->disptext + our_curs_y * (term->cols + 1) +
3284 if (term->dispcurs > term->disptext &&
3285 (*term->dispcurs & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3286 term->dispcurs[-1] |= ATTR_INVALID;
3287 if ( (term->dispcurs[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3288 term->dispcurs[1] |= ATTR_INVALID;
3289 *term->dispcurs |= ATTR_INVALID;
3292 term->dispcurs = NULL;
3294 #ifdef OPTIMISE_SCROLL
3296 sr = term->scrollhead;
3298 struct scrollregion *next = sr->next;
3299 do_scroll(ctx, sr->topline, sr->botline, sr->lines);
3303 term->scrollhead = term->scrolltail = NULL;
3304 #endif /* OPTIMISE_SCROLL */
3306 /* The normal screen data */
3307 for (i = 0; i < term->rows; i++) {
3308 unsigned long *ldata;
3310 int idx, dirty_line, dirty_run, selected;
3311 unsigned long attr = 0;
3312 int updated_line = 0;
3315 int last_run_dirty = 0;
3317 scrpos.y = i + term->disptop;
3318 ldata = lineptr(scrpos.y);
3319 lattr = (ldata[term->cols] & LATTR_MODE);
3321 idx = i * (term->cols + 1);
3322 dirty_run = dirty_line = (ldata[term->cols] !=
3323 term->disptext[idx + term->cols]);
3324 term->disptext[idx + term->cols] = ldata[term->cols];
3326 for (j = 0; j < term->cols; j++, idx++) {
3327 unsigned long tattr, tchar;
3328 unsigned long *d = ldata + j;
3332 tchar = (*d & (CHAR_MASK | CSET_MASK));
3333 tattr = (*d & (ATTR_MASK ^ CSET_MASK));
3334 switch (tchar & CSET_MASK) {
3336 tchar = term->ucsdata->unitab_line[tchar & 0xFF];
3339 tchar = term->ucsdata->unitab_xterm[tchar & 0xFF];
3342 tchar = term->ucsdata->unitab_scoacs[tchar&0xFF];
3345 tattr |= (tchar & CSET_MASK);
3347 if ((d[1] & (CHAR_MASK | CSET_MASK)) == UCSWIDE)
3350 /* Video reversing things */
3351 if (term->selstate == DRAGGING || term->selstate == SELECTED) {
3352 if (term->seltype == LEXICOGRAPHIC)
3353 selected = (posle(term->selstart, scrpos) &&
3354 poslt(scrpos, term->selend));
3356 selected = (posPle(term->selstart, scrpos) &&
3357 posPlt(scrpos, term->selend));
3361 ^ (selected ? ATTR_REVERSE : 0));
3363 /* 'Real' blinking ? */
3364 if (term->blink_is_real && (tattr & ATTR_BLINK)) {
3365 if (term->has_focus && term->tblinker) {
3366 tchar = term->ucsdata->unitab_line[(unsigned char)' '];
3368 tattr &= ~ATTR_BLINK;
3372 * Check the font we'll _probably_ be using to see if
3373 * the character is wide when we don't want it to be.
3375 if ((tchar | tattr) != (term->disptext[idx]& ~ATTR_NARROW)) {
3376 if ((tattr & ATTR_WIDE) == 0 &&
3377 char_width(ctx, (tchar | tattr) & 0xFFFF) == 2)
3378 tattr |= ATTR_NARROW;
3379 } else if (term->disptext[idx]&ATTR_NARROW)
3380 tattr |= ATTR_NARROW;
3382 /* Cursor here ? Save the 'background' */
3383 if (i == our_curs_y && j == our_curs_x) {
3384 cursor_background = tattr | tchar;
3385 term->dispcurs = term->disptext + idx;
3388 if ((term->disptext[idx] ^ tattr) & ATTR_WIDE)
3391 break_run = (((tattr ^ attr) & term->attr_mask) ||
3392 j - start >= sizeof(ch));
3394 /* Special hack for VT100 Linedraw glyphs */
3395 if ((attr & CSET_MASK) == 0x2300 && tchar >= 0xBA
3396 && tchar <= 0xBD) break_run = TRUE;
3398 if (!term->ucsdata->dbcs_screenfont && !dirty_line) {
3399 if ((tchar | tattr) == term->disptext[idx])
3401 else if (!dirty_run && ccount == 1)
3406 if ((dirty_run || last_run_dirty) && ccount > 0) {
3407 do_text(ctx, start, i, ch, ccount, attr, lattr);
3413 if (term->ucsdata->dbcs_screenfont)
3414 last_run_dirty = dirty_run;
3415 dirty_run = dirty_line;
3418 if ((tchar | tattr) != term->disptext[idx])
3420 ch[ccount++] = (char) tchar;
3421 term->disptext[idx] = tchar | tattr;
3423 /* If it's a wide char step along to the next one. */
3424 if (tattr & ATTR_WIDE) {
3425 if (++j < term->cols) {
3429 * By construction above, the cursor should not
3430 * be on the right-hand half of this character.
3433 assert(!(i == our_curs_y && j == our_curs_x));
3434 if (term->disptext[idx] != *d)
3436 term->disptext[idx] = *d;
3440 if (dirty_run && ccount > 0) {
3441 do_text(ctx, start, i, ch, ccount, attr, lattr);
3445 /* Cursor on this line ? (and changed) */
3446 if (i == our_curs_y && (term->curstype != cursor || updated_line)) {
3447 ch[0] = (char) (cursor_background & CHAR_MASK);
3448 attr = (cursor_background & ATTR_MASK) | cursor;
3449 do_cursor(ctx, our_curs_x, i, ch, 1, attr, lattr);
3450 term->curstype = cursor;
3456 * Flick the switch that says if blinking things should be shown or hidden.
