1 /****************************************************************************
2 * Copyright 2018-2021,2022 Thomas E. Dickey *
3 * Copyright 1998-2016,2017 Free Software Foundation, Inc. *
4 * *
5 * Permission is hereby granted, free of charge, to any person obtaining a *
6 * copy of this software and associated documentation files (the *
7 * "Software"), to deal in the Software without restriction, including *
8 * without limitation the rights to use, copy, modify, merge, publish, *
9 * distribute, distribute with modifications, sublicense, and/or sell *
10 * copies of the Software, and to permit persons to whom the Software is *
11 * furnished to do so, subject to the following conditions: *
12 * *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
15 * *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
18 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
19 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
20 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
21 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
22 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
23 * *
24 * Except as contained in this notice, the name(s) of the above copyright *
25 * holders shall not be used in advertising or otherwise to promote the *
26 * sale, use or other dealings in this Software without prior written *
27 * authorization. *
28 ****************************************************************************/
29
30 /****************************************************************************
31 * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
32 * and: Eric S. Raymond <esr@snark.thyrsus.com> *
33 * and: Thomas E. Dickey 1996-on *
34 * and: Juergen Pfeifer 2009 *
35 ****************************************************************************/
36
37 /*
38 ** lib_set_term.c
39 **
40 ** The routine set_term().
41 **
42 */
43
44 #define NEW_PAIR_INTERNAL 1
45
46 #include <curses.priv.h>
47 #include <tic.h>
48 #include <new_pair.h>
49
50 #if USE_GPM_SUPPORT
51 #ifdef HAVE_LIBDL
52 /* use dynamic loader to avoid linkage dependency */
53 #include <dlfcn.h>
54 #endif
55 #endif
56
57 #undef CUR
58 #define CUR SP_TERMTYPE
59
60 MODULE_ID("$Id: lib_set_term.c,v 1.184 2022/12/10 21:34:12 tom Exp $")
61
62 #ifdef USE_TERM_DRIVER
63 #define MaxColors InfoOf(sp).maxcolors
64 #define NumLabels InfoOf(sp).numlabels
65 #else
66 #define MaxColors max_colors
67 #define NumLabels num_labels
68 #endif
69
NCURSES_EXPORT(SCREEN *)70 NCURSES_EXPORT(SCREEN *)
71 set_term(SCREEN *screenp)
72 {
73 SCREEN *oldSP;
74 SCREEN *newSP;
75
76 T((T_CALLED("set_term(%p)"), (void *) screenp));
77
78 _nc_lock_global(curses);
79
80 oldSP = CURRENT_SCREEN;
81 _nc_set_screen(screenp);
82 newSP = screenp;
83
84 if (newSP != 0) {
85 TINFO_SET_CURTERM(newSP, newSP->_term);
86 #if !USE_REENTRANT
87 curscr = CurScreen(newSP);
88 newscr = NewScreen(newSP);
89 stdscr = StdScreen(newSP);
90 COLORS = newSP->_color_count;
91 COLOR_PAIRS = newSP->_pair_count;
92 #endif
93 } else {
94 TINFO_SET_CURTERM(oldSP, 0);
95 #if !USE_REENTRANT
96 curscr = 0;
97 newscr = 0;
98 stdscr = 0;
99 COLORS = 0;
100 COLOR_PAIRS = 0;
101 #endif
102 }
103
104 _nc_unlock_global(curses);
105
106 T((T_RETURN("%p"), (void *) oldSP));
107 return (oldSP);
108 }
109
110 static void
_nc_free_keytry(TRIES * kt)111 _nc_free_keytry(TRIES * kt)
112 {
113 if (kt != 0) {
114 _nc_free_keytry(kt->child);
115 _nc_free_keytry(kt->sibling);
116 free(kt);
117 }
118 }
119
120 static bool
delink_screen(SCREEN * sp)121 delink_screen(SCREEN *sp)
122 {
123 SCREEN *last = 0;
124 SCREEN *temp;
125 bool result = FALSE;
126
127 for (each_screen(temp)) {
128 if (temp == sp) {
129 if (last)
130 last->_next_screen = sp->_next_screen;
131 else
132 _nc_screen_chain = sp->_next_screen;
133 result = TRUE;
134 break;
135 }
136 last = temp;
137 }
138 return result;
139 }
140
141 /*
142 * Free the storage associated with the given SCREEN sp.
