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 * Terminal setup routines common to termcap and terminfo:
38 *
39 * use_env(bool)
40 * use_tioctl(bool)
41 * setupterm(char *, int, int *)
42 */
43
44 #include <curses.priv.h>
45 #include <tic.h> /* for MAX_NAME_SIZE */
46
47 #if HAVE_LOCALE_H
48 #include <locale.h>
49 #endif
50
51 MODULE_ID("$Id: lib_setup.c,v 1.158 2013/06/22 19:59:08 tom Exp $")
52
53 /****************************************************************************
54 *
55 * Terminal size computation
56 *
57 ****************************************************************************/
58
59 #if HAVE_SIZECHANGE
60 # if !defined(sun) || !TERMIOS
61 # if HAVE_SYS_IOCTL_H
62 # include <sys/ioctl.h>
63 # endif
64 # endif
65 #endif
66
67 #if NEED_PTEM_H
68 /* On SCO, they neglected to define struct winsize in termios.h -- it's only
69 * in termio.h and ptem.h (the former conflicts with other definitions).
70 */
71 # include <sys/stream.h>
72 # include <sys/ptem.h>
73 #endif
74
75 #if HAVE_LANGINFO_CODESET
76 #include <langinfo.h>
77 #endif
78
79 /*
80 * SCO defines TIOCGSIZE and the corresponding struct. Other systems (SunOS,
81 * Solaris, IRIX) define TIOCGWINSZ and struct winsize.
82 */
83 #ifdef TIOCGSIZE
84 # define IOCTL_WINSIZE TIOCGSIZE
85 # define STRUCT_WINSIZE struct ttysize
86 # define WINSIZE_ROWS(n) (int)n.ts_lines
87 # define WINSIZE_COLS(n) (int)n.ts_cols
88 #else
89 # ifdef TIOCGWINSZ
90 # define IOCTL_WINSIZE TIOCGWINSZ
91 # define STRUCT_WINSIZE struct winsize
92 # define WINSIZE_ROWS(n) (int)n.ws_row
93 # define WINSIZE_COLS(n) (int)n.ws_col
94 # endif
95 #endif
96
97 /*
98 * Reduce explicit use of "cur_term" global variable.
99 */
100 #undef CUR
101 #define CUR termp->type.
102
103 /*
104 * Wrap global variables in this module.
105 */
106 #if USE_REENTRANT
107
NCURSES_EXPORT(char *)108 NCURSES_EXPORT(char *)
109 NCURSES_PUBLIC_VAR(ttytype) (void)
110 {
111 static char empty[] = "";
112 char *result = empty;
113
114 #if NCURSES_SP_FUNCS
115 if (CURRENT_SCREEN) {
116 TERMINAL *termp = TerminalOf(CURRENT_SCREEN);
117 if (termp != 0) {
118 result = termp->type.term_names;
119 }
120 }
121 #else
122 if (cur_term != 0) {
123 result = cur_term->type.term_names;
124 }
125 #endif
126 return result;
127 }
128
129 NCURSES_EXPORT(int *)
_nc_ptr_Lines(SCREEN * sp)130 _nc_ptr_Lines(SCREEN *sp)
131 {
132 return ptrLines(sp);
133 }
134
135 NCURSES_EXPORT(int)
NCURSES_PUBLIC_VAR(LINES)136 NCURSES_PUBLIC_VAR(LINES) (void)
137 {
138 return *_nc_ptr_Lines(CURRENT_SCREEN);
139 }
140
141 NCURSES_EXPORT(int *)
_nc_ptr_Cols(SCREEN * sp)142 _nc_ptr_Cols(SCREEN *sp)
143 {
144 return ptrCols(sp);
145 }
146
147 NCURSES_EXPORT(int)
NCURSES_PUBLIC_VAR(COLS)148 NCURSES_PUBLIC_VAR(COLS) (void)
149 {
150 return *_nc_ptr_Cols(CURRENT_SCREEN);
151 }
152
153 NCURSES_EXPORT(int *)