3459 void term_blink(Terminal *term, int flg)
3461 long now, blink_diff;
3463 now = GETTICKCOUNT();
3464 blink_diff = now - term->last_tblink;
3466 /* Make sure the text blinks no more than 2Hz; we'll use 0.45 s period. */
3467 if (blink_diff < 0 || blink_diff > (TICKSPERSEC * 9 / 20)) {
3468 term->last_tblink = now;
3469 term->tblinker = !term->tblinker;
3474 term->last_blink = now;
3478 blink_diff = now - term->last_blink;
3480 /* Make sure the cursor blinks no faster than system blink rate */
3481 if (blink_diff >= 0 && blink_diff < (long) CURSORBLINK)
3484 term->last_blink = now;
3485 term->blinker = !term->blinker;
3489 * Invalidate the whole screen so it will be repainted in full.
3491 void term_invalidate(Terminal *term)
3495 for (i = 0; i < term->rows * (term->cols + 1); i++)
3496 term->disptext[i] = ATTR_INVALID;
3500 * Paint the window in response to a WM_PAINT message.
3502 void term_paint(Terminal *term, Context ctx,
3503 int left, int top, int right, int bottom, int immediately)
3506 if (left < 0) left = 0;
3507 if (top < 0) top = 0;
3508 if (right >= term->cols) right = term->cols-1;
3509 if (bottom >= term->rows) bottom = term->rows-1;
3511 for (i = top; i <= bottom && i < term->rows; i++) {
3512 if ((term->disptext[i * (term->cols + 1) + term->cols] &
3513 LATTR_MODE) == LATTR_NORM)
3514 for (j = left; j <= right && j < term->cols; j++)
3515 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
3517 for (j = left / 2; j <= right / 2 + 1 && j < term->cols; j++)
3518 term->disptext[i * (term->cols + 1) + j] = ATTR_INVALID;
3521 /* This should happen soon enough, also for some reason it sometimes
3522 * fails to actually do anything when re-sizing ... painting the wrong
3526 do_paint (term, ctx, FALSE);
3530 * Attempt to scroll the scrollback. The second parameter gives the
3531 * position we want to scroll to; the first is +1 to denote that
3532 * this position is relative to the beginning of the scrollback, -1
3533 * to denote it is relative to the end, and 0 to denote that it is
3534 * relative to the current position.
3536 void term_scroll(Terminal *term, int rel, int where)
3538 int sbtop = -sblines(term);
3539 #ifdef OPTIMISE_SCROLL
3540 int olddisptop = term->disptop;
3542 #endif /* OPTIMISE_SCROLL */
3544 term->disptop = (rel < 0 ? 0 : rel > 0 ? sbtop : term->disptop) + where;
3545 if (term->disptop < sbtop)
3546 term->disptop = sbtop;
3547 if (term->disptop > 0)
3550 #ifdef OPTIMISE_SCROLL
3551 shift = (term->disptop - olddisptop);
3552 if (shift < term->rows && shift > -term->rows)
3553 scroll_display(term, 0, term->rows - 1, shift);
3554 #endif /* OPTIMISE_SCROLL */
3558 static void clipme(Terminal *term, pos top, pos bottom, int rect)
3561 wchar_t *wbptr; /* where next char goes within workbuf */
3563 int wblen = 0; /* workbuf len */
3564 int buflen; /* amount of memory allocated to workbuf */
3566 buflen = 5120; /* Default size */
3567 workbuf = snewn(buflen, wchar_t);
3568 wbptr = workbuf; /* start filling here */
3569 old_top_x = top.x; /* needed for rect==1 */
3571 while (poslt(top, bottom)) {
3573 unsigned long *ldata = lineptr(top.y);
3577 * nlpos will point at the maximum position on this line we
3578 * should copy up to. So we start it at the end of the
3582 nlpos.x = term->cols;
3585 * ... move it backwards if there's unused space at the end
3586 * of the line (and also set `nl' if this is the case,
3587 * because in normal selection mode this means we need a
3588 * newline at the end)...
