1 /****************************************************************************
2 * Copyright (c) 1998-2012,2013 Free Software Foundation, Inc. *
3 * *
4 * Permission is hereby granted, free of charge, to any person obtaining a *
5 * copy of this software and associated documentation files (the *
6 * "Software"), to deal in the Software without restriction, including *
7 * without limitation the rights to use, copy, modify, merge, publish, *
8 * distribute, distribute with modifications, sublicense, and/or sell *
9 * copies of the Software, and to permit persons to whom the Software is *
10 * furnished to do so, subject to the following conditions: *
11 * *
12 * The above copyright notice and this permission notice shall be included *
13 * in all copies or substantial portions of the Software. *
14 * *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
16 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
18 * IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
19 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
20 * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
21 * THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
22 * *
23 * Except as contained in this notice, the name(s) of the above copyright *
24 * holders shall not be used in advertising or otherwise to promote the *
25 * sale, use or other dealings in this Software without prior written *
26 * authorization. *
27 ****************************************************************************/
28
29 /****************************************************************************
30 * Author: Zeyd M. Ben-Halim <[email protected]> 1992,1995 *
31 * and: Eric S. Raymond <[email protected]> *
32 * and: Thomas E. Dickey 1996-on *
33 * and: Juergen Pfeifer 2009 *
34 ****************************************************************************/
35
36 /*
37 ** lib_set_term.c
38 **
39 ** The routine set_term().
40 **
41 */
42
43 #include <curses.priv.h>
44 #include <tic.h>
45
46 #ifndef CUR
47 #define CUR SP_TERMTYPE
48 #endif
49
50 MODULE_ID("$Id: lib_set_term.c,v 1.148 2013/08/31 13:33:06 tom Exp $")
51
52 #ifdef USE_TERM_DRIVER
53 #define MaxColors InfoOf(sp).maxcolors
54 #define NumLabels InfoOf(sp).numlabels
55 #else
56 #define MaxColors max_colors
57 #define NumLabels num_labels
58 #endif
59
NCURSES_EXPORT(SCREEN *)60 NCURSES_EXPORT(SCREEN *)
61 set_term(SCREEN *screenp)
62 {
63 SCREEN *oldSP;
64 SCREEN *newSP;
65
66 T((T_CALLED("set_term(%p)"), (void *) screenp));
67
68 _nc_lock_global(curses);
69
70 oldSP = CURRENT_SCREEN;
71 _nc_set_screen(screenp);
72 newSP = screenp;
73
74 if (newSP != 0) {
75 TINFO_SET_CURTERM(newSP, newSP->_term);
76 #if !USE_REENTRANT
77 curscr = CurScreen(newSP);
78 newscr = NewScreen(newSP);
79 stdscr = StdScreen(newSP);
80 COLORS = newSP->_color_count;
81 COLOR_PAIRS = newSP->_pair_count;
82 #endif
83 } else {
84 TINFO_SET_CURTERM(oldSP, 0);
85 #if !USE_REENTRANT
86 curscr = 0;
87 newscr = 0;
88 stdscr = 0;
89 COLORS = 0;
90 COLOR_PAIRS = 0;
91 #endif
92 }
93
94 _nc_unlock_global(curses);
95
96 T((T_RETURN("%p"), (void *) oldSP));
97 return (oldSP);
98 }
99
100 static void
_nc_free_keytry(TRIES * kt)101 _nc_free_keytry(TRIES * kt)
102 {
103 if (kt != 0) {
104 _nc_free_keytry(kt->child);
105 _nc_free_keytry(kt->sibling);
106 free(kt);
107 }
108 }
109
110 static bool
delink_screen(SCREEN * sp)111 delink_screen(SCREEN *sp)
112 {
113 SCREEN *last = 0;
114 SCREEN *temp;
115 bool result = FALSE;
116
117 for (each_screen(temp)) {
118 if (temp == sp) {
119 if (last)
120 last->_next_screen = sp->_next_screen;
121 else
122 _nc_screen_chain = sp->_next_screen;
123 result = TRUE;
124 break;
125 }
126 last = temp;
127 }
128 return result;
129 }
130
131 /*
132 * Free the storage associated with the given SCREEN sp.