_nc_ptr_Tabsize(SCREEN * sp)154 _nc_ptr_Tabsize(SCREEN *sp)
155 {
156 return ptrTabsize(sp);
157 }
158
159 NCURSES_EXPORT(int)
NCURSES_PUBLIC_VAR(TABSIZE)160 NCURSES_PUBLIC_VAR(TABSIZE) (void)
161 {
162 return *_nc_ptr_Tabsize(CURRENT_SCREEN);
163 }
164 #else
165 NCURSES_EXPORT_VAR(char) ttytype[NAMESIZE] = "";
166 NCURSES_EXPORT_VAR(int) LINES = 0;
167 NCURSES_EXPORT_VAR(int) COLS = 0;
168 NCURSES_EXPORT_VAR(int) TABSIZE = 8;
169 #endif
170
171 #if NCURSES_EXT_FUNCS
172 NCURSES_EXPORT(int)
NCURSES_SP_NAME(set_tabsize)173 NCURSES_SP_NAME(set_tabsize) (NCURSES_SP_DCLx int value)
174 {
175 int code = OK;
176 #if USE_REENTRANT
177 if (SP_PARM) {
178 SP_PARM->_TABSIZE = value;
179 } else {
180 code = ERR;
181 }
182 #else
183 (void) SP_PARM;
184 TABSIZE = value;
185 #endif
186 return code;
187 }
188
189 #if NCURSES_SP_FUNCS
190 NCURSES_EXPORT(int)
set_tabsize(int value)191 set_tabsize(int value)
192 {
193 return NCURSES_SP_NAME(set_tabsize) (CURRENT_SCREEN, value);
194 }
195 #endif
196 #endif /* NCURSES_EXT_FUNCS */
197
198 #if USE_SIGWINCH
199 /*
200 * If we have a pending SIGWINCH, set the flag in each screen.
201 */
202 NCURSES_EXPORT(int)
_nc_handle_sigwinch(SCREEN * sp)203 _nc_handle_sigwinch(SCREEN *sp)
204 {
205 SCREEN *scan;
206
207 if (_nc_globals.have_sigwinch) {
208 _nc_globals.have_sigwinch = 0;
209
210 for (each_screen(scan)) {
211 scan->_sig_winch = TRUE;
212 }
213 }
214
215 return (sp ? sp->_sig_winch : 0);
216 }
217
218 #endif
219
220 NCURSES_EXPORT(void)
NCURSES_SP_NAME(use_env)221 NCURSES_SP_NAME(use_env) (NCURSES_SP_DCLx bool f)
222 {
223 T((T_CALLED("use_env(%p,%d)"), (void *) SP_PARM, (int) f));
224 #if NCURSES_SP_FUNCS
225 START_TRACE();
226 if (IsPreScreen(SP_PARM)) {
227 SP_PARM->_use_env = f;
228 }
229 #else
230 _nc_prescreen.use_env = f;
231 #endif
232 returnVoid;
233 }
234
235 NCURSES_EXPORT(void)
NCURSES_SP_NAME(use_tioctl)236 NCURSES_SP_NAME(use_tioctl) (NCURSES_SP_DCLx bool f)
237 {
238 T((T_CALLED("use_tioctl(%p,%d)"), (void *) SP_PARM, (int) f));
239 #if NCURSES_SP_FUNCS
240 START_TRACE();
241 if (IsPreScreen(SP_PARM)) {
242 SP_PARM->_use_tioctl = f;
243 }
244 #else
245 _nc_prescreen.use_tioctl = f;
246 #endif
247 returnVoid;
248 }
249
250 #if NCURSES_SP_FUNCS
251 NCURSES_EXPORT(void)
use_env(bool f)252 use_env(bool f)
253 {
254 T((T_CALLED("use_env(%d)"), (int) f));
255 START_TRACE();
256 _nc_prescreen.use_env = f;
257 returnVoid;
258 }
259
260 NCURSES_EXPORT(void)
use_tioctl(bool f)261 use_tioctl(bool f)
262 {
263 T((T_CALLED("use_tioctl(%d)"), (int) f));
264 START_TRACE();
265 _nc_prescreen.use_tioctl = f;
266 returnVoid;
267 }
268 #endif
269
270 NCURSES_EXPORT(void)
_nc_get_screensize(SCREEN * sp,TERMINAL * termp,int * linep,int * colp)271 _nc_get_screensize(SCREEN *sp,
272 #ifdef USE_TERM_DRIVER
273 TERMINAL * termp,
274 #endif
275 int *linep, int *colp)