3590 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3591 while (((ldata[nlpos.x - 1] & 0xFF) == 0x20 ||
3592 (DIRECT_CHAR(ldata[nlpos.x - 1]) &&
3593 (ldata[nlpos.x - 1] & CHAR_MASK) == 0x20))
3594 && poslt(top, nlpos))
3596 if (poslt(nlpos, bottom))
3598 } else if (ldata[term->cols] & LATTR_WRAPPED2) {
3599 /* Ignore the last char on the line in a WRAPPED2 line. */
3604 * ... and then clip it to the terminal x coordinate if
3605 * we're doing rectangular selection. (In this case we
3606 * still did the above, so that copying e.g. the right-hand
3607 * column from a table doesn't fill with spaces on the
3611 if (nlpos.x > bottom.x)
3613 nl = (top.y < bottom.y);
3616 while (poslt(top, bottom) && poslt(top, nlpos)) {
3619 sprintf(cbuf, "<U+%04x>", (ldata[top.x] & 0xFFFF));
3621 wchar_t cbuf[16], *p;
3622 int uc = (ldata[top.x] & 0xFFFF);
3625 if (uc == UCSWIDE) {
3630 switch (uc & CSET_MASK) {
3632 if (!term->cfg.rawcnp) {
3633 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
3637 uc = term->ucsdata->unitab_line[uc & 0xFF];
3640 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
3643 switch (uc & CSET_MASK) {
3645 uc = term->ucsdata->unitab_font[uc & 0xFF];
3648 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
3652 set = (uc & CSET_MASK);
3653 c = (uc & CHAR_MASK);
3657 if (DIRECT_FONT(uc)) {
3658 if (c >= ' ' && c != 0x7F) {
3662 if (is_dbcs_leadbyte(term->ucsdata->font_codepage, (BYTE) c)) {
3664 buf[1] = (char) (0xFF & ldata[top.x + 1]);
3665 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 2, wbuf, 4);
3669 rv = mb_to_wc(term->ucsdata->font_codepage, 0, buf, 1, wbuf, 4);
3673 memcpy(cbuf, wbuf, rv * sizeof(wchar_t));
3680 for (p = cbuf; *p; p++) {
3681 /* Enough overhead for trailing NL and nul */
3682 if (wblen >= buflen - 16) {
3684 workbuf = sresize(workbuf, buflen, wchar_t);
3685 wbptr = workbuf + wblen;
3694 for (i = 0; i < sel_nl_sz; i++) {
3696 *wbptr++ = sel_nl[i];
3700 top.x = rect ? old_top_x : 0;
3702 #if SELECTION_NUL_TERMINATED
3706 write_clip(term->frontend, workbuf, wblen, FALSE); /* transfer to clipbd */
3707 if (buflen > 0) /* indicates we allocated this buffer */
3711 void term_copyall(Terminal *term)
3714 top.y = -sblines(term);
3716 clipme(term, top, term->curs, 0);
3720 * The wordness array is mainly for deciding the disposition of the
3721 * US-ASCII characters.
3723 static int wordtype(Terminal *term, int uc)
3726 int start, end, ctype;
3728 static const struct ucsword ucs_words[] = {
3734 0x037e, 0x037e, 1}, /* Greek question mark */
3736 0x0387, 0x0387, 1}, /* Greek ano teleia */
3738 0x055a, 0x055f, 1}, /* Armenian punctuation */
3740 0x0589, 0x0589, 1}, /* Armenian full stop */
3742 0x0700, 0x070d, 1}, /* Syriac punctuation */
3744 0x104a, 0x104f, 1}, /* Myanmar punctuation */
3746 0x10fb, 0x10fb, 1}, /* Georgian punctuation */
3748 0x1361, 0x1368, 1}, /* Ethiopic punctuation */
3750 0x166d, 0x166e, 1}, /* Canadian Syl. punctuation */
3752 0x17d4, 0x17dc, 1}, /* Khmer punctuation */
3754 0x1800, 0x180a, 1}, /* Mongolian punctuation */
3756 0x2000, 0x200a, 0}, /* Various spaces */
3758 0x2070, 0x207f, 2}, /* superscript */
3760 0x2080, 0x208f, 2}, /* subscript */
3762 0x200b, 0x27ff, 1}, /* punctuation and symbols */
3764 0x3000, 0x3000, 0}, /* ideographic space */
3766 0x3001, 0x3020, 1}, /* ideographic punctuation */
3768 0x303f, 0x309f, 3}, /* Hiragana */
3770 0x30a0, 0x30ff, 3}, /* Katakana */
3772 0x3300, 0x9fff, 3}, /* CJK Ideographs */
3774 0xac00, 0xd7a3, 3}, /* Hangul Syllables */
3776 0xf900, 0xfaff, 3}, /* CJK Ideographs */
3778 0xfe30, 0xfe6b, 1}, /* punctuation forms */
3780 0xff00, 0xff0f, 1}, /* half/fullwidth ASCII */
3782 0xff1a, 0xff20, 1}, /* half/fullwidth ASCII */
3784 0xff3b, 0xff40, 1}, /* half/fullwidth ASCII */
3786 0xff5b, 0xff64, 1}, /* half/fullwidth ASCII */
3788 0xfff0, 0xffff, 0}, /* half/fullwidth ASCII */
3792 const struct ucsword *wptr;
3794 uc &= (CSET_MASK | CHAR_MASK);
3796 switch (uc & CSET_MASK) {
3798 uc = term->ucsdata->unitab_xterm[uc & 0xFF];
3801 uc = term->ucsdata->unitab_line[uc & 0xFF];
3804 uc = term->ucsdata->unitab_scoacs[uc&0xFF];
3807 switch (uc & CSET_MASK) {
3809 uc = term->ucsdata->unitab_font[uc & 0xFF];
3812 uc = term->ucsdata->unitab_oemcp[uc & 0xFF];
3816 /* For DBCS font's I can't do anything usefull. Even this will sometimes
3817 * fail as there's such a thing as a double width space. :-(
3819 if (term->ucsdata->dbcs_screenfont &&
3820 term->ucsdata->font_codepage == term->ucsdata->line_codepage)
3824 return term->wordness[uc];
3826 for (wptr = ucs_words; wptr->start; wptr++) {
3827 if (uc >= wptr->start && uc <= wptr->end)
3835 * Spread the selection outwards according to the selection mode.