133 */
134 NCURSES_EXPORT(void)
delscreen(SCREEN * sp)135 delscreen(SCREEN *sp)
136 {
137 int i;
138
139 T((T_CALLED("delscreen(%p)"), (void *) sp));
140
141 _nc_lock_global(curses);
142 if (delink_screen(sp)) {
143 #ifdef USE_SP_RIPOFF
144 ripoff_t *rop;
145 if (safe_ripoff_sp && safe_ripoff_sp != safe_ripoff_stack) {
146 for (rop = safe_ripoff_stack;
147 rop != safe_ripoff_sp && (rop - safe_ripoff_stack) < N_RIPS;
148 rop++) {
149 if (rop->win) {
150 (void) delwin(rop->win);
151 rop->win = 0;
152 }
153 }
154 }
155 #endif
156
157 (void) _nc_freewin(CurScreen(sp));
158 (void) _nc_freewin(NewScreen(sp));
159 (void) _nc_freewin(StdScreen(sp));
160
161 if (sp->_slk != 0) {
162 if (sp->_slk->ent != 0) {
163 for (i = 0; i < sp->_slk->labcnt; ++i) {
164 FreeIfNeeded(sp->_slk->ent[i].ent_text);
165 FreeIfNeeded(sp->_slk->ent[i].form_text);
166 }
167 free(sp->_slk->ent);
168 }
169 free(sp->_slk);
170 sp->_slk = 0;
171 }
172
173 _nc_free_keytry(sp->_keytry);
174 sp->_keytry = 0;
175
176 _nc_free_keytry(sp->_key_ok);
177 sp->_key_ok = 0;
178
179 FreeIfNeeded(sp->_current_attr);
180
181 FreeIfNeeded(sp->_color_table);
182 FreeIfNeeded(sp->_color_pairs);
183
184 FreeIfNeeded(sp->oldhash);
185 FreeIfNeeded(sp->newhash);
186 FreeIfNeeded(sp->hashtab);
187
188 FreeIfNeeded(sp->_acs_map);
189 FreeIfNeeded(sp->_screen_acs_map);
190
191 NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG);
192 NCURSES_SP_NAME(del_curterm) (NCURSES_SP_ARGx sp->_term);
193 free(sp);
194
195 /*
196 * If this was the current screen, reset everything that the
197 * application might try to use (except cur_term, which may have
198 * multiple references in different screens).
199 */
200 if (sp == CURRENT_SCREEN) {
201 #if !USE_REENTRANT
202 curscr = 0;
203 newscr = 0;
204 stdscr = 0;
205 COLORS = 0;
206 COLOR_PAIRS = 0;
207 #endif
208 _nc_set_screen(0);
209 }
210 }
211 _nc_unlock_global(curses);
212
213 returnVoid;
214 }
215
216 static bool
no_mouse_event(SCREEN * sp GCC_UNUSED)217 no_mouse_event(SCREEN *sp GCC_UNUSED)
218 {
219 return FALSE;
220 }
221
222 static bool
no_mouse_inline(SCREEN * sp GCC_UNUSED)223 no_mouse_inline(SCREEN *sp GCC_UNUSED)
224 {
225 return FALSE;
226 }
227
228 static bool
no_mouse_parse(SCREEN * sp GCC_UNUSED,int code GCC_UNUSED)229 no_mouse_parse(SCREEN *sp GCC_UNUSED, int code GCC_UNUSED)
230 {
231 return TRUE;
232 }
233
234 static void