276 /* Obtain lines/columns values from the environment and/or terminfo entry */
277 {
278 #ifdef USE_TERM_DRIVER
279 TERMINAL_CONTROL_BLOCK *TCB;
280 int my_tabsize;
281
282 assert(termp != 0 && linep != 0 && colp != 0);
283 TCB = (TERMINAL_CONTROL_BLOCK *) termp;
284
285 my_tabsize = TCB->info.tabsize;
286 TCB->drv->size(TCB, linep, colp);
287
288 #if USE_REENTRANT
289 if (sp != 0) {
290 sp->_TABSIZE = my_tabsize;
291 }
292 #else
293 (void) sp;
294 TABSIZE = my_tabsize;
295 #endif
296 T(("TABSIZE = %d", my_tabsize));
297 #else /* !USE_TERM_DRIVER */
298 TERMINAL *termp = cur_term;
299 int my_tabsize;
300
301 /* figure out the size of the screen */
302 T(("screen size: terminfo lines = %d columns = %d", lines, columns));
303
304 *linep = (int) lines;
305 *colp = (int) columns;
306
307 if (_nc_prescreen.use_env || _nc_prescreen.use_tioctl) {
308 int value;
309
310 #ifdef __EMX__
311 {
312 int screendata[2];
313 _scrsize(screendata);
314 *colp = screendata[0];
315 *linep = ((sp != 0 && sp->_filtered)
316 ? 1
317 : screendata[1]);
318 T(("EMX screen size: environment LINES = %d COLUMNS = %d",
319 *linep, *colp));
320 }
321 #endif
322 #if HAVE_SIZECHANGE
323 /* try asking the OS */
324 if (isatty(cur_term->Filedes)) {
325 STRUCT_WINSIZE size;
326
327 errno = 0;
328 do {
329 if (ioctl(cur_term->Filedes, IOCTL_WINSIZE, &size) >= 0) {
330 *linep = ((sp != 0 && sp->_filtered)
331 ? 1
332 : WINSIZE_ROWS(size));
333 *colp = WINSIZE_COLS(size);
334 T(("SYS screen size: environment LINES = %d COLUMNS = %d",
335 *linep, *colp));
336 break;
337 }
338 } while
339 (errno == EINTR);
340 }
341 #endif /* HAVE_SIZECHANGE */
342
343 if (_nc_prescreen.use_env) {
344 if (_nc_prescreen.use_tioctl) {
345 /*
346 * If environment variables are used, update them.
347 */
348 if ((sp == 0 || !sp->_filtered) && _nc_getenv_num("LINES") > 0) {
349 _nc_setenv_num("LINES", *linep);
350 }
351 if (_nc_getenv_num("COLUMNS") > 0) {
352 _nc_setenv_num("COLUMNS", *colp);
353 }
354 }
355
356 /*
357 * Finally, look for environment variables.
358 *
359 * Solaris lets users override either dimension with an environment
360 * variable.
361 */
362 if ((value = _nc_getenv_num("LINES")) > 0) {
363 *linep = value;
364 T(("screen size: environment LINES = %d", *linep));
365 }
366 if ((value = _nc_getenv_num("COLUMNS")) > 0) {
367 *colp = value;
368 T(("screen size: environment COLUMNS = %d", *colp));
369 }
370 }
371
372 /* if we can't get dynamic info about the size, use static */
373 if (*linep <= 0) {
374 *linep = (int) lines;
375 }
376 if (*colp <= 0) {
377 *colp = (int) columns;
378 }
379
380 /* the ultimate fallback, assume fixed 24x80 size */
381 if (*linep <= 0) {
382 *linep = 24;
383 }
384 if (*colp <= 0) {
385 *colp = 80;
386 }
387
388 /*
389 * Put the derived values back in the screen-size caps, so
390 * tigetnum() and tgetnum() will do the right thing.