3837 static pos sel_spread_half(Terminal *term, pos p, int dir)
3839 unsigned long *ldata;
3841 int topy = -sblines(term);
3843 ldata = lineptr(p.y);
3845 switch (term->selmode) {
3848 * In this mode, every character is a separate unit, except
3849 * for runs of spaces at the end of a non-wrapping line.
3851 if (!(ldata[term->cols] & LATTR_WRAPPED)) {
3852 unsigned long *q = ldata + term->cols;
3853 while (q > ldata && (q[-1] & CHAR_MASK) == 0x20)
3855 if (q == ldata + term->cols)
3857 if (p.x >= q - ldata)
3858 p.x = (dir == -1 ? q - ldata : term->cols - 1);
3863 * In this mode, the units are maximal runs of characters
3864 * whose `wordness' has the same value.
3866 wvalue = wordtype(term, UCSGET(ldata, p.x));
3869 int maxcols = (ldata[term->cols] & LATTR_WRAPPED2 ?
3870 term->cols-1 : term->cols);
3871 if (p.x < maxcols-1) {
3872 if (wordtype(term, UCSGET(ldata, p.x + 1)) == wvalue)
3877 if (ldata[term->cols] & LATTR_WRAPPED) {
3878 unsigned long *ldata2;
3879 ldata2 = lineptr(p.y+1);
3880 if (wordtype(term, UCSGET(ldata2, 0)) == wvalue) {
3893 if (wordtype(term, UCSGET(ldata, p.x - 1)) == wvalue)
3898 unsigned long *ldata2;
3902 ldata2 = lineptr(p.y-1);
3903 maxcols = (ldata2[term->cols] & LATTR_WRAPPED2 ?
3904 term->cols-1 : term->cols);
3905 if (ldata2[term->cols] & LATTR_WRAPPED) {
3906 if (wordtype(term, UCSGET(ldata2, maxcols-1))
3921 * In this mode, every line is a unit.
3923 p.x = (dir == -1 ? 0 : term->cols - 1);
3929 static void sel_spread(Terminal *term)
3931 if (term->seltype == LEXICOGRAPHIC) {
3932 term->selstart = sel_spread_half(term, term->selstart, -1);
3933 decpos(term->selend);
3934 term->selend = sel_spread_half(term, term->selend, +1);
3935 incpos(term->selend);
3939 void term_do_paste(Terminal *term)
3944 get_clip(term->frontend, &data, &len);
3945 if (data && len > 0) {
3948 term_seen_key_event(term); /* pasted data counts */
3950 if (term->paste_buffer)
3951 sfree(term->paste_buffer);
3952 term->paste_pos = term->paste_hold = term->paste_len = 0;
3953 term->paste_buffer = snewn(len, wchar_t);
3956 while (p < data + len) {
3957 while (p < data + len &&
3958 !(p <= data + len - sel_nl_sz &&
3959 !memcmp(p, sel_nl, sizeof(sel_nl))))
3964 for (i = 0; i < p - q; i++) {
3965 term->paste_buffer[term->paste_len++] = q[i];
3969 if (p <= data + len - sel_nl_sz &&
3970 !memcmp(p, sel_nl, sizeof(sel_nl))) {
3971 term->paste_buffer[term->paste_len++] = '\015';
3977 /* Assume a small paste will be OK in one go. */
3978 if (term->paste_len < 256) {
3980 luni_send(term->ldisc, term->paste_buffer, term->paste_len, 0);
3981 if (term->paste_buffer)
3982 sfree(term->paste_buffer);
3983 term->paste_buffer = 0;
3984 term->paste_pos = term->paste_hold = term->paste_len = 0;
3987 get_clip(term->frontend, NULL, NULL);
3990 void term_mouse(Terminal *term, Mouse_Button braw, Mouse_Button bcooked,
3991 Mouse_Action a, int x, int y, int shift, int ctrl, int alt)
3994 unsigned long *ldata;
3995 int raw_mouse = (term->xterm_mouse &&
3996 !term->cfg.no_mouse_rep &&
3997 !(term->cfg.mouse_override && shift));
3998 int default_seltype;
4002 if (a == MA_DRAG && !raw_mouse)
4003 term_scroll(term, 0, -1);
4005 if (y >= term->rows) {
4007 if (a == MA_DRAG && !raw_mouse)
4008 term_scroll(term, 0, +1);
4017 if (x >= term->cols)
4020 selpoint.y = y + term->disptop;
4022 ldata = lineptr(selpoint.y);
4023 if ((ldata[term->cols] & LATTR_MODE) != LATTR_NORM)
4027 int encstate = 0, r, c;
4034 encstate = 0x20; /* left button down */
4045 case MBT_WHEEL_DOWN:
4048 default: break; /* placate gcc warning about enum use */
4052 if (term->xterm_mouse == 1)
4058 term->mouse_is_down = 0;
4061 if (term->mouse_is_down == braw)
4063 term->mouse_is_down = braw;
4065 default: break; /* placate gcc warning about enum use */
4074 sprintf(abuf, "\033[M%c%c%c", encstate, c, r);
4075 ldisc_send(term->ldisc, abuf, 6, 0);
4081 * Set the selection type (rectangular or normal) at the start
4082 * of a selection attempt, from the state of Alt.