no_mouse_resume(SCREEN * sp GCC_UNUSED)235 no_mouse_resume(SCREEN *sp GCC_UNUSED)
236 {
237 }
238
239 static void
no_mouse_wrap(SCREEN * sp GCC_UNUSED)240 no_mouse_wrap(SCREEN *sp GCC_UNUSED)
241 {
242 }
243
244 #if NCURSES_EXT_FUNCS && USE_COLORFGBG
245 static char *
extract_fgbg(char * src,int * result)246 extract_fgbg(char *src, int *result)
247 {
248 char *dst = 0;
249 long value = strtol(src, &dst, 0);
250
251 if (dst == 0) {
252 dst = src;
253 } else if (value >= 0) {
254 *result = value;
255 }
256 while (*dst != 0 && *dst != ';')
257 dst++;
258 if (*dst == ';')
259 dst++;
260 return dst;
261 }
262 #endif
263
264 #define ReturnScreenError() { _nc_set_screen(0); \
265 returnCode(ERR); } while (0)
266
267 /* OS-independent screen initializations */
268 NCURSES_EXPORT(int)
NCURSES_SP_NAME(_nc_setupscreen)269 NCURSES_SP_NAME(_nc_setupscreen) (
270 #if NCURSES_SP_FUNCS
271 SCREEN **spp,
272 #endif
273 int slines,
274 int scolumns,
275 FILE *output,
276 int filtered,
277 int slk_format)
278 {
279 char *env;
280 int bottom_stolen = 0;
281 ripoff_t *rop;
282 SCREEN *sp;
283 #ifndef USE_TERM_DRIVER
284 bool support_cookies = USE_XMC_SUPPORT;
285 #endif
286
287 T((T_CALLED("_nc_setupscreen(%d, %d, %p, %d, %d)"),
288 slines, scolumns, (void *) output, filtered, slk_format));
289
290 assert(CURRENT_SCREEN == 0); /* has been reset in newterm() ! */
291
292 #if NCURSES_SP_FUNCS
293 assert(spp != 0);
294 sp = *spp;
295
296 if (!sp) {
297 sp = _nc_alloc_screen_sp();
298 *spp = sp;
299 }
300 if (!sp
301 || ((sp->_acs_map = typeCalloc(chtype, ACS_LEN)) == 0)
302 || ((sp->_screen_acs_map = typeCalloc(bool, ACS_LEN)) == 0)) {
303 ReturnScreenError();
304 }
305
306 T(("created SP %p", (void *) sp));
307 sp->_next_screen = _nc_screen_chain;
308 _nc_screen_chain = sp;
309
310 if ((sp->_current_attr = typeCalloc(NCURSES_CH_T, 1)) == 0) {
311 ReturnScreenError();
312 }
313 #else
314 if (!_nc_alloc_screen()
315 || ((SP->_acs_map = typeCalloc(chtype, ACS_LEN)) == 0)
316 || ((SP->_screen_acs_map = typeCalloc(bool, ACS_LEN)) == 0)) {
317 returnCode(ERR);
318 }
319
320 T(("created SP %p", (void *) SP));
321
322 sp = SP; /* fixup so SET_LINES and SET_COLS works */
323 sp->_next_screen = _nc_screen_chain;
324 _nc_screen_chain = sp;
325
326 if ((sp->_current_attr = typeCalloc(NCURSES_CH_T, 1)) == 0)
327 returnCode(ERR);
328 #endif
329
330 /*
331 * We should always check the screensize, just in case.