143 */
144 NCURSES_EXPORT(void)
delscreen(SCREEN * sp)145 delscreen(SCREEN *sp)
146 {
147
148 T((T_CALLED("delscreen(%p)"), (void *) sp));
149
150 _nc_lock_global(curses);
151 if (delink_screen(sp)) {
152 WINDOWLIST *wl;
153 bool is_current = (sp == CURRENT_SCREEN);
154
155 #ifdef USE_SP_RIPOFF
156 if (safe_ripoff_sp && safe_ripoff_sp != safe_ripoff_stack) {
157 ripoff_t *rop;
158 for (rop = safe_ripoff_stack;
159 rop != safe_ripoff_sp && (rop - safe_ripoff_stack) < N_RIPS;
160 rop++) {
161 if (rop->win) {
162 (void) delwin(rop->win);
163 rop->win = 0;
164 }
165 }
166 }
167 #endif
168
169 /* delete all of the windows in this screen */
170 rescan:
171 for (each_window(sp, wl)) {
172 if (_nc_freewin(&(wl->win)) == OK) {
173 goto rescan;
174 }
175 }
176
177 if (sp->_slk != 0) {
178
179 if (sp->_slk->ent != 0) {
180 int i;
181
182 for (i = 0; i < sp->_slk->labcnt; ++i) {
183 FreeIfNeeded(sp->_slk->ent[i].ent_text);
184 FreeIfNeeded(sp->_slk->ent[i].form_text);
185 }
186 free(sp->_slk->ent);
187 }
188 free(sp->_slk);
189 sp->_slk = 0;
190 }
191
192 _nc_free_keytry(sp->_keytry);
193 sp->_keytry = 0;
194
195 _nc_free_keytry(sp->_key_ok);
196 sp->_key_ok = 0;
197
198 FreeIfNeeded(sp->_current_attr);
199
200 _nc_free_ordered_pairs(sp);
201 FreeIfNeeded(sp->_color_table);
202 FreeIfNeeded(sp->_color_pairs);
203
204 FreeIfNeeded(sp->_oldnum_list);
205 FreeIfNeeded(sp->oldhash);
206 FreeIfNeeded(sp->newhash);
207 FreeIfNeeded(sp->hashtab);
208
209 FreeIfNeeded(sp->_acs_map);
210 FreeIfNeeded(sp->_screen_acs_map);
211
212 NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG);
213 NCURSES_SP_NAME(del_curterm) (NCURSES_SP_ARGx sp->_term);
214 FreeIfNeeded(sp->out_buffer);
215 if (_nc_find_prescr() == sp) {
216 _nc_forget_prescr();
217 }
218 #if USE_GPM_SUPPORT
219 #ifdef HAVE_LIBDL
220 if (sp->_dlopen_gpm != 0) {
221 dlclose(sp->_dlopen_gpm);
222 sp->_dlopen_gpm = 0;
223 }
224 #endif
225 #endif /* USE_GPM_SUPPORT */
226 free(sp);
227
228 /*
229 * If this was the current screen, reset everything that the
230 * application might try to use (except cur_term, which may have
231 * multiple references in different screens).
