1 /****************************************************************************
2 * Copyright 2018-2022,2023 Thomas E. Dickey *
3 * Copyright 1998-2016,2017 Free Software Foundation, Inc. *
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: *
13 * The above copyright notice and this permission notice shall be included *
14 * in all copies or substantial portions of the Software. *
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. *
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 *
28 ****************************************************************************/
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 ****************************************************************************/
38 * Terminal setup routines common to termcap and terminfo:
42 * setupterm(char *, int, int *)
45 #include <curses.priv.h>
46 #include <tic.h> /* for MAX_NAME_SIZE */
52 MODULE_ID("$Id: lib_setup.c,v 1.226 2023/10/01 23:53:23 tom Exp $")
54 /****************************************************************************
56 * Terminal size computation
58 ****************************************************************************/
61 # if !defined(sun) || !TERMIOS
63 # include <sys/ioctl.h>
69 /* On SCO, they neglected to define struct winsize in termios.h -- it is only
70 * in termio.h and ptem.h (the former conflicts with other definitions).
72 # include <sys/stream.h>
73 # include <sys/ptem.h>
76 #if HAVE_LANGINFO_CODESET
81 * SCO defines TIOCGSIZE and the corresponding struct. Other systems (SunOS,
82 * Solaris, IRIX) define TIOCGWINSZ and struct winsize.
85 # define IOCTL_WINSIZE TIOCGSIZE
86 # define STRUCT_WINSIZE struct ttysize
87 # define WINSIZE_ROWS(n) (int)n.ts_lines
88 # define WINSIZE_COLS(n) (int)n.ts_cols
91 # define IOCTL_WINSIZE TIOCGWINSZ
92 # define STRUCT_WINSIZE struct winsize
93 # define WINSIZE_ROWS(n) (int)n.ws_row
94 # define WINSIZE_COLS(n) (int)n.ws_col
99 * Reduce explicit use of "cur_term" global variable.
102 #define CUR TerminalType(termp).
105 * Wrap global variables in this module.
109 NCURSES_EXPORT(char *)
110 NCURSES_PUBLIC_VAR(ttytype) (void)
112 static char empty[] = "";
113 char *result = empty;
116 if (CURRENT_SCREEN) {
117 TERMINAL *termp = TerminalOf(CURRENT_SCREEN);
119 result = TerminalType(termp).term_names;
124 result = TerminalType(cur_term).term_names;
130 NCURSES_EXPORT(int *)
131 _nc_ptr_Lines(SCREEN *sp)
137 NCURSES_PUBLIC_VAR(LINES) (void)
139 return *_nc_ptr_Lines(CURRENT_SCREEN);
142 NCURSES_EXPORT(int *)
143 _nc_ptr_Cols(SCREEN *sp)
149 NCURSES_PUBLIC_VAR(COLS) (void)
151 return *_nc_ptr_Cols(CURRENT_SCREEN);
154 NCURSES_EXPORT(int *)
155 _nc_ptr_Tabsize(SCREEN *sp)
157 return ptrTabsize(sp);
161 NCURSES_PUBLIC_VAR(TABSIZE) (void)
163 return *_nc_ptr_Tabsize(CURRENT_SCREEN);
166 NCURSES_EXPORT_VAR(char) ttytype[NAMESIZE] = "";
167 NCURSES_EXPORT_VAR(int) LINES = 0;
168 NCURSES_EXPORT_VAR(int) COLS = 0;
169 NCURSES_EXPORT_VAR(int) TABSIZE = 8;
172 #if NCURSES_EXT_FUNCS
174 NCURSES_SP_NAME(set_tabsize) (NCURSES_SP_DCLx int value)
182 SP_PARM->_TABSIZE = value;
196 set_tabsize(int value)
198 return NCURSES_SP_NAME(set_tabsize) (CURRENT_SCREEN, value);
201 #endif /* NCURSES_EXT_FUNCS */
205 * If we have a pending SIGWINCH, set the flag in each screen.
