1 /****************************************************************************
2 * Copyright 2018-2020,2021 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 #include <curses.priv.h>
45 #include <tic.h>
46
47 #if USE_GPM_SUPPORT
48 #ifdef HAVE_LIBDL
49 /* use dynamic loader to avoid linkage dependency */
50 #include <dlfcn.h>
51 #endif
52 #endif
53
54 #undef CUR
55 #define CUR SP_TERMTYPE
56
57 MODULE_ID("$Id: lib_set_term.c,v 1.179 2021/05/08 21:48:34 tom Exp $")
58
59 #ifdef USE_TERM_DRIVER
60 #define MaxColors InfoOf(sp).maxcolors
61 #define NumLabels InfoOf(sp).numlabels
62 #else
63 #define MaxColors max_colors
64 #define NumLabels num_labels
65 #endif
66
NCURSES_EXPORT(SCREEN *)67 NCURSES_EXPORT(SCREEN *)
68 set_term(SCREEN *screenp)
69 {
70 SCREEN *oldSP;
71 SCREEN *newSP;
72
73 T((T_CALLED("set_term(%p)"), (void *) screenp));
74
75 _nc_lock_global(curses);
76
77 oldSP = CURRENT_SCREEN;
78 _nc_set_screen(screenp);
79 newSP = screenp;
80
81 if (newSP != 0) {
82 TINFO_SET_CURTERM(newSP, newSP->_term);
83 #if !USE_REENTRANT
84 curscr = CurScreen(newSP);
85 newscr = NewScreen(newSP);
86 stdscr = StdScreen(newSP);
87 COLORS = newSP->_color_count;
88 COLOR_PAIRS = newSP->_pair_count;
89 #endif
90 } else {
91 TINFO_SET_CURTERM(oldSP, 0);
92 #if !USE_REENTRANT
93 curscr = 0;
94 newscr = 0;
95 stdscr = 0;
96 COLORS = 0;
97 COLOR_PAIRS = 0;
98 #endif
99 }
100
101 _nc_unlock_global(curses);
102
103 T((T_RETURN("%p"), (void *) oldSP));
104 return (oldSP);
105 }
106
107 static void
_nc_free_keytry(TRIES * kt)108 _nc_free_keytry(TRIES * kt)
109 {
110 if (kt != 0) {
111 _nc_free_keytry(kt->child);
112 _nc_free_keytry(kt->sibling);
113 free(kt);
114 }
115 }
116
117 static bool
delink_screen(SCREEN * sp)118 delink_screen(SCREEN *sp)
119 {
120 SCREEN *last = 0;
121 SCREEN *temp;
122 bool result = FALSE;
123
124 for (each_screen(temp)) {
125 if (temp == sp) {
126 if (last)
127 last->_next_screen = sp->_next_screen;
128 else
129 _nc_screen_chain = sp->_next_screen;
130 result = TRUE;
131 break;
132 }
133 last = temp;
134 }
135 return result;
136 }
137
138 /*
139 * Free the storage associated with the given SCREEN sp.