391 */
392 lines = (short) (*linep);
393 columns = (short) (*colp);
394 }
395
396 T(("screen size is %dx%d", *linep, *colp));
397
398 if (VALID_NUMERIC(init_tabs))
399 my_tabsize = (int) init_tabs;
400 else
401 my_tabsize = 8;
402
403 #if USE_REENTRANT
404 if (sp != 0)
405 sp->_TABSIZE = my_tabsize;
406 #else
407 TABSIZE = my_tabsize;
408 #endif
409 T(("TABSIZE = %d", TABSIZE));
410 #endif /* USE_TERM_DRIVER */
411 }
412
413 #if USE_SIZECHANGE
414 NCURSES_EXPORT(void)
_nc_update_screensize(SCREEN * sp)415 _nc_update_screensize(SCREEN *sp)
416 {
417 int new_lines;
418 int new_cols;
419
420 #ifdef USE_TERM_DRIVER
421 int old_lines;
422 int old_cols;
423
424 assert(sp != 0);
425
426 CallDriver_2(sp, getsize, &old_lines, &old_cols);
427
428 #else
429 TERMINAL *termp = cur_term;
430 int old_lines = lines;
431 int old_cols = columns;
432 #endif
433
434 TINFO_GET_SIZE(sp, sp->_term, &new_lines, &new_cols);
435
436 /*
437 * See is_term_resized() and resizeterm().
438 * We're doing it this way because those functions belong to the upper
439 * ncurses library, while this resides in the lower terminfo library.
440 */
441 if (sp != 0 && sp->_resize != 0) {
442 if ((new_lines != old_lines) || (new_cols != old_cols)) {
443 sp->_resize(NCURSES_SP_ARGx new_lines, new_cols);
444 } else if (sp->_sig_winch && (sp->_ungetch != 0)) {
445 sp->_ungetch(SP_PARM, KEY_RESIZE); /* so application can know this */
446 }
447 sp->_sig_winch = FALSE;
448 }
449 }
450 #endif
451
452 /****************************************************************************
453 *
454 * Terminal setup
455 *
456 ****************************************************************************/
457
458 #if NCURSES_USE_DATABASE || NCURSES_USE_TERMCAP
459 /*
460 * Return 1 if entry found, 0 if not found, -1 if database not accessible,
461 * just like tgetent().
462 */
463 int
_nc_setup_tinfo(const char * const tn,TERMTYPE * const tp)464 _nc_setup_tinfo(const char *const tn, TERMTYPE *const tp)
465 {
466 char filename[PATH_MAX];
467 int status = _nc_read_entry(tn, filename, tp);
468
469 /*
470 * If we have an entry, force all of the cancelled strings to null
471 * pointers so we don't have to test them in the rest of the library.
472 * (The terminfo compiler bypasses this logic, since it must know if
473 * a string is cancelled, for merging entries).
474 */
475 if (status == TGETENT_YES) {
476 unsigned n;
477 for_each_boolean(n, tp) {
478 if (!VALID_BOOLEAN(tp->Booleans[n]))
479 tp->Booleans[n] = FALSE;
480 }
481 for_each_string(n, tp) {
482 if (tp->Strings[n] == CANCELLED_STRING)
483 tp->Strings[n] = ABSENT_STRING;
484 }
485 }
486 return (status);
487 }
488 #endif
489
490 /*
491 ** Take the real command character out of the CC environment variable
492 ** and substitute it in for the prototype given in 'command_character'.
493 */
494 void
_nc_tinfo_cmdch(TERMINAL * termp,int proto)495 _nc_tinfo_cmdch(TERMINAL * termp, int proto)
496 {
497 unsigned i;
498 char CC;
499 char *tmp;
500
501 /*
502 * Only use the character if the string is a single character,
503 * since it is fairly common for developers to set the C compiler
504 * name as an environment variable - using the same symbol.
505 */
506 if ((tmp = getenv("CC")) != 0 && strlen(tmp) == 1) {
507 CC = *tmp;
508 for_each_string(i, &(termp->type)) {
509 for (tmp = termp->type.Strings[i]; tmp && *tmp; tmp++) {
510 if (UChar(*tmp) == proto)
511 *tmp = CC;
512 }
513 }
514 }
515 }
516
517 /*
518 * Find the locale which is in effect.
519 */
520 NCURSES_EXPORT(char *)
_nc_get_locale(void)521 _nc_get_locale(void)
522 {
523 char *env;
524 #if HAVE_LOCALE_H
525 /*
526 * This is preferable to using getenv() since it ensures that we are using
527 * the locale which was actually initialized by the application.