208 _nc_handle_sigwinch(SCREEN *sp)
212 if (_nc_globals.have_sigwinch) {
213 _nc_globals.have_sigwinch = 0;
215 for (each_screen(scan)) {
216 scan->_sig_winch = TRUE;
220 return (sp ? sp->_sig_winch : 0);
226 NCURSES_SP_NAME(use_env) (NCURSES_SP_DCLx bool f)
229 T((T_CALLED("use_env(%p,%d)"), (void *) SP_PARM, (int) f));
231 if (IsPreScreen(SP_PARM)) {
232 SP_PARM->_use_env = f;
235 _nc_prescreen.use_env = f;
241 NCURSES_SP_NAME(use_tioctl) (NCURSES_SP_DCLx bool f)
244 T((T_CALLED("use_tioctl(%p,%d)"), (void *) SP_PARM, (int) f));
246 if (IsPreScreen(SP_PARM)) {
247 SP_PARM->use_tioctl = f;
250 _nc_prescreen.use_tioctl = f;
260 T((T_CALLED("use_env(%d)"), (int) f));
261 _nc_prescreen.use_env = f;
269 T((T_CALLED("use_tioctl(%d)"), (int) f));
270 _nc_prescreen.use_tioctl = f;
275 #if !(defined(USE_TERM_DRIVER) || defined(EXP_WIN32_DRIVER))
277 _nc_default_screensize(TERMINAL *termp, int *linep, int *colp)
279 /* if we can't get dynamic info about the size, use static */
281 *linep = (int) lines;
284 *colp = (int) columns;
287 /* the ultimate fallback, assume fixed 24x80 size */
297 skip_csi(const char *value)
299 if (UChar(*value) == CSI_CHR) {
301 } else if (*value == ESC_CHR && value[1] == L_BLOCK) {
308 is_expected(const char *value, const char *expected)
311 if (VALID_STRING(value)) {
312 const char *skipped = skip_csi(value);
313 if (skipped != value) {
314 if (!strcmp(skipped, expected))
322 get_position(TERMINAL *termp, int fd, int *row, int *col)
325 size_t need = strlen(user7);
328 have = (int) write(fd, user7, need);
330 if (have == (int) need) {
336 s = memset(buf, '\0', sizeof(buf));
338 int ask = (int) (sizeof(buf) - 1 - (s - buf));
339 int got = (int) read(fd, s, ask);
344 } while (strchr(buf, 'R') == NULL);
345 T(("response %s", _nc_visbuf(buf)));
346 if (sscanf(skip_csi(buf), "%d;%d%c", &y, &x, &ignore) != 2
347 || (ignore != 'R' && ignore != ';')) {
353 T(("get_position %d,%d", *row, *col));
358 set_position(TERMINAL *termp, int fd, int row, int col)
361 char *actual = TIPARM_2(cursor_address, row, col);
362 T(("set_position %d,%d", row, col));
363 if (actual != NULL) {
364 size_t want = strlen(actual);
365 int have = (int) write(fd, actual, want); /* FIXME - padding */
366 result = ((int) want == have);
372 * This is a little more complicated than one might expect, because we do this
373 * before setting up the terminal modes, etc.