332 */
333 _nc_set_screen(sp);
334 sp->_term = cur_term;
335 #ifdef USE_TERM_DRIVER
336 TCBOf(sp)->csp = sp;
337 _nc_get_screensize(sp, sp->_term, &slines, &scolumns);
338 #else
339 _nc_get_screensize(sp, &slines, &scolumns);
340 #endif
341 SET_LINES(slines);
342 SET_COLS(scolumns);
343
344 T((T_CREATE("screen %s %dx%d"),
345 NCURSES_SP_NAME(termname) (NCURSES_SP_ARG), slines, scolumns));
346
347 sp->_filtered = filtered;
348
349 /* implement filter mode */
350 if (filtered) {
351 slines = 1;
352 SET_LINES(slines);
353 #ifdef USE_TERM_DRIVER
354 CallDriver(sp, setfilter);
355 #else
356 clear_screen = 0;
357 cursor_down = parm_down_cursor = 0;
358 cursor_address = 0;
359 cursor_up = parm_up_cursor = 0;
360 row_address = 0;
361
362 cursor_home = carriage_return;
363 #endif
364 T(("filter screensize %dx%d", slines, scolumns));
365 }
366 #ifdef __DJGPP__
367 T(("setting output mode to binary"));
368 fflush(output);
369 setmode(output, O_BINARY);
370 #endif
371 NCURSES_SP_NAME(_nc_set_buffer) (NCURSES_SP_ARGx output, TRUE);
372 sp->_lines = (NCURSES_SIZE_T) slines;
373 sp->_lines_avail = (NCURSES_SIZE_T) slines;
374 sp->_columns = (NCURSES_SIZE_T) scolumns;
375
376 fflush(output);
377 sp->_ofd = output ? fileno(output) : -1;
378 sp->_ofp = output;
379 sp->out_limit = (size_t) ((2 + slines) * (6 + scolumns));
380 if ((sp->out_buffer = malloc(sp->out_limit)) == 0)
381 sp->out_limit = 0;
382 sp->out_inuse = 0;
383
384 SP_PRE_INIT(sp);
385 SetNoPadding(sp);
386
387 #if NCURSES_EXT_FUNCS
388 sp->_default_color = FALSE;
389 sp->_has_sgr_39_49 = FALSE;
390
391 /*
392 * Set our assumption of the terminal's default foreground and background
393 * colors. The curs_color man-page states that we can assume that the
394 * background is black. The origin of this assumption appears to be
395 * terminals that displayed colored text, but no colored backgrounds, e.g.,
396 * the first colored terminals around 1980. More recent ones with better
397 * technology can display not only colored backgrounds, but all
398 * combinations. So a terminal might be something other than "white" on
399 * black (green/black looks monochrome too), but black on white or even
400 * on ivory.
401 *
402 * White-on-black is the simplest thing to use for monochrome. Almost
403 * all applications that use color paint both text and background, so
404 * the distinction is moot. But a few do not - which is why we leave this
405 * configurable (a better solution is to use assume_default_colors() for
406 * the rare applications that do require that sort of appearance, since
407 * is appears that more users expect to be able to make a white-on-black
408 * or black-on-white display under control of the application than not).
409 */
410 #ifdef USE_ASSUMED_COLOR
411 sp->_default_fg = COLOR_WHITE;
412 sp->_default_bg = COLOR_BLACK;
413 #else
414 sp->_default_fg = C_MASK;
415 sp->_default_bg = C_MASK;
416 #endif
417
418 /*
419 * Allow those assumed/default color assumptions to be overridden at
420 * runtime:
421 */
422 if ((env = getenv("NCURSES_ASSUMED_COLORS")) != 0) {
423 int fg, bg;
424 char sep1, sep2;
425 int count = sscanf(env, "%d%c%d%c", &fg, &sep1, &bg, &sep2);
426 if (count >= 1) {
427 sp->_default_fg = ((fg >= 0 && fg < MaxColors) ? fg : C_MASK);
428 if (count >= 3) {
429 sp->_default_bg = ((bg >= 0 && bg < MaxColors) ? bg : C_MASK);
430 }
431 TR(TRACE_CHARPUT | TRACE_MOVE,
432 ("from environment assumed fg=%d, bg=%d",
433 sp->_default_fg,
434 sp->_default_bg));
435 }
436 }
437 #if USE_COLORFGBG
438 /*
439 * If rxvt's $COLORFGBG variable is set, use it to specify the assumed
440 * default colors. Note that rxvt (mis)uses bold colors, equating a bold
441 * color to that value plus 8. We'll only use the non-bold color for now -
442 * decide later if it is worth having default attributes as well.