232 */
233 if (is_current) {
234 #if !USE_REENTRANT
235 curscr = 0;
236 newscr = 0;
237 stdscr = 0;
238 COLORS = 0;
239 COLOR_PAIRS = 0;
240 #endif
241 _nc_set_screen(0);
242 #if USE_WIDEC_SUPPORT
243 if (SP == 0) {
244 FreeIfNeeded(_nc_wacs);
245 _nc_wacs = 0;
246 }
247 #endif
248 } else {
249 set_term(CURRENT_SCREEN);
250 }
251 }
252 _nc_unlock_global(curses);
253
254 returnVoid;
255 }
256
257 static bool
no_mouse_event(SCREEN * sp GCC_UNUSED)258 no_mouse_event(SCREEN *sp GCC_UNUSED)
259 {
260 return FALSE;
261 }
262
263 static bool
no_mouse_inline(SCREEN * sp GCC_UNUSED)264 no_mouse_inline(SCREEN *sp GCC_UNUSED)
265 {
266 return FALSE;
267 }
268
269 static bool
no_mouse_parse(SCREEN * sp GCC_UNUSED,int code GCC_UNUSED)270 no_mouse_parse(SCREEN *sp GCC_UNUSED, int code GCC_UNUSED)
271 {
272 return TRUE;
273 }
274
275 static void
no_mouse_resume(SCREEN * sp GCC_UNUSED)276 no_mouse_resume(SCREEN *sp GCC_UNUSED)
277 {
278 }
279
280 static void
no_mouse_wrap(SCREEN * sp GCC_UNUSED)281 no_mouse_wrap(SCREEN *sp GCC_UNUSED)
282 {
283 }
284
285 #if NCURSES_EXT_FUNCS && USE_COLORFGBG
286 static const char *
extract_fgbg(const char * src,int * result)287 extract_fgbg(const char *src, int *result)
288 {
289 const char *dst = 0;
290 char *tmp = 0;
291 long value = strtol(src, &tmp, 0);
292
293 if ((dst = tmp) == 0) {
294 dst = src;
295 } else if (value >= 0) {
296 *result = (int) value;
297 }
298 while (*dst != 0 && *dst != ';')
299 dst++;
300 if (*dst == ';')
301 dst++;
302 return dst;
303 }
304 #endif
305
306 #define ReturnScreenError() do { _nc_set_screen(0); \
307 returnCode(ERR); } while (0)
308
309 /* OS-independent screen initializations */
310 NCURSES_EXPORT(int)
NCURSES_SP_NAME(_nc_setupscreen)311 NCURSES_SP_NAME(_nc_setupscreen) (
312 #if NCURSES_SP_FUNCS
313 SCREEN **spp,
314 #endif
315 int slines,
316 int scolumns,
317 FILE *output,
318 int filtered,
319 int slk_format)
320 {
321 #ifndef USE_TERM_DRIVER
322 static const TTY null_TTY; /* all zeros iff uninitialized */
323 #endif
324 char *env;
325 int bottom_stolen = 0;
326 SCREEN *sp;
327 #ifndef USE_TERM_DRIVER
328 bool support_cookies = USE_XMC_SUPPORT;
329 #endif
330
331 T((T_CALLED("_nc_setupscreen(%d, %d, %p, %d, %d)"),
332 slines, scolumns, (void *) output, filtered, slk_format));
333
334 assert(CURRENT_SCREEN == 0); /* has been reset in newterm() ! */
335
336 #if NCURSES_SP_FUNCS
337 assert(spp != 0);
338 sp = *spp;
339
340 if (!sp) {
341 sp = _nc_alloc_screen_sp();
342 T(("_nc_alloc_screen_sp %p", (void *) sp));
343 *spp = sp;
344 }
345 if (sp == NULL) {
346 ReturnScreenError();
347 }
348 if ((sp->_acs_map = typeCalloc(chtype, ACS_LEN)) == NULL) {
349 ReturnScreenError();
350 }
351 if ((sp->_screen_acs_map = typeCalloc(bool, ACS_LEN)) == NULL) {
352 free(sp->_acs_map);
353 ReturnScreenError();
354 }
355
356 T(("created SP %p", (void *) sp));
357 sp->_next_screen = _nc_screen_chain;
358 _nc_screen_chain = sp;
359
360 if ((sp->_current_attr = typeCalloc(NCURSES_CH_T, 1)) == 0) {
361 ReturnScreenError();
362 }
363 #else
364 if (!_nc_alloc_screen()
365 || ((SP->_acs_map = typeCalloc(chtype, ACS_LEN)) == 0)
366 || ((SP->_screen_acs_map = typeCalloc(bool, ACS_LEN)) == 0)) {
367 returnCode(ERR);
368 }
369
370 T(("created SP %p", (void *) SP));
371
372 sp = SP; /* fixup so SET_LINES and SET_COLS works */
373 sp->_next_screen = _nc_screen_chain;
374 _nc_screen_chain = sp;
375
376 if ((sp->_current_attr = typeCalloc(NCURSES_CH_T, 1)) == 0) {
377 returnCode(ERR);
378 }
379 #endif
380
381 /*
382 * We should always check the screensize, just in case.