376 _nc_check_screensize(TERMINAL *termp, int *linep, int *colp)
378 int fd = fileno(stderr);
382 && VALID_STRING(cursor_address)
383 && is_expected(user7, "6n")
384 && is_expected(user6, "%i%d;%dR")
385 && GET_TTY(fd, &saved) == OK) {
386 int current_y, current_x;
387 int updated_y, updated_x;
390 alter.c_lflag &= (unsigned) ~(ECHO | ICANON | ISIG | IEXTEN);
391 alter.c_iflag &= (unsigned) ~(IXON | BRKINT | PARMRK);
392 alter.c_cc[VMIN] = 0;
393 alter.c_cc[VTIME] = 1;
396 if (get_position(termp, fd, ¤t_y, ¤t_x)
397 && set_position(termp, fd, 9999, 9999)
398 && get_position(termp, fd, &updated_y, &updated_x)) {
401 set_position(termp, fd, current_y, current_x);
403 /* restore tty modes */
407 _nc_default_screensize(termp, linep, colp);
410 #define _nc_check_screensize(termp, linep, colp) _nc_default_screensize(termp, linep, colp)
414 _nc_get_screensize(SCREEN *sp,
415 #ifdef USE_TERM_DRIVER
418 int *linep, int *colp)
419 /* Obtain lines/columns values from the environment and/or terminfo entry */
421 #ifdef USE_TERM_DRIVER
422 TERMINAL_CONTROL_BLOCK *TCB;
425 assert(termp != 0 && linep != 0 && colp != 0);
426 TCB = (TERMINAL_CONTROL_BLOCK *) termp;
428 my_tabsize = TCB->info.tabsize;
429 TCB->drv->td_size(TCB, linep, colp);
433 sp->_TABSIZE = my_tabsize;
437 TABSIZE = my_tabsize;
439 T(("TABSIZE = %d", my_tabsize));
440 #else /* !USE_TERM_DRIVER */
441 TERMINAL *termp = cur_term;
443 bool useEnv = _nc_prescreen.use_env;
444 bool useTioctl = _nc_prescreen.use_tioctl;
446 #ifdef EXP_WIN32_DRIVER
447 /* If we are here, then Windows console is used in terminfo mode.
448 We need to figure out the size using the console API
450 _nc_console_size(linep, colp);
451 T(("screen size: winconsole lines = %d columns = %d", *linep, *colp));
453 /* figure out the size of the screen */
454 T(("screen size: terminfo lines = %d columns = %d", lines, columns));
456 *linep = (int) lines;
457 *colp = (int) columns;
462 useEnv = sp->_use_env;
463 useTioctl = sp->use_tioctl;
467 if (useEnv || useTioctl) {
471 _scrsize(screendata);
472 *colp = screendata[0];
473 *linep = ((sp != 0 && sp->_filtered)
476 T(("EMX screen size: environment LINES = %d COLUMNS = %d",
481 /* try asking the OS */
482 if (NC_ISATTY(cur_term->Filedes)) {
487 if (ioctl(cur_term->Filedes, IOCTL_WINSIZE, &size) >= 0) {
488 *linep = ((sp != 0 && sp->_filtered)
490 : WINSIZE_ROWS(size));
491 *colp = WINSIZE_COLS(size);
492 T(("SYS screen size: environment LINES = %d COLUMNS = %d",
499 #endif /* HAVE_SIZECHANGE */
506 * If environment variables are used, update them.
508 if ((sp == 0 || !sp->_filtered) && _nc_getenv_num("LINES") > 0) {
509 _nc_setenv_num("LINES", *linep);
511 if (_nc_getenv_num("COLUMNS") > 0) {
512 _nc_setenv_num("COLUMNS", *colp);
517 * Finally, look for environment variables.
519 * Solaris lets users override either dimension with an environment
522 if ((value = _nc_getenv_num("LINES")) > 0) {
524 T(("screen size: environment LINES = %d", *linep));
526 if ((value = _nc_getenv_num("COLUMNS")) > 0) {
528 T(("screen size: environment COLUMNS = %d", *colp));
531 _nc_default_screensize(termp, linep, colp);
533 _nc_check_screensize(termp, linep, colp);
537 * Put the derived values back in the screen-size caps, so
538 * tigetnum() and tgetnum() will do the right thing.
540 lines = (NCURSES_INT2) (*linep);
541 columns = (NCURSES_INT2) (*colp);
542 #if NCURSES_EXT_NUMBERS
543 #define OldNumber(termp,name) \
544 (termp)->type.Numbers[(&name - (termp)->type2.Numbers)]
545 OldNumber(termp, lines) = (short) (*linep);
546 OldNumber(termp, columns) = (short) (*colp);
549 _nc_check_screensize(termp, linep, colp);
552 T(("screen size is %dx%d", *linep, *colp));
554 if (VALID_NUMERIC(init_tabs))
555 my_tabsize = (int) init_tabs;
561 sp->_TABSIZE = my_tabsize;
563 TABSIZE = my_tabsize;
565 T(("TABSIZE = %d", TABSIZE));
566 #endif /* USE_TERM_DRIVER */
571 _nc_update_screensize(SCREEN *sp)
576 #ifdef USE_TERM_DRIVER
582 CallDriver_2(sp, td_getsize, &old_lines, &old_cols);
585 TERMINAL *termp = cur_term;
586 int old_lines = lines;
587 int old_cols = columns;
591 TINFO_GET_SIZE(sp, sp->_term, &new_lines, &new_cols);
593 * See is_term_resized() and resizeterm().