443 */
444 if (getenv("COLORFGBG") != 0) {
445 char *p = getenv("COLORFGBG");
446 TR(TRACE_CHARPUT | TRACE_MOVE, ("decoding COLORFGBG %s", p));
447 p = extract_fgbg(p, &(sp->_default_fg));
448 p = extract_fgbg(p, &(sp->_default_bg));
449 if (*p) /* assume rxvt was compiled with xpm support */
450 p = extract_fgbg(p, &(sp->_default_bg));
451 TR(TRACE_CHARPUT | TRACE_MOVE, ("decoded fg=%d, bg=%d",
452 sp->_default_fg, sp->_default_bg));
453 if (sp->_default_fg >= MaxColors) {
454 if (set_a_foreground != ABSENT_STRING
455 && !strcmp(set_a_foreground, "\033[3%p1%dm")) {
456 set_a_foreground = "\033[3%?%p1%{8}%>%t9%e%p1%d%;m";
457 } else {
458 sp->_default_fg %= MaxColors;
459 }
460 }
461 if (sp->_default_bg >= MaxColors) {
462 if (set_a_background != ABSENT_STRING
463 && !strcmp(set_a_background, "\033[4%p1%dm")) {
464 set_a_background = "\033[4%?%p1%{8}%>%t9%e%p1%d%;m";
465 } else {
466 sp->_default_bg %= MaxColors;
467 }
468 }
469 }
470 #endif
471 #endif /* NCURSES_EXT_FUNCS */
472
473 sp->_maxclick = DEFAULT_MAXCLICK;
474 sp->_mouse_event = no_mouse_event;
475 sp->_mouse_inline = no_mouse_inline;
476 sp->_mouse_parse = no_mouse_parse;
477 sp->_mouse_resume = no_mouse_resume;
478 sp->_mouse_wrap = no_mouse_wrap;
479 sp->_mouse_fd = -1;
480
481 /*
482 * If we've no magic cookie support, we suppress attributes that xmc would
483 * affect, i.e., the attributes that affect the rendition of a space.
484 */
485 sp->_ok_attributes = NCURSES_SP_NAME(termattrs) (NCURSES_SP_ARG);
486 if (NCURSES_SP_NAME(has_colors) (NCURSES_SP_ARG)) {
487 sp->_ok_attributes |= A_COLOR;
488 }
489 #ifdef USE_TERM_DRIVER
490 _nc_cookie_init(sp);
491 #else
492 #if USE_XMC_SUPPORT
493 /*
494 * If we have no magic-cookie support compiled-in, or if it is suppressed
495 * in the environment, reset the support-flag.
496 */
497 if (magic_cookie_glitch >= 0) {
498 if (getenv("NCURSES_NO_MAGIC_COOKIE") != 0) {
499 support_cookies = FALSE;
500 }
501 }
502 #endif
503
504 if (!support_cookies && magic_cookie_glitch >= 0) {
505 T(("will disable attributes to work w/o magic cookies"));
506 }
507
508 if (magic_cookie_glitch > 0) { /* tvi, wyse */
509
510 sp->_xmc_triggers = sp->_ok_attributes & XMC_CONFLICT;
511 #if 0
512 /*
513 * We "should" treat colors as an attribute. The wyse350 (and its
514 * clones) appear to be the only ones that have both colors and magic
515 * cookies.
516 */
517 if (has_colors()) {
518 sp->_xmc_triggers |= A_COLOR;
519 }
520 #endif
521 sp->_xmc_suppress = sp->_xmc_triggers & (chtype) ~(A_BOLD);
522
523 T(("magic cookie attributes %s", _traceattr(sp->_xmc_suppress)));
524 /*
525 * Supporting line-drawing may be possible. But make the regular
526 * video attributes work first.
527 */
528 acs_chars = ABSENT_STRING;
529 ena_acs = ABSENT_STRING;
530 enter_alt_charset_mode = ABSENT_STRING;
531 exit_alt_charset_mode = ABSENT_STRING;
532 #if USE_XMC_SUPPORT
533 /*
534 * To keep the cookie support simple, suppress all of the optimization
535 * hooks except for clear_screen and the cursor addressing.
536 */
537 if (support_cookies) {
538 clr_eol = ABSENT_STRING;
539 clr_eos = ABSENT_STRING;
540 set_attributes = ABSENT_STRING;
541 }
542 #endif
543 } else if (magic_cookie_glitch == 0) { /* hpterm */
544 }
545
546 /*
547 * If magic cookies are not supported, cancel the strings that set
548 * video attributes.