383 */
384 _nc_set_screen(sp);
385 sp->_term = cur_term;
386 #ifdef USE_TERM_DRIVER
387 TCBOf(sp)->csp = sp;
388 _nc_get_screensize(sp, sp->_term, &slines, &scolumns);
389 #else
390 _nc_get_screensize(sp, &slines, &scolumns);
391 #endif
392 SET_LINES(slines);
393 SET_COLS(scolumns);
394
395 T((T_CREATE("screen %s %dx%d"),
396 NCURSES_SP_NAME(termname) (NCURSES_SP_ARG), slines, scolumns));
397
398 sp->_filtered = filtered;
399
400 /* implement filter mode */
401 if (filtered) {
402 slines = 1;
403 SET_LINES(slines);
404 #ifdef USE_TERM_DRIVER
405 CallDriver(sp, td_setfilter);
406 #else
407 /* *INDENT-EQLS* */
408 clear_screen = ABSENT_STRING;
409 cursor_address = ABSENT_STRING;
410 cursor_down = ABSENT_STRING;
411 cursor_up = ABSENT_STRING;
412 parm_down_cursor = ABSENT_STRING;
413 parm_up_cursor = ABSENT_STRING;
414 row_address = ABSENT_STRING;
415 cursor_home = carriage_return;
416
417 if (back_color_erase)
418 clr_eos = ABSENT_STRING;
419
420 #endif
421 T(("filter screensize %dx%d", slines, scolumns));
422 }
423 #ifdef __DJGPP__
424 T(("setting output mode to binary"));
425 fflush(output);
426 setmode(output, O_BINARY);
427 #endif
428 #if defined(EXP_WIN32_DRIVER)
429 T(("setting output mode to binary"));
430 fflush(output);
431 _setmode(fileno(output), _O_BINARY);
432 #endif
433 sp->_lines = (NCURSES_SIZE_T) slines;
434 sp->_lines_avail = (NCURSES_SIZE_T) slines;
435 sp->_columns = (NCURSES_SIZE_T) scolumns;
436
437 fflush(output);
438 sp->_ofd = output ? fileno(output) : -1;
439 sp->_ofp = output;
440 #if defined(EXP_WIN32_DRIVER)
441 if (output)
442 _setmode(fileno(output), _O_BINARY);
443 #endif
444 sp->out_limit = (size_t) ((2 + slines) * (6 + scolumns));
445 if ((sp->out_buffer = malloc(sp->out_limit)) == 0)
446 sp->out_limit = 0;
447 sp->out_inuse = 0;
448
449 SP_PRE_INIT(sp);
450 SetNoPadding(sp);
451
452 #if NCURSES_EXT_FUNCS
453 sp->_default_color = FALSE;
454 sp->_has_sgr_39_49 = FALSE;
455
456 /*
457 * Set our assumption of the terminal's default foreground and background
458 * colors. The curs_color man-page states that we can assume that the
459 * background is black. The origin of this assumption appears to be
460 * terminals that displayed colored text, but no colored backgrounds, e.g.,
461 * the first colored terminals around 1980. More recent ones with better
462 * technology can display not only colored backgrounds, but all
463 * combinations. So a terminal might be something other than "white" on
464 * black (green/black looks monochrome too), but black on white or even
465 * on ivory.