4084 if (!alt ^ !term->cfg.rect_select)
4085 default_seltype = RECTANGULAR;
4087 default_seltype = LEXICOGRAPHIC;
4089 if (term->selstate == NO_SELECTION) {
4090 term->seltype = default_seltype;
4093 if (bcooked == MBT_SELECT && a == MA_CLICK) {
4095 term->selstate = ABOUT_TO;
4096 term->seltype = default_seltype;
4097 term->selanchor = selpoint;
4098 term->selmode = SM_CHAR;
4099 } else if (bcooked == MBT_SELECT && (a == MA_2CLK || a == MA_3CLK)) {
4101 term->selmode = (a == MA_2CLK ? SM_WORD : SM_LINE);
4102 term->selstate = DRAGGING;
4103 term->selstart = term->selanchor = selpoint;
4104 term->selend = term->selstart;
4105 incpos(term->selend);
4107 } else if ((bcooked == MBT_SELECT && a == MA_DRAG) ||
4108 (bcooked == MBT_EXTEND && a != MA_RELEASE)) {
4109 if (term->selstate == ABOUT_TO && poseq(term->selanchor, selpoint))
4111 if (bcooked == MBT_EXTEND && a != MA_DRAG &&
4112 term->selstate == SELECTED) {
4113 if (term->seltype == LEXICOGRAPHIC) {
4115 * For normal selection, we extend by moving
4116 * whichever end of the current selection is closer
4119 if (posdiff(selpoint, term->selstart) <
4120 posdiff(term->selend, term->selstart) / 2) {
4121 term->selanchor = term->selend;
4122 decpos(term->selanchor);
4124 term->selanchor = term->selstart;
4128 * For rectangular selection, we have a choice of
4129 * _four_ places to put selanchor and selpoint: the
4130 * four corners of the selection.
4132 if (2*selpoint.x < term->selstart.x + term->selend.x)
4133 term->selanchor.x = term->selend.x-1;
4135 term->selanchor.x = term->selstart.x;
4137 if (2*selpoint.y < term->selstart.y + term->selend.y)
4138 term->selanchor.y = term->selend.y;
4140 term->selanchor.y = term->selstart.y;
4142 term->selstate = DRAGGING;
4144 if (term->selstate != ABOUT_TO && term->selstate != DRAGGING)
4145 term->selanchor = selpoint;
4146 term->selstate = DRAGGING;
4147 if (term->seltype == LEXICOGRAPHIC) {
4149 * For normal selection, we set (selstart,selend) to
4150 * (selpoint,selanchor) in some order.
4152 if (poslt(selpoint, term->selanchor)) {
4153 term->selstart = selpoint;
4154 term->selend = term->selanchor;
4155 incpos(term->selend);
4157 term->selstart = term->selanchor;
4158 term->selend = selpoint;
4159 incpos(term->selend);
4163 * For rectangular selection, we may need to
4164 * interchange x and y coordinates (if the user has
4165 * dragged in the -x and +y directions, or vice versa).
4167 term->selstart.x = min(term->selanchor.x, selpoint.x);
4168 term->selend.x = 1+max(term->selanchor.x, selpoint.x);
4169 term->selstart.y = min(term->selanchor.y, selpoint.y);
4170 term->selend.y = max(term->selanchor.y, selpoint.y);
4173 } else if ((bcooked == MBT_SELECT || bcooked == MBT_EXTEND) &&
4175 if (term->selstate == DRAGGING) {
4177 * We've completed a selection. We now transfer the
4178 * data to the clipboard.
4180 clipme(term, term->selstart, term->selend,
4181 (term->seltype == RECTANGULAR));
4182 term->selstate = SELECTED;
4184 term->selstate = NO_SELECTION;
4185 } else if (bcooked == MBT_PASTE
4187 #if MULTICLICK_ONLY_EVENT
4188 || a == MA_2CLK || a == MA_3CLK
4191 request_paste(term->frontend);
4197 void term_key(Terminal *term, Key_Sym keysym, wchar_t *text, size_t tlen,
4198 unsigned int modifiers, unsigned int flags)
4202 int prependesc = FALSE;
4206 fprintf(stderr, "keysym = %d, %d chars:", keysym, tlen);
4207 for (i = 0; i < tlen; i++)
4208 fprintf(stderr, " %04x", (unsigned)text[i]);
4209 fprintf(stderr, "\n");
4213 if ((flags & PKF_REPEAT) && term->repeat_off)
4216 /* Currently, Meta always just prefixes everything with ESC. */
4217 if (modifiers & PKM_META)
4219 modifiers &= ~PKM_META;
4222 * Alt is only used for Alt+keypad, which isn't supported yet, so
4225 modifiers &= ~PKM_ALT;
4227 /* Standard local function keys */
4228 switch (modifiers & (PKM_SHIFT | PKM_CONTROL)) {
4230 if (keysym == PK_PAGEUP)
4231 /* scroll up one page */;
4232 if (keysym == PK_PAGEDOWN)
4233 /* scroll down on page */;
4234 if (keysym == PK_INSERT)
4235 term_do_paste(term);
4238 if (keysym == PK_PAGEUP)
4239 /* scroll up one line */;
4240 if (keysym == PK_PAGEDOWN)
4241 /* scroll down one line */;
4242 /* Control-Numlock for app-keypad mode switch */
4243 if (keysym == PK_PF1)
4244 term->app_keypad_keys ^= 1;
4248 if (modifiers & PKM_ALT) {
4249 /* Alt+F4 (close) */
4250 /* Alt+Return (full screen) */
4251 /* Alt+Space (system menu) */
4254 if (keysym == PK_NULL && (modifiers & PKM_CONTROL) && tlen == 1 &&
4255 text[0] >= 0x20 && text[0] <= 0x7e) {
4256 /* ASCII chars + Control */
4257 if ((text[0] >= 0x40 && text[0] <= 0x5f) ||
4258 (text[0] >= 0x61 && text[0] <= 0x7a))
4262 * Control-2 should return ^@ (0x00), Control-6 should return
4263 * ^^ (0x1E), and Control-Minus should return ^_ (0x1F). Since
4264 * the DOS keyboard handling did it, and we have nothing better
4265 * to do with the key combo in question, we'll also map
4266 * Control-Backquote to ^\ (0x1C).