549 */
550 if (!support_cookies && magic_cookie_glitch >= 0) {
551 magic_cookie_glitch = ABSENT_NUMERIC;
552 set_attributes = ABSENT_STRING;
553 enter_blink_mode = ABSENT_STRING;
554 enter_bold_mode = ABSENT_STRING;
555 enter_dim_mode = ABSENT_STRING;
556 enter_reverse_mode = ABSENT_STRING;
557 enter_standout_mode = ABSENT_STRING;
558 enter_underline_mode = ABSENT_STRING;
559 }
560
561 /* initialize normal acs before wide, since we use mapping in the latter */
562 #if !USE_WIDEC_SUPPORT
563 if (_nc_unicode_locale() && _nc_locale_breaks_acs(sp->_term)) {
564 acs_chars = NULL;
565 ena_acs = NULL;
566 enter_alt_charset_mode = NULL;
567 exit_alt_charset_mode = NULL;
568 set_attributes = NULL;
569 }
570 #endif
571 #endif
572
573 NCURSES_SP_NAME(_nc_init_acs) (NCURSES_SP_ARG);
574 #if USE_WIDEC_SUPPORT
575 sp->_screen_unicode = _nc_unicode_locale();
576 _nc_init_wacs();
577 if (_nc_wacs == 0) {
578 ReturnScreenError();
579 }
580
581 sp->_screen_acs_fix = (sp->_screen_unicode
582 && _nc_locale_breaks_acs(sp->_term));
583 #endif
584 env = _nc_get_locale();
585 sp->_legacy_coding = ((env == 0)
586 || !strcmp(env, "C")
587 || !strcmp(env, "POSIX"));
588 T(("legacy-coding %d", sp->_legacy_coding));
589
590 sp->_nc_sp_idcok = TRUE;
591 sp->_nc_sp_idlok = FALSE;
592
593 sp->oldhash = 0;
594 sp->newhash = 0;
595
596 T(("creating newscr"));
597 NewScreen(sp) = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx slines, scolumns,
598 0, 0);
599 if (NewScreen(sp) == 0) {
600 ReturnScreenError();
601 }
602 T(("creating curscr"));
603 CurScreen(sp) = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx slines, scolumns,
604 0, 0);
605 if (CurScreen(sp) == 0) {
606 ReturnScreenError();
607 }
608 #if !USE_REENTRANT
609 newscr = NewScreen(sp);
610 curscr = CurScreen(sp);
611 #endif
612 #if USE_SIZECHANGE
613 sp->_resize = NCURSES_SP_NAME(resizeterm);
614 sp->_ungetch = safe_ungetch;
615 #endif
616
617 NewScreen(sp)->_clear = TRUE;
618 CurScreen(sp)->_clear = FALSE;
619
620 NCURSES_SP_NAME(def_shell_mode) (NCURSES_SP_ARG);
621 NCURSES_SP_NAME(def_prog_mode) (NCURSES_SP_ARG);
622
623 if (safe_ripoff_sp && safe_ripoff_sp != safe_ripoff_stack) {
624 for (rop = safe_ripoff_stack;
625 rop != safe_ripoff_sp && (rop - safe_ripoff_stack) < N_RIPS;
626 rop++) {
627
628 /* If we must simulate soft labels, grab off the line to be used.