466 *
467 * White-on-black is the simplest thing to use for monochrome. Almost
468 * all applications that use color paint both text and background, so
469 * the distinction is moot. But a few do not - which is why we leave this
470 * configurable (a better solution is to use assume_default_colors() for
471 * the rare applications that do require that sort of appearance, since
472 * is appears that more users expect to be able to make a white-on-black
473 * or black-on-white display under control of the application than not).
474 */
475 #ifdef USE_ASSUMED_COLOR
476 sp->_default_fg = COLOR_WHITE;
477 sp->_default_bg = COLOR_BLACK;
478 #else
479 sp->_default_fg = COLOR_DEFAULT;
480 sp->_default_bg = COLOR_DEFAULT;
481 #endif
482
483 /*
484 * Allow those assumed/default color assumptions to be overridden at
485 * runtime:
486 */
487 if ((env = getenv("NCURSES_ASSUMED_COLORS")) != 0) {
488 int fg, bg;
489 char sep1, sep2;
490 int count = sscanf(env, "%d%c%d%c", &fg, &sep1, &bg, &sep2);
491 if (count >= 1) {
492 sp->_default_fg = ((fg >= 0 && fg < MaxColors) ? fg : COLOR_DEFAULT);
493 if (count >= 3) {
494 sp->_default_bg = ((bg >= 0 && bg < MaxColors) ? bg : COLOR_DEFAULT);
495 }
496 TR(TRACE_CHARPUT | TRACE_MOVE,
497 ("from environment assumed fg=%d, bg=%d",
498 sp->_default_fg,
499 sp->_default_bg));
500 }
501 }
502 #if USE_COLORFGBG
503 /*
504 * If rxvt's $COLORFGBG variable is set, use it to specify the assumed
505 * default colors. Note that rxvt (mis)uses bold colors, equating a bold
506 * color to that value plus 8. We'll only use the non-bold color for now -
507 * decide later if it is worth having default attributes as well.
508 */
509 if (getenv("COLORFGBG") != 0) {
510 const char *p = getenv("COLORFGBG");
511 TR(TRACE_CHARPUT | TRACE_MOVE, ("decoding COLORFGBG %s", p));
512 p = extract_fgbg(p, &(sp->_default_fg));
513 p = extract_fgbg(p, &(sp->_default_bg));
514 if (*p) /* assume rxvt was compiled with xpm support */
515 extract_fgbg(p, &(sp->_default_bg));
516 TR(TRACE_CHARPUT | TRACE_MOVE, ("decoded fg=%d, bg=%d",
517 sp->_default_fg, sp->_default_bg));
518 if (sp->_default_fg >= MaxColors) {
519 if (set_a_foreground != ABSENT_STRING
520 && !strcmp(set_a_foreground, "\033[3%p1%dm")) {
521 set_a_foreground = strdup("\033[3%?%p1%{8}%>%t9%e%p1%d%;m");
522 } else {
523 sp->_default_fg %= MaxColors;
524 }
525 }
526 if (sp->_default_bg >= MaxColors) {
527 if (set_a_background != ABSENT_STRING
528 && !strcmp(set_a_background, "\033[4%p1%dm")) {
529 set_a_background = strdup("\033[4%?%p1%{8}%>%t9%e%p1%d%;m");
530 } else {
531 sp->_default_bg %= MaxColors;
532 }
533 }
534 }
535 #endif
536 #endif /* NCURSES_EXT_FUNCS */
537
538 sp->_maxclick = DEFAULT_MAXCLICK;
539 sp->_mouse_event = no_mouse_event;
540 sp->_mouse_inline = no_mouse_inline;
541 sp->_mouse_parse = no_mouse_parse;
542 sp->_mouse_resume = no_mouse_resume;
543 sp->_mouse_wrap = no_mouse_wrap;
544 sp->_mouse_fd = -1;
545
546 /*
547 * If we've no magic cookie support, we suppress attributes that xmc would
548 * affect, i.e., the attributes that affect the rendition of a space.