4269 case ' ': text[0] = 0x00; break;
4270 case '-': text[0] = 0x1f; break;
4271 case '/': text[0] = 0x1f; break;
4272 case '2': text[0] = 0x00; break;
4273 case '3': text[0] = 0x1b; break;
4274 case '4': text[0] = 0x1c; break;
4275 case '5': text[0] = 0x1d; break;
4276 case '6': text[0] = 0x1e; break;
4277 case '7': text[0] = 0x1f; break;
4278 case '8': text[0] = 0x7f; break;
4279 case '`': text[0] = 0x1c; break;
4284 /* Nethack keypad */
4285 if (term->cfg.nethack_keypad) {
4288 case PK_KP1: c = 'b'; break;
4289 case PK_KP2: c = 'j'; break;
4290 case PK_KP3: c = 'n'; break;
4291 case PK_KP4: c = 'h'; break;
4292 case PK_KP5: c = '.'; break;
4293 case PK_KP6: c = 'l'; break;
4294 case PK_KP7: c = 'y'; break;
4295 case PK_KP8: c = 'k'; break;
4296 case PK_KP9: c = 'u'; break;
4297 default: break; /* else gcc warns `enum value not used' */
4301 if (modifiers & PKM_CONTROL)
4303 else if (modifiers & PKM_SHIFT)
4311 /* Numeric Keypad */
4312 if (PK_ISKEYPAD(keysym)) {
4316 * In VT400 mode, PFn always emits an escape sequence. In
4317 * Linux and tilde modes, this only happens in app keypad mode.
4319 if (term->cfg.funky_type == FUNKY_VT400 ||
4320 ((term->cfg.funky_type == FUNKY_LINUX ||
4321 term->cfg.funky_type == FUNKY_TILDE) &&
4322 term->app_keypad_keys && !term->cfg.no_applic_k)) {
4324 case PK_PF1: xkey = 'P'; break;
4325 case PK_PF2: xkey = 'Q'; break;
4326 case PK_PF3: xkey = 'R'; break;
4327 case PK_PF4: xkey = 'S'; break;
4328 default: break; /* else gcc warns `enum value not used' */
4331 if (term->app_keypad_keys && !term->cfg.no_applic_k) {
4333 case PK_KP0: xkey = 'p'; break;
4334 case PK_KP1: xkey = 'q'; break;
4335 case PK_KP2: xkey = 'r'; break;
4336 case PK_KP3: xkey = 's'; break;
4337 case PK_KP4: xkey = 't'; break;
4338 case PK_KP5: xkey = 'u'; break;
4339 case PK_KP6: xkey = 'v'; break;
4340 case PK_KP7: xkey = 'w'; break;
4341 case PK_KP8: xkey = 'x'; break;
4342 case PK_KP9: xkey = 'y'; break;
4343 case PK_KPDECIMAL: xkey = 'n'; break;
4344 case PK_KPENTER: xkey = 'M'; break;
4345 default: break; /* else gcc warns `enum value not used' */
4347 if (term->cfg.funky_type == FUNKY_XTERM && tlen > 0) {
4349 * xterm can't see the layout of the keypad, so it has
4350 * to rely on the X keysyms returned by the keys.
4351 * Hence, we look at the strings here, not the PuTTY
4352 * keysyms (which describe the layout).
4356 if (modifiers & PKM_SHIFT)
4361 case '/': xkey = 'o'; break;
4362 case '*': xkey = 'j'; break;
4363 case '-': xkey = 'm'; break;
4367 * In all other modes, we try to retain the layout of
4368 * the DEC keypad in application mode.