594 * We're doing it this way because those functions belong to the upper
595 * ncurses library, while this resides in the lower terminfo library.
597 if (sp->_resize != 0) {
598 if ((new_lines != old_lines) || (new_cols != old_cols)) {
599 sp->_resize(NCURSES_SP_ARGx new_lines, new_cols);
600 } else if (sp->_sig_winch && (sp->_ungetch != 0)) {
601 sp->_ungetch(SP_PARM, KEY_RESIZE); /* so application can know this */
603 sp->_sig_winch = FALSE;
607 #endif /* USE_SIZECHANGE */
609 /****************************************************************************
613 ****************************************************************************/
615 #if NCURSES_USE_DATABASE || NCURSES_USE_TERMCAP
617 * Return 1 if entry found, 0 if not found, -1 if database not accessible,
618 * just like tgetent().
621 _nc_setup_tinfo(const char *const tn, TERMTYPE2 *const tp)
623 char filename[PATH_MAX];
624 int status = _nc_read_entry2(tn, filename, tp);
627 * If we have an entry, force all of the cancelled strings to null
628 * pointers so we don't have to test them in the rest of the library.
629 * (The terminfo compiler bypasses this logic, since it must know if
630 * a string is cancelled, for merging entries).
632 if (status == TGETENT_YES) {
634 T(("_nc_setup_tinfo - resetting invalid booleans/strings"));
635 for_each_boolean(n, tp) {
636 if (!VALID_BOOLEAN(tp->Booleans[n]))
637 tp->Booleans[n] = FALSE;
639 for_each_string(n, tp) {
640 if (tp->Strings[n] == CANCELLED_STRING)
641 tp->Strings[n] = ABSENT_STRING;
649 * Take the real command character out of the CC environment variable
650 * and substitute it in for the prototype given in 'command_character'.
653 _nc_tinfo_cmdch(TERMINAL *termp, int proto)
658 * Only use the character if the string is a single character,
659 * since it is fairly common for developers to set the C compiler
660 * name as an environment variable - using the same symbol.
662 if ((tmp = getenv("CC")) != 0 && strlen(tmp) == 1) {
666 for_each_string(i, &(termp->type)) {
667 tmp = termp->type.Strings[i];
668 if (VALID_STRING(tmp)) {
669 for (; *tmp; ++tmp) {
670 if (UChar(*tmp) == proto)
679 * Find the locale which is in effect.
681 NCURSES_EXPORT(char *)
687 * This is preferable to using getenv() since it ensures that we are using
688 * the locale which was actually initialized by the application.
690 env = setlocale(LC_CTYPE, 0);
692 if (((env = getenv("LANG")) != 0 && *env != '\0')
693 || ((env = getenv("LC_CTYPE")) != 0 && *env != '\0')
694 || ((env = getenv("LC_ALL")) != 0 && *env != '\0')) {
698 T(("_nc_get_locale %s", _nc_visbuf(env)));
703 * Check if we are running in a UTF-8 locale.