528 */
529 env = setlocale(LC_CTYPE, 0);
530 #else
531 if (((env = getenv("LC_ALL")) != 0 && *env != '\0')
532 || ((env = getenv("LC_CTYPE")) != 0 && *env != '\0')
533 || ((env = getenv("LANG")) != 0 && *env != '\0')) {
534 ;
535 }
536 #endif
537 T(("_nc_get_locale %s", _nc_visbuf(env)));
538 return env;
539 }
540
541 /*
542 * Check if we are running in a UTF-8 locale.
543 */
544 NCURSES_EXPORT(int)
_nc_unicode_locale(void)545 _nc_unicode_locale(void)
546 {
547 int result = 0;
548 #if defined(__MINGW32__) && USE_WIDEC_SUPPORT
549 result = 1;
550 #elif HAVE_LANGINFO_CODESET
551 char *env = nl_langinfo(CODESET);
552 result = !strcmp(env, "UTF-8");
553 T(("_nc_unicode_locale(%s) ->%d", env, result));
554 #else
555 char *env = _nc_get_locale();
556 if (env != 0) {
557 if (strstr(env, ".UTF-8") != 0) {
558 result = 1;
559 T(("_nc_unicode_locale(%s) ->%d", env, result));
560 }
561 }
562 #endif
563 return result;
564 }
565
566 #define CONTROL_N(s) ((s) != 0 && strstr(s, "\016") != 0)
567 #define CONTROL_O(s) ((s) != 0 && strstr(s, "\017") != 0)
568
569 /*
570 * Check for known broken cases where a UTF-8 locale breaks the alternate
571 * character set.
572 */
573 NCURSES_EXPORT(int)
_nc_locale_breaks_acs(TERMINAL * termp)574 _nc_locale_breaks_acs(TERMINAL * termp)
575 {
576 const char *env_name = "NCURSES_NO_UTF8_ACS";
577 char *env;
578 int value;
579 int result = 0;
580
581 if (getenv(env_name) != 0) {
582 result = _nc_getenv_num(env_name);
583 } else if ((value = tigetnum("U8")) >= 0) {
584 result = value; /* use extension feature */
585 } else if ((env = getenv("TERM")) != 0) {
586 if (strstr(env, "linux")) {
587 result = 1; /* always broken */
588 } else if (strstr(env, "screen") != 0
589 && ((env = getenv("TERMCAP")) != 0
590 && strstr(env, "screen") != 0)
591 && strstr(env, "hhII00") != 0) {
592 if (CONTROL_N(enter_alt_charset_mode) ||
593 CONTROL_O(enter_alt_charset_mode) ||
594 CONTROL_N(set_attributes) ||
595 CONTROL_O(set_attributes)) {
596 result = 1;
597 }
598 }
599 }
600 return result;
601 }
602
603 NCURSES_EXPORT(int)
TINFO_SETUP_TERM(TERMINAL ** tp,NCURSES_CONST char * tname,int Filedes,int * errret,int reuse)604 TINFO_SETUP_TERM(TERMINAL ** tp,
605 NCURSES_CONST char *tname,
606 int Filedes,
607 int *errret,
608 int reuse)
609 {
610 #ifdef USE_TERM_DRIVER
611 TERMINAL_CONTROL_BLOCK *TCB = 0;
612 #else
613 int status;
614 #endif
615 TERMINAL *termp;
616 SCREEN *sp = 0;
617 int code = ERR;
618
619 START_TRACE();
620
621 #ifdef USE_TERM_DRIVER
622 T((T_CALLED("_nc_setupterm_ex(%p,%s,%d,%p)"),
623 (void *) tp, _nc_visbuf(tname), Filedes, (void *) errret));
624
625 if (tp == 0) {
626 ret_error0(TGETENT_ERR,
627 "Invalid parameter, internal error.\n");
628 } else
629 termp = *tp;
630 #else
631 termp = cur_term;
632 T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, (void *) errret));
633 #endif
634
635 if (tname == 0) {
636 tname = getenv("TERM");
637 if (tname == 0 || *tname == '\0') {
638 #ifdef USE_TERM_DRIVER
639 tname = "unknown";
640 #else
641 ret_error0(TGETENT_ERR, "TERM environment variable not set.\n");
642 #endif
643 }
644 }
645
646 if (strlen(tname) > MAX_NAME_SIZE) {
647 ret_error(TGETENT_ERR,
648 "TERM environment must be <= %d characters.\n",
649 MAX_NAME_SIZE);
650 }
651
652 T(("your terminal name is %s", tname));
653
654 /*
655 * Allow output redirection. This is what SVr3 does. If stdout is
656 * directed to a file, screen updates go to standard error.