140 */
141 NCURSES_EXPORT(void)
delscreen(SCREEN * sp)142 delscreen(SCREEN *sp)
143 {
144
145 T((T_CALLED("delscreen(%p)"), (void *) sp));
146
147 _nc_lock_global(curses);
148 if (delink_screen(sp)) {
149 #ifdef USE_SP_RIPOFF
150 if (safe_ripoff_sp && safe_ripoff_sp != safe_ripoff_stack) {
151 ripoff_t *rop;
152 for (rop = safe_ripoff_stack;
153 rop != safe_ripoff_sp && (rop - safe_ripoff_stack) < N_RIPS;
154 rop++) {
155 if (rop->win) {
156 (void) delwin(rop->win);
157 rop->win = 0;
158 }
159 }
160 }
161 #endif
162
163 (void) _nc_freewin(CurScreen(sp));
164 (void) _nc_freewin(NewScreen(sp));
165 (void) _nc_freewin(StdScreen(sp));
166
167 if (sp->_slk != 0) {
168
169 if (sp->_slk->ent != 0) {
170 int i;
171
172 for (i = 0; i < sp->_slk->labcnt; ++i) {
173 FreeIfNeeded(sp->_slk->ent[i].ent_text);
174 FreeIfNeeded(sp->_slk->ent[i].form_text);
175 }
176 free(sp->_slk->ent);
177 }
178 free(sp->_slk);
179 sp->_slk = 0;
180 }
181
182 _nc_free_keytry(sp->_keytry);
183 sp->_keytry = 0;
184
185 _nc_free_keytry(sp->_key_ok);
186 sp->_key_ok = 0;
187
188 FreeIfNeeded(sp->_current_attr);
189
190 FreeIfNeeded(sp->_color_table);
191 FreeIfNeeded(sp->_color_pairs);
192
193 FreeIfNeeded(sp->_oldnum_list);
194 FreeIfNeeded(sp->oldhash);
195 FreeIfNeeded(sp->newhash);
196 FreeIfNeeded(sp->hashtab);
197
198 FreeIfNeeded(sp->_acs_map);
199 FreeIfNeeded(sp->_screen_acs_map);
200
201 NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG);
202 NCURSES_SP_NAME(del_curterm) (NCURSES_SP_ARGx sp->_term);
203 FreeIfNeeded(sp->out_buffer);
204 if (_nc_find_prescr() == sp) {
205 _nc_forget_prescr();
206 }
207 #if USE_GPM_SUPPORT
208 #ifdef HAVE_LIBDL
209 if (sp->_dlopen_gpm != 0) {
210 dlclose(sp->_dlopen_gpm);
211 sp->_dlopen_gpm = 0;
212 }
213 #endif
214 #endif /* USE_GPM_SUPPORT */
215 free(sp);
216
217 /*
218 * If this was the current screen, reset everything that the
219 * application might try to use (except cur_term, which may have
220 * multiple references in different screens).
221 */
222 if (sp == CURRENT_SCREEN) {
223 #if !USE_REENTRANT
224 curscr = 0;
225 newscr = 0;
226 stdscr = 0;
227 COLORS = 0;
228 COLOR_PAIRS = 0;
229 #endif
230 _nc_set_screen(0);
231 #if USE_WIDEC_SUPPORT
232 if (SP == 0) {
233 FreeIfNeeded(_nc_wacs);
234 _nc_wacs = 0;
235 }
236 #endif
237 }
238 }
239 _nc_unlock_global(curses);
240
241 returnVoid;
242 }
243
244 static bool
no_mouse_event(SCREEN * sp GCC_UNUSED)245 no_mouse_event(SCREEN *sp GCC_UNUSED)
246 {
247 return FALSE;
248 }
249
250 static bool
no_mouse_inline(SCREEN * sp GCC_UNUSED)251 no_mouse_inline(SCREEN *sp GCC_UNUSED)
252 {
253 return FALSE;
254 }
255
256 static bool
no_mouse_parse(SCREEN * sp GCC_UNUSED,int code GCC_UNUSED)257 no_mouse_parse(SCREEN *sp GCC_UNUSED, int code GCC_UNUSED)
258 {
259 return TRUE;
260 }
261
262 static void
no_mouse_resume(SCREEN * sp GCC_UNUSED)263 no_mouse_resume(SCREEN *sp GCC_UNUSED)
264 {
265 }
266
267 static void
no_mouse_wrap(SCREEN * sp GCC_UNUSED)268 no_mouse_wrap(SCREEN *sp GCC_UNUSED)
269 {
270 }
271
272 #if NCURSES_EXT_FUNCS && USE_COLORFGBG
273 static const char *
extract_fgbg(const char * src,int * result)274 extract_fgbg(const char *src, int *result)
275 {
276 const char *dst = 0;
277 char *tmp = 0;
278 long value = strtol(src, &tmp, 0);