706 _nc_unicode_locale(void)
709 #if defined(_NC_WINDOWS) && USE_WIDEC_SUPPORT
711 #elif HAVE_LANGINFO_CODESET
712 char *env = nl_langinfo(CODESET);
713 result = !strcmp(env, "UTF-8");
714 T(("_nc_unicode_locale(%s) ->%d", env, result));
716 char *env = _nc_get_locale();
718 if (strstr(env, ".UTF-8") != 0) {
720 T(("_nc_unicode_locale(%s) ->%d", env, result));
727 #define CONTROL_N(s) ((s) != 0 && strstr(s, "\016") != 0)
728 #define CONTROL_O(s) ((s) != 0 && strstr(s, "\017") != 0)
731 * Check for known broken cases where a UTF-8 locale breaks the alternate
735 _nc_locale_breaks_acs(TERMINAL *termp)
737 const char *env_name = "NCURSES_NO_UTF8_ACS";
742 T((T_CALLED("_nc_locale_breaks_acs:%d"), result));
743 if (getenv(env_name) != 0) {
744 result = _nc_getenv_num(env_name);
745 } else if ((value = tigetnum("U8")) >= 0) {
746 result = value; /* use extension feature */
747 } else if ((env = getenv("TERM")) != 0) {
748 if (strstr(env, "linux")) {
749 result = 1; /* always broken */
750 } else if (strstr(env, "screen") != 0
751 && ((env = getenv("TERMCAP")) != 0
752 && strstr(env, "screen") != 0)
753 && strstr(env, "hhII00") != 0) {
754 if (CONTROL_N(enter_alt_charset_mode) ||
755 CONTROL_O(enter_alt_charset_mode) ||
756 CONTROL_N(set_attributes) ||
757 CONTROL_O(set_attributes)) {
766 TINFO_SETUP_TERM(TERMINAL **tp,
772 #ifdef USE_TERM_DRIVER
773 TERMINAL_CONTROL_BLOCK *TCB = 0;
782 #ifdef USE_TERM_DRIVER
783 T((T_CALLED("_nc_setupterm_ex(%p,%s,%d,%p)"),
784 (void *) tp, _nc_visbuf(tname), Filedes, (void *) errret));
787 ret_error0(TGETENT_ERR,
788 "Invalid parameter, internal error.\n");
793 T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, (void *) errret));
797 tname = getenv("TERM");
798 #if defined(EXP_WIN32_DRIVER)
799 if (!VALID_TERM_ENV(tname, NO_TERMINAL)) {
800 T(("Failure with TERM=%s", NonNull(tname)));
801 ret_error0(TGETENT_ERR, "TERM environment variable not set.\n");
803 #elif defined(USE_TERM_DRIVER)
804 if (!NonEmpty(tname))
807 if (!NonEmpty(tname)) {
808 T(("Failure with TERM=%s", NonNull(tname)));
809 ret_error0(TGETENT_ERR, "TERM environment variable not set.\n");
813 myname = strdup(tname);
814 if (myname == NULL || strlen(myname) > MAX_NAME_SIZE) {
815 ret_error(TGETENT_ERR,
816 "TERM environment must be 1..%d characters.\n",
821 T(("your terminal name is %s", myname));
824 * Allow output redirection. This is what SVr3 does. If stdout is
825 * directed to a file, screen updates go to standard error.
827 if (Filedes == STDOUT_FILENO && !NC_ISATTY(Filedes))
828 Filedes = STDERR_FILENO;
829 #if defined(EXP_WIN32_DRIVER)
830 if (Filedes != STDERR_FILENO && NC_ISATTY(Filedes))
831 _setmode(Filedes, _O_BINARY);
835 * Check if we have already initialized to use this terminal. If so, we
836 * do not need to re-read the terminfo entry, or obtain TTY settings.
838 * This is an improvement on SVr4 curses. If an application mixes curses
839 * and termcap calls, it may call both initscr and tgetent. This is not
840 * really a good thing to do, but can happen if someone tries using ncurses
841 * with the readline library. The problem we are fixing is that when
842 * tgetent calls setupterm, the resulting Ottyb struct in cur_term is
843 * zeroed. A subsequent call to endwin uses the zeroed terminal settings
844 * rather than the ones saved in initscr. So we check if cur_term appears
845 * to contain terminal settings for the same output file as our current
846 * call - and copy those terminal settings. (SVr4 curses does not do this,
847 * however applications that are working around the problem will still work
848 * properly with this feature).