657 */
658 if (Filedes == STDOUT_FILENO && !isatty(Filedes))
659 Filedes = STDERR_FILENO;
660
661 /*
662 * Check if we have already initialized to use this terminal. If so, we
663 * do not need to re-read the terminfo entry, or obtain TTY settings.
664 *
665 * This is an improvement on SVr4 curses. If an application mixes curses
666 * and termcap calls, it may call both initscr and tgetent. This is not
667 * really a good thing to do, but can happen if someone tries using ncurses
668 * with the readline library. The problem we are fixing is that when
669 * tgetent calls setupterm, the resulting Ottyb struct in cur_term is
670 * zeroed. A subsequent call to endwin uses the zeroed terminal settings
671 * rather than the ones saved in initscr. So we check if cur_term appears
672 * to contain terminal settings for the same output file as our current
673 * call - and copy those terminal settings. (SVr4 curses does not do this,
674 * however applications that are working around the problem will still work
675 * properly with this feature).
676 */
677 if (reuse
678 && (termp != 0)
679 && termp->Filedes == Filedes
680 && termp->_termname != 0
681 && !strcmp(termp->_termname, tname)
682 && _nc_name_match(termp->type.term_names, tname, "|")) {
683 T(("reusing existing terminal information and mode-settings"));
684 code = OK;
685 #ifdef USE_TERM_DRIVER
686 TCB = (TERMINAL_CONTROL_BLOCK *) termp;
687 #endif
688 } else {
689 #ifdef USE_TERM_DRIVER
690 TERMINAL_CONTROL_BLOCK *my_tcb;
691 my_tcb = typeCalloc(TERMINAL_CONTROL_BLOCK, 1);
692 termp = &(my_tcb->term);
693 #else
694 termp = typeCalloc(TERMINAL, 1);
695 #endif
696 if (termp == 0) {
697 ret_error0(TGETENT_ERR,
698 "Not enough memory to create terminal structure.\n");
699 }
700 #ifdef USE_TERM_DRIVER
701 INIT_TERM_DRIVER();
702 TCB = (TERMINAL_CONTROL_BLOCK *) termp;
703 code = _nc_globals.term_driver(TCB, tname, errret);
704 if (code == OK) {
705 termp->Filedes = (short) Filedes;
706 termp->_termname = strdup(tname);
707 } else {
708 ret_error0(TGETENT_ERR,
709 "Could not find any driver to handle this terminal.\n");
710 }
711 #else
712 #if NCURSES_USE_DATABASE || NCURSES_USE_TERMCAP
713 status = _nc_setup_tinfo(tname, &termp->type);
714 #else
715 status = TGETENT_NO;
716 #endif
717
718 /* try fallback list if entry on disk */
719 if (status != TGETENT_YES) {
720 const TERMTYPE *fallback = _nc_fallback(tname);
721
722 if (fallback) {
723 _nc_copy_termtype(&(termp->type), fallback);
724 status = TGETENT_YES;
725 }
726 }
727
728 if (status != TGETENT_YES) {
729 del_curterm(termp);
730 if (status == TGETENT_ERR) {
731 ret_error0(status, "terminals database is inaccessible\n");
732 } else if (status == TGETENT_NO) {
733 ret_error1(status, "unknown terminal type.\n", tname);
734 }
735 }
736 #if !USE_REENTRANT
737 strncpy(ttytype, termp->type.term_names, (size_t) (NAMESIZE - 1));
738 ttytype[NAMESIZE - 1] = '\0';
739 #endif
740
741 termp->Filedes = (short) Filedes;
742 termp->_termname = strdup(tname);
743
744 set_curterm(termp);
745
746 if (command_character)
747 _nc_tinfo_cmdch(termp, UChar(*command_character));
748
749 /*
750 * If an application calls setupterm() rather than initscr() or
751 * newterm(), we will not have the def_prog_mode() call in
752 * _nc_setupscreen(). Do it now anyway, so we can initialize the
753 * baudrate.