279
280 if ((dst = tmp) == 0) {
281 dst = src;
282 } else if (value >= 0) {
283 *result = (int) value;
284 }
285 while (*dst != 0 && *dst != ';')
286 dst++;
287 if (*dst == ';')
288 dst++;
289 return dst;
290 }
291 #endif
292
293 #define ReturnScreenError() do { _nc_set_screen(0); \
294 returnCode(ERR); } while (0)
295
296 /* OS-independent screen initializations */
297 NCURSES_EXPORT(int)
NCURSES_SP_NAME(_nc_setupscreen)298 NCURSES_SP_NAME(_nc_setupscreen) (
299 #if NCURSES_SP_FUNCS
300 SCREEN **spp,
301 #endif
302 int slines,
303 int scolumns,
304 FILE *output,
305 int filtered,
306 int slk_format)
307 {
308 #ifndef USE_TERM_DRIVER
309 static const TTY null_TTY; /* all zeros iff uninitialized */
310 #endif
311 char *env;
312 int bottom_stolen = 0;
313 SCREEN *sp;
314 #ifndef USE_TERM_DRIVER
315 bool support_cookies = USE_XMC_SUPPORT;
316 #endif
317
318 T((T_CALLED("_nc_setupscreen(%d, %d, %p, %d, %d)"),
319 slines, scolumns, (void *) output, filtered, slk_format));
320
321 assert(CURRENT_SCREEN == 0); /* has been reset in newterm() ! */
322
323 #if NCURSES_SP_FUNCS
324 assert(spp != 0);
325 sp = *spp;
326
327 if (!sp) {
328 sp = _nc_alloc_screen_sp();
329 T(("_nc_alloc_screen_sp %p", (void *) sp));
330 *spp = sp;
331 }
332 if (sp == NULL) {
333 ReturnScreenError();
334 }
335 if ((sp->_acs_map = typeCalloc(chtype, ACS_LEN)) == NULL) {
336 ReturnScreenError();
337 }
338 if ((sp->_screen_acs_map = typeCalloc(bool, ACS_LEN)) == NULL) {
339 free(sp->_acs_map);
340 ReturnScreenError();
341 }
342
343 T(("created SP %p", (void *) sp));
344 sp->_next_screen = _nc_screen_chain;
345 _nc_screen_chain = sp;
346
347 if ((sp->_current_attr = typeCalloc(NCURSES_CH_T, 1)) == 0) {
348 ReturnScreenError();
349 }
350 #else
351 if (!_nc_alloc_screen()
352 || ((SP->_acs_map = typeCalloc(chtype, ACS_LEN)) == 0)
353 || ((SP->_screen_acs_map = typeCalloc(bool, ACS_LEN)) == 0)) {
354 returnCode(ERR);
355 }
356
357 T(("created SP %p", (void *) SP));
358
359 sp = SP; /* fixup so SET_LINES and SET_COLS works */
360 sp->_next_screen = _nc_screen_chain;
361 _nc_screen_chain = sp;
362
363 if ((sp->_current_attr = typeCalloc(NCURSES_CH_T, 1)) == 0) {
364 returnCode(ERR);
365 }
366 #endif
367
368 /*
369 * We should always check the screensize, just in case.
370 */
371 _nc_set_screen(sp);
372 sp->_term = cur_term;
373 #ifdef USE_TERM_DRIVER
374 TCBOf(sp)->csp = sp;
375 _nc_get_screensize(sp, sp->_term, &slines, &scolumns);
376 #else
377 _nc_get_screensize(sp, &slines, &scolumns);
378 #endif
379 SET_LINES(slines);
380 SET_COLS(scolumns);
381
382 T((T_CREATE("screen %s %dx%d"),
383 NCURSES_SP_NAME(termname) (NCURSES_SP_ARG), slines, scolumns));
384
385 sp->_filtered = filtered;
386
387 /* implement filter mode */
388 if (filtered) {
389 slines = 1;
390 SET_LINES(slines);
391 #ifdef USE_TERM_DRIVER
392 CallDriver(sp, td_setfilter);
393 #else
394 /* *INDENT-EQLS* */
395 clear_screen = ABSENT_STRING;
396 cursor_address = ABSENT_STRING;
397 cursor_down = ABSENT_STRING;
398 cursor_up = ABSENT_STRING;
399 parm_down_cursor = ABSENT_STRING;
400 parm_up_cursor = ABSENT_STRING;
401 row_address = ABSENT_STRING;
402 cursor_home = carriage_return;
403
404 if (back_color_erase)
405 clr_eos = ABSENT_STRING;
406
407 #endif