549 */
550 sp->_ok_attributes = NCURSES_SP_NAME(termattrs) (NCURSES_SP_ARG);
551 if (NCURSES_SP_NAME(has_colors) (NCURSES_SP_ARG)) {
552 sp->_ok_attributes |= A_COLOR;
553 }
554 #ifdef USE_TERM_DRIVER
555 _nc_cookie_init(sp);
556 #else
557 #if USE_XMC_SUPPORT
558 /*
559 * If we have no magic-cookie support compiled-in, or if it is suppressed
560 * in the environment, reset the support-flag.
561 */
562 if (magic_cookie_glitch >= 0) {
563 if (getenv("NCURSES_NO_MAGIC_COOKIE") != 0) {
564 support_cookies = FALSE;
565 }
566 }
567 #endif
568
569 if (!support_cookies && magic_cookie_glitch >= 0) {
570 T(("will disable attributes to work w/o magic cookies"));
571 }
572
573 if (magic_cookie_glitch > 0) { /* tvi, wyse */
574
575 sp->_xmc_triggers = sp->_ok_attributes & XMC_CONFLICT;
576 #if 0
577 /*
578 * We "should" treat colors as an attribute. The wyse350 (and its
579 * clones) appear to be the only ones that have both colors and magic
580 * cookies.
581 */
582 if (has_colors()) {
583 sp->_xmc_triggers |= A_COLOR;
584 }
585 #endif
586 sp->_xmc_suppress = sp->_xmc_triggers & (chtype) ~(A_BOLD);
587
588 T(("magic cookie attributes %s", _traceattr(sp->_xmc_suppress)));
589 /*
590 * Supporting line-drawing may be possible. But make the regular
591 * video attributes work first.
592 */
593 acs_chars = ABSENT_STRING;
594 ena_acs = ABSENT_STRING;
595 enter_alt_charset_mode = ABSENT_STRING;
596 exit_alt_charset_mode = ABSENT_STRING;
597 #if USE_XMC_SUPPORT
598 /*
599 * To keep the cookie support simple, suppress all of the optimization
600 * hooks except for clear_screen and the cursor addressing.
601 */
602 if (support_cookies) {
603 clr_eol = ABSENT_STRING;
604 clr_eos = ABSENT_STRING;
605 set_attributes = ABSENT_STRING;
606 }
607 #endif
608 } else if (magic_cookie_glitch == 0) { /* hpterm */
609 }
610
611 /*
612 * If magic cookies are not supported, cancel the strings that set
613 * video attributes.
614 */
615 if (!support_cookies && magic_cookie_glitch >= 0) {
616 magic_cookie_glitch = ABSENT_NUMERIC;
617 set_attributes = ABSENT_STRING;
618 enter_blink_mode = ABSENT_STRING;
619 enter_bold_mode = ABSENT_STRING;
620 enter_dim_mode = ABSENT_STRING;
621 enter_reverse_mode = ABSENT_STRING;
622 enter_standout_mode = ABSENT_STRING;
623 enter_underline_mode = ABSENT_STRING;
624 }
625
626 /* initialize normal acs before wide, since we use mapping in the latter */
627 #if !USE_WIDEC_SUPPORT
628 if (_nc_unicode_locale() && _nc_locale_breaks_acs(sp->_term)) {
629 acs_chars = NULL;
630 ena_acs = NULL;
631 enter_alt_charset_mode = NULL;
632 exit_alt_charset_mode = NULL;
633 set_attributes = NULL;
634 }
635 #endif
636 #endif
637
638 NCURSES_SP_NAME(_nc_init_acs) (NCURSES_SP_ARG);
639 #if USE_WIDEC_SUPPORT
640 sp->_screen_unicode = _nc_unicode_locale();
641 if (_nc_wacs == 0) {
642 _nc_init_wacs();
643 }
644 if (_nc_wacs == 0) {
645 ReturnScreenError();
646 }
647
648 sp->_screen_acs_fix = (sp->_screen_unicode
649 && _nc_locale_breaks_acs(sp->_term));
650 #endif
651 env = _nc_get_locale();
652 sp->_legacy_coding = ((env == 0)
653 || !strcmp(env, "C")
654 || !strcmp(env, "POSIX"));
655 T(("legacy-coding %d", sp->_legacy_coding));
656
657 sp->_nc_sp_idcok = TRUE;
658 sp->_nc_sp_idlok = FALSE;
659
660 sp->oldhash = 0;
661 sp->newhash = 0;
662
663 T(("creating newscr"));
664 NewScreen(sp) = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx slines, scolumns,