4372 /* This key covers the '-' and ',' keys on a VT220 */
4373 if (modifiers & PKM_SHIFT)
4374 xkey = 'm'; /* VT220 '-' */
4376 xkey = 'l'; /* VT220 ',' */
4378 case PK_KPMINUS: xkey = 'm'; break;
4379 case PK_KPCOMMA: xkey = 'l'; break;
4380 default: break; /* else gcc warns `enum value not used' */
4385 if (term->vt52_mode) {
4386 if (xkey >= 'P' && xkey <= 'S')
4387 p += sprintf((char *) p, "\x1B%c", xkey);
4389 p += sprintf((char *) p, "\x1B?%c", xkey);
4391 p += sprintf((char *) p, "\x1BO%c", xkey);
4394 /* Not in application mode -- treat the number pad as arrow keys? */
4395 if ((flags & PKF_NUMLOCK) == 0) {
4397 case PK_KP0: keysym = PK_INSERT; break;
4398 case PK_KP1: keysym = PK_END; break;
4399 case PK_KP2: keysym = PK_DOWN; break;
4400 case PK_KP3: keysym = PK_PAGEDOWN; break;
4401 case PK_KP4: keysym = PK_LEFT; break;
4402 case PK_KP5: keysym = PK_REST; break;
4403 case PK_KP6: keysym = PK_RIGHT; break;
4404 case PK_KP7: keysym = PK_HOME; break;
4405 case PK_KP8: keysym = PK_UP; break;
4406 case PK_KP9: keysym = PK_PAGEUP; break;
4407 default: break; /* else gcc warns `enum value not used' */
4412 /* Miscellaneous keys */
4419 *p++ = (term->cfg.bksp_is_delete ? 0x7F : 0x08);
4420 else if (modifiers == PKM_SHIFT)
4421 /* We do the opposite of what is configured */
4422 *p++ = (term->cfg.bksp_is_delete ? 0x08 : 0x7F);
4428 else if (modifiers == PKM_SHIFT)
4429 *p++ = 0x1B, *p++ = '[', *p++ = 'Z';
4432 /* XXX window.c has ctrl+shift+space sending 0xa0 */
4434 if (modifiers == PKM_CONTROL)
4439 case PK_KPENTER: /* Odd keypad modes handled above */
4440 if (modifiers == 0) {
4442 if (term->cr_lf_return)
4446 default: break; /* else gcc warns `enum value not used' */
4449 /* SCO function keys and editing keys */
4450 if (term->cfg.funky_type == FUNKY_SCO) {
4451 if (PK_ISFKEY(keysym) && keysym <= PK_F12) {
4452 static char const codes[] =
4453 "MNOPQRSTUVWX" "YZabcdefghij" "klmnopqrstuv" "wxyz@[\\]^_`{";
4454 int index = keysym - PK_F1;
4456 if (modifiers & PKM_SHIFT) index += 12;
4457 if (modifiers & PKM_CONTROL) index += 24;
4458 p += sprintf((char *) p, "\x1B[%c", codes[index]);
4461 if (PK_ISEDITING(keysym)) {
4465 case PK_DELETE: *p++ = 0x7f; goto done;
4466 case PK_HOME: xkey = 'H'; break;
4467 case PK_INSERT: xkey = 'L'; break;
4468 case PK_END: xkey = 'F'; break;
4469 case PK_PAGEUP: xkey = 'I'; break;
4470 case PK_PAGEDOWN: xkey = 'G'; break;
4471 default: break; /* else gcc warns `enum value not used' */
4473 p += sprintf((char *) p, "\x1B[%c", xkey);
4477 if (PK_ISEDITING(keysym) && (modifiers & PKM_SHIFT) == 0) {
4480 if (term->cfg.funky_type == FUNKY_XTERM) {
4481 /* Xterm shuffles these keys, apparently. */
4483 case PK_HOME: keysym = PK_INSERT; break;
4484 case PK_INSERT: keysym = PK_HOME; break;
4485 case PK_DELETE: keysym = PK_END; break;
4486 case PK_END: keysym = PK_PAGEUP; break;
4487 case PK_PAGEUP: keysym = PK_DELETE; break;
4488 case PK_PAGEDOWN: keysym = PK_PAGEDOWN; break;
4489 default: break; /* else gcc warns `enum value not used' */
4494 if (term->cfg.rxvt_homeend &&
4495 (keysym == PK_HOME || keysym == PK_END)) {
4496 p += sprintf((char *) p, keysym == PK_HOME ? "\x1B[H" : "\x1BOw");
4500 if (term->vt52_mode) {
4504 * A real VT52 doesn't have these, and a VT220 doesn't
4505 * send anything for them in VT52 mode.
4508 case PK_HOME: xkey = 'H'; break;
4509 case PK_INSERT: xkey = 'L'; break;
4510 case PK_DELETE: xkey = 'M'; break;
4511 case PK_END: xkey = 'E'; break;
4512 case PK_PAGEUP: xkey = 'I'; break;
4513 case PK_PAGEDOWN: xkey = 'G'; break;
4514 default: break; /* else gcc warns `enum value not used' */
4516 p += sprintf((char *) p, "\x1B%c", xkey);
4521 case PK_HOME: code = 1; break;
4522 case PK_INSERT: code = 2; break;
4523 case PK_DELETE: code = 3; break;
4524 case PK_END: code = 4; break;
4525 case PK_PAGEUP: code = 5; break;
4526 case PK_PAGEDOWN: code = 6; break;
4527 default: break; /* else gcc warns `enum value not used' */
4529 p += sprintf((char *) p, "\x1B[%d~", code);
4533 if (PK_ISFKEY(keysym)) {
4534 /* Map Shift+F1-F10 to F11-F20 */
4535 if (keysym >= PK_F1 && keysym <= PK_F10 && (modifiers & PKM_SHIFT))
4537 if ((term->vt52_mode || term->cfg.funky_type == FUNKY_VT100P) &&
4539 /* XXX This overrides the XTERM/VT52 mode below */
4541 if (keysym >= PK_F6) offt++;
4542 if (keysym >= PK_F12) offt++;
4543 p += sprintf((char *) p, term->vt52_mode ? "\x1B%c" : "\x1BO%c",
4544 'P' + keysym - PK_F1 - offt);
4547 if (term->cfg.funky_type == FUNKY_LINUX && keysym <= PK_F5) {
4548 p += sprintf((char *) p, "\x1B[[%c", 'A' + keysym - PK_F1);