408 T(("filter screensize %dx%d", slines, scolumns));
409 }
410 #ifdef __DJGPP__
411 T(("setting output mode to binary"));
412 fflush(output);
413 setmode(output, O_BINARY);
414 #endif
415 #if defined(EXP_WIN32_DRIVER)
416 T(("setting output mode to binary"));
417 fflush(output);
418 _setmode(fileno(output), _O_BINARY);
419 #endif
420 sp->_lines = (NCURSES_SIZE_T) slines;
421 sp->_lines_avail = (NCURSES_SIZE_T) slines;
422 sp->_columns = (NCURSES_SIZE_T) scolumns;
423
424 fflush(output);
425 sp->_ofd = output ? fileno(output) : -1;
426 sp->_ofp = output;
427 #if defined(EXP_WIN32_DRIVER)
428 if (output)
429 _setmode(fileno(output), _O_BINARY);
430 #endif
431 sp->out_limit = (size_t) ((2 + slines) * (6 + scolumns));
432 if ((sp->out_buffer = malloc(sp->out_limit)) == 0)
433 sp->out_limit = 0;
434 sp->out_inuse = 0;
435
436 SP_PRE_INIT(sp);
437 SetNoPadding(sp);
438
439 #if NCURSES_EXT_FUNCS
440 sp->_default_color = FALSE;
441 sp->_has_sgr_39_49 = FALSE;
442
443 /*
444 * Set our assumption of the terminal's default foreground and background
445 * colors. The curs_color man-page states that we can assume that the
446 * background is black. The origin of this assumption appears to be
447 * terminals that displayed colored text, but no colored backgrounds, e.g.,
448 * the first colored terminals around 1980. More recent ones with better
449 * technology can display not only colored backgrounds, but all
450 * combinations. So a terminal might be something other than "white" on
451 * black (green/black looks monochrome too), but black on white or even
452 * on ivory.
453 *
454 * White-on-black is the simplest thing to use for monochrome. Almost
455 * all applications that use color paint both text and background, so
456 * the distinction is moot. But a few do not - which is why we leave this
457 * configurable (a better solution is to use assume_default_colors() for
458 * the rare applications that do require that sort of appearance, since
459 * is appears that more users expect to be able to make a white-on-black
460 * or black-on-white display under control of the application than not).
461 */
462 #ifdef USE_ASSUMED_COLOR
463 sp->_default_fg = COLOR_WHITE;
464 sp->_default_bg = COLOR_BLACK;
465 #else
466 sp->_default_fg = COLOR_DEFAULT;
467 sp->_default_bg = COLOR_DEFAULT;
468 #endif
469
470 /*
471 * Allow those assumed/default color assumptions to be overridden at
472 * runtime:
473 */
474 if ((env = getenv("NCURSES_ASSUMED_COLORS")) != 0) {
475 int fg, bg;
476 char sep1, sep2;
477 int count = sscanf(env, "%d%c%d%c", &fg, &sep1, &bg, &sep2);
478 if (count >= 1) {
479 sp->_default_fg = ((fg >= 0 && fg < MaxColors) ? fg : COLOR_DEFAULT);
480 if (count >= 3) {
481 sp->_default_bg = ((bg >= 0 && bg < MaxColors) ? bg : COLOR_DEFAULT);
482 }
483 TR(TRACE_CHARPUT | TRACE_MOVE,
484 ("from environment assumed fg=%d, bg=%d",
485 sp->_default_fg,
486 sp->_default_bg));
487 }
488 }
489 #if USE_COLORFGBG
490 /*
491 * If rxvt's $COLORFGBG variable is set, use it to specify the assumed
492 * default colors. Note that rxvt (mis)uses bold colors, equating a bold
493 * color to that value plus 8. We'll only use the non-bold color for now -
494 * decide later if it is worth having default attributes as well.