665 0, 0);
666 if (NewScreen(sp) == 0) {
667 ReturnScreenError();
668 }
669 T(("creating curscr"));
670 CurScreen(sp) = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx slines, scolumns,
671 0, 0);
672 if (CurScreen(sp) == 0) {
673 ReturnScreenError();
674 }
675 #if !USE_REENTRANT
676 newscr = NewScreen(sp);
677 curscr = CurScreen(sp);
678 #endif
679 #if USE_SIZECHANGE
680 sp->_resize = NCURSES_SP_NAME(resizeterm);
681 sp->_ungetch = safe_ungetch;
682 #endif
683
684 NewScreen(sp)->_clear = TRUE;
685 CurScreen(sp)->_clear = FALSE;
686
687 /*
688 * Get the current tty-modes. setupterm() may already have done this,
689 * unless we use the term-driver.
690 */
691 #ifndef USE_TERM_DRIVER
692 if (cur_term != 0 &&
693 !memcmp(&cur_term->Ottyb, &null_TTY, sizeof(TTY)))
694 #endif
695 {
696 NCURSES_SP_NAME(def_shell_mode) (NCURSES_SP_ARG);
697 NCURSES_SP_NAME(def_prog_mode) (NCURSES_SP_ARG);
698 }
699
700 if (safe_ripoff_sp && safe_ripoff_sp != safe_ripoff_stack) {
701 ripoff_t *rop;
702
703 for (rop = safe_ripoff_stack;
704 rop != safe_ripoff_sp && (rop - safe_ripoff_stack) < N_RIPS;
705 rop++) {
706
707 /* If we must simulate soft labels, grab off the line to be used.
708 We assume that we must simulate, if it is none of the standard
709 formats (4-4 or 3-2-3) for which there may be some hardware
710 support. */
711 if (rop->hook == _nc_slk_initialize) {
712 if (!TerminalOf(sp)) {
713 continue;
714 }
715 if (!(NumLabels <= 0 || !SLK_STDFMT(slk_format))) {
716 continue;
717 }
718 }
719 if (rop->hook) {
720 int count;
721 WINDOW *w;
722
723 count = (rop->line < 0) ? -rop->line : rop->line;
724 T(("ripping off %i lines at %s", count,
725 ((rop->line < 0)
726 ? "bottom"
727 : "top")));
728
729 w = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx
730 count, scolumns,
731 ((rop->line < 0)
732 ? sp->_lines_avail - count
733 : 0),
734 0);
735 if (w) {
736 rop->win = w;
737 rop->hook(w, scolumns);
738 } else {
739 ReturnScreenError();
740 }
741 if (rop->line < 0) {
742 bottom_stolen += count;
743 } else {
744 sp->_topstolen = (NCURSES_SIZE_T) (sp->_topstolen + count);
745 }
746 sp->_lines_avail = (NCURSES_SIZE_T) (sp->_lines_avail - count);
747 }
748 }
749 /* reset the stack */
750 safe_ripoff_sp = safe_ripoff_stack;
751 }
752
753 T(("creating stdscr"));
754 (void) bottom_stolen;
755 assert((sp->_lines_avail + sp->_topstolen + bottom_stolen) == slines);
756 if ((StdScreen(sp) = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx
757 sp->_lines_avail,
758 scolumns, 0, 0)) == 0) {
759 ReturnScreenError();
760 }
761 SET_LINES(sp->_lines_avail);
762 #if !USE_REENTRANT
763 stdscr = StdScreen(sp);
764 #endif
765 sp->_prescreen = FALSE;
766 returnCode(OK);
767 }
768
769 #if NCURSES_SP_FUNCS
770 NCURSES_EXPORT(int)
_nc_setupscreen(int slines GCC_UNUSED,int scolumns GCC_UNUSED,FILE * output,int filtered,int slk_format)771 _nc_setupscreen(int slines GCC_UNUSED,
772 int scolumns GCC_UNUSED,
773 FILE *output,
774 int filtered,
775 int slk_format)
776 {
777 SCREEN *sp = 0;
778 int rc = NCURSES_SP_NAME(_nc_setupscreen) (&sp,
779 slines,
780 scolumns,
781 output,
782 filtered,
783 slk_format);
784 if (rc != OK)
785 _nc_set_screen(0);
786 return rc;
787 }
788 #endif
789
790 /*
791 * The internal implementation interprets line as the number of lines to rip
792 * off from the top or bottom.