852 && termp->Filedes == Filedes
853 && termp->_termname != 0
854 && !strcmp(termp->_termname, myname)
855 && _nc_name_match(TerminalType(termp).term_names, myname, "|")) {
856 T(("reusing existing terminal information and mode-settings"));
858 #ifdef USE_TERM_DRIVER
859 TCB = (TERMINAL_CONTROL_BLOCK *) termp;
862 #ifdef USE_TERM_DRIVER
863 TERMINAL_CONTROL_BLOCK *my_tcb;
865 if ((my_tcb = typeCalloc(TERMINAL_CONTROL_BLOCK, 1)) != 0)
866 termp = &(my_tcb->term);
870 termp = typeCalloc(TERMINAL, 1);
873 ret_error1(TGETENT_ERR,
874 "Not enough memory to create terminal structure.\n",
875 myname, free(myname));
877 ++_nc_globals.terminal_count;
884 limit = _nc_globals.getstr_limit;
887 if (limit < sysconf(_SC_LINE_MAX))
888 limit = sysconf(_SC_LINE_MAX);
890 if (_nc_globals.getstr_limit < (int) limit)
891 _nc_globals.getstr_limit = (int) limit;
893 #endif /* HAVE_SYSCONF */
894 T(("using %d for getstr limit", _nc_globals.getstr_limit));
896 #ifdef USE_TERM_DRIVER
899 * _nc_get_driver() will call td_CanHandle() for each driver, and win_driver
900 * needs file descriptor to do the test, so set it before calling.
902 termp->Filedes = (short) Filedes;
903 TCB = (TERMINAL_CONTROL_BLOCK *) termp;
904 code = _nc_globals.term_driver(TCB, myname, errret);
906 termp->_termname = strdup(myname);
908 ret_error1(errret ? *errret : TGETENT_ERR,
909 "Could not find any driver to handle terminal.\n",
910 myname, free(myname));
913 #if NCURSES_USE_DATABASE || NCURSES_USE_TERMCAP
914 status = _nc_setup_tinfo(myname, &TerminalType(termp));
915 T(("_nc_setup_tinfo returns %d", status));
917 T(("no database available"));
921 /* try fallback list if entry on disk */
922 if (status != TGETENT_YES) {
923 const TERMTYPE2 *fallback = _nc_fallback2(myname);
926 T(("found fallback entry"));
927 _nc_copy_termtype2(&(TerminalType(termp)), fallback);
928 status = TGETENT_YES;
932 if (status != TGETENT_YES) {
934 if (status == TGETENT_ERR) {
936 ret_error0(status, "terminals database is inaccessible\n");
937 } else if (status == TGETENT_NO) {
938 ret_error1(status, "unknown terminal type.\n",
939 myname, free(myname));
942 ret_error0(status, "unexpected return-code\n");
945 #if NCURSES_EXT_NUMBERS
946 _nc_export_termtype2(&termp->type, &TerminalType(termp));
952 termp->Filedes = (short) Filedes;
953 termp->_termname = strdup(myname);
957 if (VALID_STRING(command_character))
958 _nc_tinfo_cmdch(termp, UChar(*command_character));
961 * If an application calls setupterm() rather than initscr() or
962 * newterm(), we will not have the def_prog_mode() call in
963 * _nc_setupscreen(). Do it now anyway, so we can initialize the
964 * baudrate. Also get the shell-mode so that erasechar() works.
966 if (NC_ISATTY(Filedes)) {
967 NCURSES_SP_NAME(def_shell_mode) (NCURSES_SP_ARG);
968 NCURSES_SP_NAME(def_prog_mode) (NCURSES_SP_ARG);
969 NCURSES_SP_NAME(baudrate) (NCURSES_SP_ARG);
975 #ifdef USE_TERM_DRIVER
977 NCURSES_SP_NAME(set_curterm) (sp, termp);
978 TCB->drv->td_init(TCB);
984 * We should always check the screensize, just in case.
986 TINFO_GET_SIZE(sp, termp, ptrLines(sp), ptrCols(sp));
989 *errret = TGETENT_YES;
991 #ifndef USE_TERM_DRIVER
994 * BSD 4.3's termcap contains mis-typed "gn" for wy99. Do a sanity
995 * check before giving up.