495 */
496 if (getenv("COLORFGBG") != 0) {
497 const char *p = getenv("COLORFGBG");
498 TR(TRACE_CHARPUT | TRACE_MOVE, ("decoding COLORFGBG %s", p));
499 p = extract_fgbg(p, &(sp->_default_fg));
500 p = extract_fgbg(p, &(sp->_default_bg));
501 if (*p) /* assume rxvt was compiled with xpm support */
502 extract_fgbg(p, &(sp->_default_bg));
503 TR(TRACE_CHARPUT | TRACE_MOVE, ("decoded fg=%d, bg=%d",
504 sp->_default_fg, sp->_default_bg));
505 if (sp->_default_fg >= MaxColors) {
506 if (set_a_foreground != ABSENT_STRING
507 && !strcmp(set_a_foreground, "\033[3%p1%dm")) {
508 set_a_foreground = strdup("\033[3%?%p1%{8}%>%t9%e%p1%d%;m");
509 } else {
510 sp->_default_fg %= MaxColors;
511 }
512 }
513 if (sp->_default_bg >= MaxColors) {
514 if (set_a_background != ABSENT_STRING
515 && !strcmp(set_a_background, "\033[4%p1%dm")) {
516 set_a_background = strdup("\033[4%?%p1%{8}%>%t9%e%p1%d%;m");
517 } else {
518 sp->_default_bg %= MaxColors;
519 }
520 }
521 }
522 #endif
523 #endif /* NCURSES_EXT_FUNCS */
524
525 sp->_maxclick = DEFAULT_MAXCLICK;
526 sp->_mouse_event = no_mouse_event;
527 sp->_mouse_inline = no_mouse_inline;
528 sp->_mouse_parse = no_mouse_parse;
529 sp->_mouse_resume = no_mouse_resume;
530 sp->_mouse_wrap = no_mouse_wrap;
531 sp->_mouse_fd = -1;
532
533 /*
534 * If we've no magic cookie support, we suppress attributes that xmc would
535 * affect, i.e., the attributes that affect the rendition of a space.
536 */
537 sp->_ok_attributes = NCURSES_SP_NAME(termattrs) (NCURSES_SP_ARG);
538 if (NCURSES_SP_NAME(has_colors) (NCURSES_SP_ARG)) {
539 sp->_ok_attributes |= A_COLOR;
540 }
541 #ifdef USE_TERM_DRIVER
542 _nc_cookie_init(sp);
543 #else
544 #if USE_XMC_SUPPORT
545 /*
546 * If we have no magic-cookie support compiled-in, or if it is suppressed
547 * in the environment, reset the support-flag.
548 */
549 if (magic_cookie_glitch >= 0) {
550 if (getenv("NCURSES_NO_MAGIC_COOKIE") != 0) {
551 support_cookies = FALSE;
552 }
553 }
554 #endif
555
556 if (!support_cookies && magic_cookie_glitch >= 0) {
557 T(("will disable attributes to work w/o magic cookies"));
558 }
559
560 if (magic_cookie_glitch > 0) { /* tvi, wyse */
561
562 sp->_xmc_triggers = sp->_ok_attributes & XMC_CONFLICT;
563 #if 0
564 /*
565 * We "should" treat colors as an attribute. The wyse350 (and its
566 * clones) appear to be the only ones that have both colors and magic
567 * cookies.
568 */
569 if (has_colors()) {
570 sp->_xmc_triggers |= A_COLOR;
571 }
572 #endif
573 sp->_xmc_suppress = sp->_xmc_triggers & (chtype) ~(A_BOLD);
574
575 T(("magic cookie attributes %s", _traceattr(sp->_xmc_suppress)));
576 /*
577 * Supporting line-drawing may be possible. But make the regular
578 * video attributes work first.
579 */
580 acs_chars = ABSENT_STRING;
581 ena_acs = ABSENT_STRING;
582 enter_alt_charset_mode = ABSENT_STRING;
583 exit_alt_charset_mode = ABSENT_STRING;
584 #if USE_XMC_SUPPORT
585 /*
586 * To keep the cookie support simple, suppress all of the optimization
587 * hooks except for clear_screen and the cursor addressing.
588 */
589 if (support_cookies) {
590 clr_eol = ABSENT_STRING;
591 clr_eos = ABSENT_STRING;
592 set_attributes = ABSENT_STRING;
593 }
594 #endif
595 } else if (magic_cookie_glitch == 0) { /* hpterm */
596 }
597
598 /*
599 * If magic cookies are not supported, cancel the strings that set
600 * video attributes.