793 */
794 NCURSES_EXPORT(int)
NCURSES_SP_NAME(_nc_ripoffline)795 NCURSES_SP_NAME(_nc_ripoffline) (NCURSES_SP_DCLx
796 int line,
797 int (*init) (WINDOW *, int))
798 {
799 int code = ERR;
800 TR_FUNC_BFR(1);
801
802 START_TRACE();
803 T((T_CALLED("ripoffline(%p,%d,%s)"),
804 (void *) SP_PARM, line,
805 TR_FUNC_ARG(0, init)));
806
807 #if NCURSES_SP_FUNCS
808 if (SP_PARM != 0 && SP_PARM->_prescreen)
809 #endif
810 {
811 if (line == 0) {
812 code = OK;
813 } else {
814 if (safe_ripoff_sp == 0) {
815 safe_ripoff_sp = safe_ripoff_stack;
816 }
817 if (safe_ripoff_sp < safe_ripoff_stack + N_RIPS) {
818 safe_ripoff_sp->line = line;
819 safe_ripoff_sp->hook = init;
820 (safe_ripoff_sp)++;
821 T(("ripped-off %d:%d chunks",
822 (int) (safe_ripoff_sp - safe_ripoff_stack), N_RIPS));
823 code = OK;
824 }
825 }
826 }
827
828 returnCode(code);
829 }
830
831 #if NCURSES_SP_FUNCS
832 NCURSES_EXPORT(int)
_nc_ripoffline(int line,int (* init)(WINDOW *,int))833 _nc_ripoffline(int line, int (*init) (WINDOW *, int))
834 {
835 int rc;
836
837 _nc_init_pthreads();
838 _nc_lock_global(prescreen);
839 START_TRACE();
840 rc = NCURSES_SP_NAME(_nc_ripoffline) (CURRENT_SCREEN_PRE, line, init);
841 _nc_unlock_global(prescreen);
842
843 return rc;
844 }
845 #endif
846
847 NCURSES_EXPORT(int)
NCURSES_SP_NAME(ripoffline)848 NCURSES_SP_NAME(ripoffline) (NCURSES_SP_DCLx
849 int line,
850 int (*init) (WINDOW *, int))
851 {
852 START_TRACE();
853 return NCURSES_SP_NAME(_nc_ripoffline) (NCURSES_SP_ARGx
854 (line < 0) ? -1 : 1,
855 init);
856 }
857
858 #if NCURSES_SP_FUNCS
859 NCURSES_EXPORT(int)
ripoffline(int line,int (* init)(WINDOW *,int))860 ripoffline(int line, int (*init) (WINDOW *, int))
861 {
862 int rc;
863
864 _nc_init_pthreads();
865 _nc_lock_global(prescreen);
866 START_TRACE();
867 rc = NCURSES_SP_NAME(ripoffline) (CURRENT_SCREEN_PRE, line, init);
868 _nc_unlock_global(prescreen);
869
870 return rc;
871 }
872 #endif
873