754 */
755 if (isatty(Filedes)) {
756 def_prog_mode();
757 baudrate();
758 }
759 code = OK;
760 #endif
761 }
762
763 #ifdef USE_TERM_DRIVER
764 *tp = termp;
765 NCURSES_SP_NAME(set_curterm) (sp, termp);
766 TCB->drv->init(TCB);
767 #else
768 sp = SP;
769 #endif
770
771 /*
772 * We should always check the screensize, just in case.
773 */
774 TINFO_GET_SIZE(sp, termp, ptrLines(sp), ptrCols(sp));
775
776 if (errret)
777 *errret = TGETENT_YES;
778
779 #ifndef USE_TERM_DRIVER
780 if (generic_type) {
781 /*
782 * BSD 4.3's termcap contains mis-typed "gn" for wy99. Do a sanity
783 * check before giving up.
784 */
785 if ((VALID_STRING(cursor_address)
786 || (VALID_STRING(cursor_down) && VALID_STRING(cursor_home)))
787 && VALID_STRING(clear_screen)) {
788 ret_error1(TGETENT_YES, "terminal is not really generic.\n", tname);
789 } else {
790 del_curterm(termp);
791 ret_error1(TGETENT_NO, "I need something more specific.\n", tname);
792 }
793 } else if (hard_copy) {
794 ret_error1(TGETENT_YES, "I can't handle hardcopy terminals.\n", tname);
795 }
796 #endif
797 returnCode(code);
798 }
799
800 #if NCURSES_SP_FUNCS
801 /*
802 * In case of handling multiple screens, we need to have a screen before
803 * initialization in setupscreen takes place. This is to extend the substitute
804 * for some of the stuff in _nc_prescreen, especially for slk and ripoff
805 * handling which should be done per screen.
806 */
807 NCURSES_EXPORT(SCREEN *)
new_prescr(void)808 new_prescr(void)
809 {
810 static SCREEN *sp;
811
812 START_TRACE();
813 T((T_CALLED("new_prescr()")));
814
815 if (sp == 0) {
816 sp = _nc_alloc_screen_sp();
817 if (sp != 0) {
818 sp->rsp = sp->rippedoff;
819 sp->_filtered = _nc_prescreen.filter_mode;
820 sp->_use_env = _nc_prescreen.use_env;
821 #if NCURSES_NO_PADDING
822 sp->_no_padding = _nc_prescreen._no_padding;
823 #endif
824 sp->slk_format = 0;
825 sp->_slk = 0;
826 sp->_prescreen = TRUE;
827 SP_PRE_INIT(sp);
828 #if USE_REENTRANT
829 sp->_TABSIZE = _nc_prescreen._TABSIZE;
830 sp->_ESCDELAY = _nc_prescreen._ESCDELAY;
831 #endif
832 }
833 }
834 returnSP(sp);
835 }
836 #endif
837
838 #ifdef USE_TERM_DRIVER
839 /*
840 * This entrypoint is called from tgetent() to allow a special case of reusing
841 * the same TERMINAL data (see comment).
842 */
843 NCURSES_EXPORT(int)
_nc_setupterm(NCURSES_CONST char * tname,int Filedes,int * errret,int reuse)844 _nc_setupterm(NCURSES_CONST char *tname,
845 int Filedes,
846 int *errret,
847 int reuse)
848 {
849 int res;
850 TERMINAL *termp = 0;
851 res = TINFO_SETUP_TERM(&termp, tname, Filedes, errret, reuse);
852 if (ERR != res)
853 NCURSES_SP_NAME(set_curterm) (CURRENT_SCREEN_PRE, termp);
854 return res;
855 }
856 #endif
857
858 /*
859 * setupterm(termname, Filedes, errret)
860 *
861 * Find and read the appropriate object file for the terminal
862 * Make cur_term point to the structure.
863 */
864 NCURSES_EXPORT(int)
setupterm(NCURSES_CONST char * tname,int Filedes,int * errret)865 setupterm(NCURSES_CONST char *tname, int Filedes, int *errret)
866 {
867 return _nc_setupterm(tname, Filedes, errret, FALSE);
868 }
869