997 if ((VALID_STRING(cursor_address)
998 || (VALID_STRING(cursor_down) && VALID_STRING(cursor_home)))
999 && VALID_STRING(clear_screen)) {
1000 ret_error1(TGETENT_YES, "terminal is not really generic.\n",
1001 myname, free(myname));
1004 ret_error1(TGETENT_NO, "I need something more specific.\n",
1005 myname, free(myname));
1007 } else if (hard_copy) {
1008 ret_error1(TGETENT_YES, "I can't handle hardcopy terminals.\n",
1009 myname, free(myname));
1018 * Returns a non-null pointer unless a new screen should be allocated because
1019 * no match was found in the pre-screen cache.
1021 NCURSES_EXPORT(SCREEN *)
1022 _nc_find_prescr(void)
1026 pthread_t id = GetThreadID();
1027 for (p = _nc_prescreen.allocated; p != 0; p = p->next) {
1037 * Tells ncurses to forget that this thread was associated with the pre-screen
1038 * cache. It does not modify the pre-screen cache itself, since that is used
1039 * for creating new screens.
1041 NCURSES_EXPORT(void)
1042 _nc_forget_prescr(void)
1044 PRESCREEN_LIST *p, *q;
1045 pthread_t id = GetThreadID();
1046 _nc_lock_global(screen);
1047 for (p = _nc_prescreen.allocated, q = 0; p != 0; q = p, p = p->next) {
1052 _nc_prescreen.allocated = p->next;
1058 _nc_unlock_global(screen);
1060 #endif /* USE_PTHREADS */
1062 #if NCURSES_SP_FUNCS
1064 * In case of handling multiple screens, we need to have a screen before
1065 * initialization in _nc_setupscreen takes place. This is to extend the
1066 * substitute for some of the stuff in _nc_prescreen, especially for slk and
1067 * ripoff handling which should be done per screen.
1069 NCURSES_EXPORT(SCREEN *)
1075 T((T_CALLED("new_prescr()")));
1077 _nc_lock_global(screen);
1078 if ((sp = _nc_find_prescr()) == 0) {
1079 sp = _nc_alloc_screen_sp();
1080 T(("_nc_alloc_screen_sp %p", (void *) sp));
1083 PRESCREEN_LIST *p = typeCalloc(PRESCREEN_LIST, 1);
1085 p->id = GetThreadID();
1087 p->next = _nc_prescreen.allocated;
1088 _nc_prescreen.allocated = p;
1091 _nc_prescreen.allocated = sp;
1093 sp->rsp = sp->rippedoff;
1094 sp->_filtered = _nc_prescreen.filter_mode;
1095 sp->_use_env = _nc_prescreen.use_env;
1096 #if NCURSES_NO_PADDING
1097 sp->_no_padding = _nc_prescreen._no_padding;
1101 sp->_prescreen = TRUE;
1104 sp->_TABSIZE = _nc_prescreen._TABSIZE;
1105 sp->_ESCDELAY = _nc_prescreen._ESCDELAY;
1109 T(("_nc_alloc_screen_sp %p (reuse)", (void *) sp));
1111 _nc_unlock_global(screen);
1116 #ifdef USE_TERM_DRIVER
1118 * This entrypoint is called from tgetent() to allow a special case of reusing
1119 * the same TERMINAL data (see comment).
1122 _nc_setupterm(const char *tname,
1128 TERMINAL *termp = 0;
1130 _nc_init_pthreads();
1131 _nc_lock_global(prescreen);
1133 if (TINFO_SETUP_TERM(&termp, tname, Filedes, errret, reuse) == OK) {
1134 _nc_forget_prescr();
1135 if (NCURSES_SP_NAME(set_curterm) (CURRENT_SCREEN_PRE, termp) != 0) {
1139 _nc_unlock_global(prescreen);
1146 * setupterm(termname, Filedes, errret)
1148 * Find and read the appropriate object file for the terminal
1149 * Make cur_term point to the structure.
1152 setupterm(const char *tname, int Filedes, int *errret)
1155 return _nc_setupterm(tname, Filedes, errret, FALSE);