601 */
602 if (!support_cookies && magic_cookie_glitch >= 0) {
603 magic_cookie_glitch = ABSENT_NUMERIC;
604 set_attributes = ABSENT_STRING;
605 enter_blink_mode = ABSENT_STRING;
606 enter_bold_mode = ABSENT_STRING;
607 enter_dim_mode = ABSENT_STRING;
608 enter_reverse_mode = ABSENT_STRING;
609 enter_standout_mode = ABSENT_STRING;
610 enter_underline_mode = ABSENT_STRING;
611 }
612
613 /* initialize normal acs before wide, since we use mapping in the latter */
614 #if !USE_WIDEC_SUPPORT
615 if (_nc_unicode_locale() && _nc_locale_breaks_acs(sp->_term)) {
616 acs_chars = NULL;
617 ena_acs = NULL;
618 enter_alt_charset_mode = NULL;
619 exit_alt_charset_mode = NULL;
620 set_attributes = NULL;
621 }
622 #endif
623 #endif
624
625 NCURSES_SP_NAME(_nc_init_acs) (NCURSES_SP_ARG);
626 #if USE_WIDEC_SUPPORT
627 sp->_screen_unicode = _nc_unicode_locale();
628 if (_nc_wacs == 0) {
629 _nc_init_wacs();
630 }
631 if (_nc_wacs == 0) {
632 ReturnScreenError();
633 }
634
635 sp->_screen_acs_fix = (sp->_screen_unicode
636 && _nc_locale_breaks_acs(sp->_term));
637 #endif
638 env = _nc_get_locale();
639 sp->_legacy_coding = ((env == 0)
640 || !strcmp(env, "C")
641 || !strcmp(env, "POSIX"));
642 T(("legacy-coding %d", sp->_legacy_coding));
643
644 sp->_nc_sp_idcok = TRUE;
645 sp->_nc_sp_idlok = FALSE;
646
647 sp->oldhash = 0;
648 sp->newhash = 0;
649
650 T(("creating newscr"));
651 NewScreen(sp) = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx slines, scolumns,
652 0, 0);
653 if (NewScreen(sp) == 0) {
654 ReturnScreenError();
655 }
656 T(("creating curscr"));
657 CurScreen(sp) = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx slines, scolumns,
658 0, 0);
659 if (CurScreen(sp) == 0) {
660 ReturnScreenError();
661 }
662 #if !USE_REENTRANT
663 newscr = NewScreen(sp);
664 curscr = CurScreen(sp);
665 #endif
666 #if USE_SIZECHANGE
667 sp->_resize = NCURSES_SP_NAME(resizeterm);
668 sp->_ungetch = safe_ungetch;
669 #endif
670
671 NewScreen(sp)->_clear = TRUE;
672 CurScreen(sp)->_clear = FALSE;
673
674 /*
675 * Get the current tty-modes. setupterm() may already have done this,
676 * unless we use the term-driver.
677 */
678 #ifndef USE_TERM_DRIVER
679 if (cur_term != 0 &&
680 !memcmp(&cur_term->Ottyb, &null_TTY, sizeof(TTY)))
681 #endif
682 {
683 NCURSES_SP_NAME(def_shell_mode) (NCURSES_SP_ARG);
684 NCURSES_SP_NAME(def_prog_mode) (NCURSES_SP_ARG);
685 }
686
687 if (safe_ripoff_sp && safe_ripoff_sp != safe_ripoff_stack) {
688 ripoff_t *rop;
689
690 for (rop = safe_ripoff_stack;
691 rop != safe_ripoff_sp && (rop - safe_ripoff_stack) < N_RIPS;
692 rop++) {
693
694 /* If we must simulate soft labels, grab off the line to be used.
695 We assume that we must simulate, if it is none of the standard
696 formats (4-4 or 3-2-3) for which there may be some hardware
697 support. */
698 if (rop->hook == _nc_slk_initialize) {
699 if (!TerminalOf(sp)) {
700 continue;
701 }
702 if (!(NumLabels <= 0 || !SLK_STDFMT(slk_format))) {
703 continue;
704 }
705 }
706 if (rop->hook) {
707 int count;
708 WINDOW *w;
709
710 count = (rop->line < 0) ? -rop->line : rop->line;
711 T(("ripping off %i lines at %s", count,
712 ((rop->line < 0)
713 ? "bottom"
714 : "top")));
715
716 w = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx
717 count, scolumns,
718 ((rop->line < 0)
719 ? sp->_lines_avail - count