629 We assume that we must simulate, if it is none of the standard
630 formats (4-4 or 3-2-3) for which there may be some hardware
631 support. */
632 if (rop->hook == _nc_slk_initialize) {
633 if (!(NumLabels <= 0 || !SLK_STDFMT(slk_format))) {
634 continue;
635 }
636 }
637 if (rop->hook) {
638 int count;
639 WINDOW *w;
640
641 count = (rop->line < 0) ? -rop->line : rop->line;
642 T(("ripping off %i lines at %s", count,
643 ((rop->line < 0)
644 ? "bottom"
645 : "top")));
646
647 w = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx
648 count, scolumns,
649 ((rop->line < 0)
650 ? sp->_lines_avail - count
651 : 0),
652 0);
653 if (w) {
654 rop->win = w;
655 rop->hook(w, scolumns);
656 } else {
657 ReturnScreenError();
658 }
659 if (rop->line < 0) {
660 bottom_stolen += count;
661 } else {
662 sp->_topstolen = (NCURSES_SIZE_T) (sp->_topstolen + count);
663 }
664 sp->_lines_avail = (NCURSES_SIZE_T) (sp->_lines_avail - count);
665 }
666 }
667 /* reset the stack */
668 safe_ripoff_sp = safe_ripoff_stack;
669 }
670
671 T(("creating stdscr"));
672 assert((sp->_lines_avail + sp->_topstolen + bottom_stolen) == slines);
673 if ((StdScreen(sp) = NCURSES_SP_NAME(newwin) (NCURSES_SP_ARGx
674 sp->_lines_avail,
675 scolumns, 0, 0)) == 0) {
676 ReturnScreenError();
677 }
678 SET_LINES(sp->_lines_avail);
679 #if !USE_REENTRANT
680 stdscr = StdScreen(sp);
681 #endif
682 sp->_prescreen = FALSE;
683 returnCode(OK);
684 }
685
686 #if NCURSES_SP_FUNCS
687 NCURSES_EXPORT(int)
_nc_setupscreen(int slines GCC_UNUSED,int scolumns GCC_UNUSED,FILE * output,int filtered,int slk_format)688 _nc_setupscreen(int slines GCC_UNUSED,
689 int scolumns GCC_UNUSED,
690 FILE *output,
691 int filtered,
692 int slk_format)
693 {
694 SCREEN *sp = 0;
695 int rc = NCURSES_SP_NAME(_nc_setupscreen) (&sp,
696 slines,
697 scolumns,
698 output,
699 filtered,
700 slk_format);
701 if (rc != OK)
702 _nc_set_screen(0);
703 return rc;
704 }
705 #endif
706
707 /*
708 * The internal implementation interprets line as the number of lines to rip
709 * off from the top or bottom.
710 */
711 NCURSES_EXPORT(int)
NCURSES_SP_NAME(_nc_ripoffline)712 NCURSES_SP_NAME(_nc_ripoffline) (NCURSES_SP_DCLx
713 int line,
714 int (*init) (WINDOW *, int))
715 {
716 int code = ERR;
717
718 START_TRACE();
719 T((T_CALLED("ripoffline(%p,%d,%p)"), (void *) SP_PARM, line, init));
720
721 #if NCURSES_SP_FUNCS
722 if (SP_PARM != 0 && SP_PARM->_prescreen)
723 #endif
724 {
725 if (line == 0) {
726 code = OK;
727 } else {
728 if (safe_ripoff_sp == 0)
729 safe_ripoff_sp = safe_ripoff_stack;
730 if (safe_ripoff_sp < safe_ripoff_stack + N_RIPS) {
731 safe_ripoff_sp->line = line;
732 safe_ripoff_sp->hook = init;
733 (safe_ripoff_sp)++;
734 code = OK;
735 }
736 }
737 }
738
739 returnCode(code);
740 }
741
742 #if NCURSES_SP_FUNCS
743 NCURSES_EXPORT(int)
_nc_ripoffline(int line,int (* init)(WINDOW *,int))744 _nc_ripoffline(int line, int (*init) (WINDOW *, int))
745 {
746 return NCURSES_SP_NAME(_nc_ripoffline) (CURRENT_SCREEN_PRE, line, init);
747 }
748 #endif
749
750 NCURSES_EXPORT(int)
NCURSES_SP_NAME(ripoffline)751 NCURSES_SP_NAME(ripoffline) (NCURSES_SP_DCLx
752 int line,
753 int (*init) (WINDOW *, int))
754 {
755 START_TRACE();
756 return NCURSES_SP_NAME(_nc_ripoffline) (NCURSES_SP_ARGx
757 (line < 0) ? -1 : 1,
758 init);
759 }
760
761 #if NCURSES_SP_FUNCS
762 NCURSES_EXPORT(int)
ripoffline(int line,int (* init)(WINDOW *,int))763 ripoffline(int line, int (*init) (WINDOW *, int))
764 {
765 return NCURSES_SP_NAME(ripoffline) (CURRENT_SCREEN_PRE, line, init);
766 }
767 #endif
768