4551 if (term->cfg.funky_type == FUNKY_XTERM && keysym <= PK_F4) {
4552 if (term->vt52_mode)
4553 p += sprintf((char *) p, "\x1B%c", 'P' + keysym - PK_F1);
4555 p += sprintf((char *) p, "\x1BO%c", 'P' + keysym - PK_F1);
4558 p += sprintf((char *) p, "\x1B[%d~", 11 + keysym - PK_F1);
4562 if (PK_ISCURSOR(keysym)) {
4566 case PK_UP: xkey = 'A'; break;
4567 case PK_DOWN: xkey = 'B'; break;
4568 case PK_RIGHT: xkey = 'C'; break;
4569 case PK_LEFT: xkey = 'D'; break;
4570 case PK_REST: xkey = 'G'; break; /* centre key on number pad */
4571 default: break; /* else gcc warns `enum value not used' */
4573 if (term->vt52_mode)
4574 p += sprintf((char *) p, "\x1B%c", xkey);
4576 int app_flg = (term->app_cursor_keys && !term->cfg.no_applic_c);
4578 /* Useful mapping of Ctrl-arrows */
4579 if (modifiers == PKM_CONTROL)
4583 p += sprintf((char *) p, "\x1BO%c", xkey);
4585 p += sprintf((char *) p, "\x1B[%c", xkey);
4591 if (p > output || tlen > 0) {
4593 * Interrupt an ongoing paste. I'm not sure
4594 * this is sensible, but for the moment it's
4595 * preferable to having to faff about buffering
4601 * We need not bother about stdin backlogs
4602 * here, because in GUI PuTTY we can't do
4603 * anything about it anyway; there's no means
4604 * of asking Windows to hold off on KEYDOWN
4605 * messages. We _have_ to buffer everything
4608 term_seen_key_event(term);
4612 fprintf(stderr, "sending ESC\n");
4614 ldisc_send(term->ldisc, "\x1b", 1, 1);
4619 fprintf(stderr, "sending %d bytes:", p - output);
4620 for (i = 0; i < p - output; i++)
4621 fprintf(stderr, " %02x", output[i]);
4622 fprintf(stderr, "\n");
4624 ldisc_send(term->ldisc, output, p - output, 1);
4625 } else if (tlen > 0) {
4627 fprintf(stderr, "sending %d unichars:", tlen);
4628 for (i = 0; i < tlen; i++)
4629 fprintf(stderr, " %04x", (unsigned) text[i]);
4630 fprintf(stderr, "\n");
4632 luni_send(term->ldisc, text, tlen, 1);
4637 void term_nopaste(Terminal *term)
4639 if (term->paste_len == 0)
4641 sfree(term->paste_buffer);
4642 term->paste_buffer = NULL;
4643 term->paste_len = 0;
4646 int term_paste_pending(Terminal *term)
4648 return term->paste_len != 0;
4651 void term_paste(Terminal *term)
4653 long now, paste_diff;
4655 if (term->paste_len == 0)
4658 /* Don't wait forever to paste */
4659 if (term->paste_hold) {
4660 now = GETTICKCOUNT();
4661 paste_diff = now - term->last_paste;
4662 if (paste_diff >= 0 && paste_diff < 450)
4665 term->paste_hold = 0;
4667 while (term->paste_pos < term->paste_len) {
4669 while (n + term->paste_pos < term->paste_len) {
4670 if (term->paste_buffer[term->paste_pos + n++] == '\015')
4674 luni_send(term->ldisc, term->paste_buffer + term->paste_pos, n, 0);
4675 term->paste_pos += n;
4677 if (term->paste_pos < term->paste_len) {
4678 term->paste_hold = 1;
4682 sfree(term->paste_buffer);
4683 term->paste_buffer = NULL;
4684 term->paste_len = 0;
4687 static void deselect(Terminal *term)
4689 term->selstate = NO_SELECTION;
4690 term->selstart.x = term->selstart.y = term->selend.x = term->selend.y = 0;
4693 void term_deselect(Terminal *term)
4699 int term_ldisc(Terminal *term, int option)
4701 if (option == LD_ECHO)
4702 return term->term_echoing;
4703 if (option == LD_EDIT)
4704 return term->term_editing;
4709 * from_backend(), to get data from the backend for the terminal.
4711 int from_backend(void *vterm, int is_stderr, const char *data, int len)
4713 Terminal *term = (Terminal *)vterm;
4717 bufchain_add(&term->inbuf, data, len);
4719 if (!term->in_term_out) {
4720 term->in_term_out = TRUE;
4721 term_blink(term, 1);
4723 term->in_term_out = FALSE;
4727 * term_out() always completely empties inbuf. Therefore,
4728 * there's no reason at all to return anything other than zero
4729 * from this function, because there _can't_ be a question of
4730 * the remote side needing to wait until term_out() has cleared
4733 * This is a slightly suboptimal way to deal with SSH2 - in
4734 * principle, the window mechanism would allow us to continue
4735 * to accept data on forwarded ports and X connections even
4736 * while the terminal processing was going slowly - but we
4737 * can't do the 100% right thing without moving the terminal
4738 * processing into a separate thread, and that might hurt
4739 * portability. So we manage stdout buffering the old SSH1 way:
4740 * if the terminal processing goes slowly, the whole SSH
4741 * connection stops accepting data until it's ready.
4743 * In practice, I can't imagine this causing serious trouble.
4748 void term_provide_logctx(Terminal *term, void *logctx)
4750 term->logctx = logctx;