720 : 0),
721 0);
722 if (w) {
723 rop->win = w;
724 rop->hook(w, scolumns);
725 } else {
726 ReturnScreenError();
727 }
728 if (rop->line < 0) {
729 bottom_stolen += count;
730 } else {
731 sp->_topstolen = (NCURSES_SIZE_T) (sp->_topstolen + count);
732 }
733 sp->_lines_avail = (NCURSES_SIZE_T) (sp->_lines_avail - count);
734 }
735 }
736 /* reset the stack */
737 safe_ripoff_sp = safe_ripoff_stack;
738 }
739
740 T(("creating stdscr"));
741 assert((sp->_lines_avail + sp->_topstolen + bottom_stolen) == slines);
742 if ((StdScreen(sp) = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx
743 sp->_lines_avail,
744 scolumns, 0, 0)) == 0) {
745 ReturnScreenError();
746 }
747 SET_LINES(sp->_lines_avail);
748 #if !USE_REENTRANT
749 stdscr = StdScreen(sp);
750 #endif
751 sp->_prescreen = FALSE;
752 returnCode(OK);
753 }
754
755 #if NCURSES_SP_FUNCS
756 NCURSES_EXPORT(int)
_nc_setupscreen(int slines GCC_UNUSED,int scolumns GCC_UNUSED,FILE * output,int filtered,int slk_format)757 _nc_setupscreen(int slines GCC_UNUSED,
758 int scolumns GCC_UNUSED,
759 FILE *output,
760 int filtered,
761 int slk_format)
762 {
763 SCREEN *sp = 0;
764 int rc = NCURSES_SP_NAME(_nc_setupscreen) (&sp,
765 slines,
766 scolumns,
767 output,
768 filtered,
769 slk_format);
770 if (rc != OK)
771 _nc_set_screen(0);
772 return rc;
773 }
774 #endif
775
776 /*
777 * The internal implementation interprets line as the number of lines to rip
778 * off from the top or bottom.
779 */
780 NCURSES_EXPORT(int)
NCURSES_SP_NAME(_nc_ripoffline)781 NCURSES_SP_NAME(_nc_ripoffline) (NCURSES_SP_DCLx
782 int line,
783 int (*init) (WINDOW *, int))
784 {
785 int code = ERR;
786 TR_FUNC_BFR(1);
787
788 START_TRACE();
789 T((T_CALLED("ripoffline(%p,%d,%s)"),
790 (void *) SP_PARM, line,
791 TR_FUNC_ARG(0, init)));
792
793 #if NCURSES_SP_FUNCS
794 if (SP_PARM != 0 && SP_PARM->_prescreen)
795 #endif
796 {
797 if (line == 0) {
798 code = OK;
799 } else {
800 if (safe_ripoff_sp == 0) {
801 safe_ripoff_sp = safe_ripoff_stack;
802 }
803 if (safe_ripoff_sp < safe_ripoff_stack + N_RIPS) {
804 safe_ripoff_sp->line = line;
805 safe_ripoff_sp->hook = init;
806 (safe_ripoff_sp)++;
807 T(("ripped-off %d:%d chunks",
808 (int) (safe_ripoff_sp - safe_ripoff_stack), N_RIPS));
809 code = OK;
810 }
811 }
812 }
813
814 returnCode(code);
815 }
816
817 #if NCURSES_SP_FUNCS
818 NCURSES_EXPORT(int)
_nc_ripoffline(int line,int (* init)(WINDOW *,int))819 _nc_ripoffline(int line, int (*init) (WINDOW *, int))
820 {
821 int rc;
822 _nc_lock_global(prescreen);
823 START_TRACE();
824 rc = NCURSES_SP_NAME(_nc_ripoffline) (CURRENT_SCREEN_PRE, line, init);
825 _nc_unlock_global(prescreen);
826 return rc;
827 }
828 #endif
829
830 NCURSES_EXPORT(int)
NCURSES_SP_NAME(ripoffline)831 NCURSES_SP_NAME(ripoffline) (NCURSES_SP_DCLx
832 int line,
833 int (*init) (WINDOW *, int))
834 {
835 START_TRACE();
836 return NCURSES_SP_NAME(_nc_ripoffline) (NCURSES_SP_ARGx
837 (line < 0) ? -1 : 1,
838 init);
839 }
840
841 #if NCURSES_SP_FUNCS
842 NCURSES_EXPORT(int)
ripoffline(int line,int (* init)(WINDOW *,int))843 ripoffline(int line, int (*init) (WINDOW *, int))
844 {
845 int rc;
846 _nc_lock_global(prescreen);
847 START_TRACE();
848 rc = NCURSES_SP_NAME(ripoffline) (CURRENT_SCREEN_PRE, line, init);
849 _nc_unlock_global(prescreen);
850 return rc;
851 }
852 #endif
853