1 /****************************************************************************
2 * Copyright 2018-2023,2024 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 1.235 2024/04/13 20:35:14 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 */
296 #if defined(USE_CHECK_SIZE) && defined(user6) && defined(user7)
298 skip_csi(const char *value)
300 if (UChar(*value) == CSI_CHR) {
302 } else if (*value == ESC_CHR && value[1] == L_BLOCK) {
309 is_expected(const char *value, const char *expected)
312 if (VALID_STRING(value)) {
313 const char *skipped = skip_csi(value);
314 if (skipped != value) {
315 if (!strcmp(skipped, expected))
323 get_position(TERMINAL *termp, int fd, int *row, int *col)
326 size_t need = strlen(user7);
329 have = (int) write(fd, user7, need);
331 if (have == (int) need) {
339 s = memset(buf, '\0', sizeof(buf));
341 size_t ask = (sizeof(buf) - 1 - (size_t) (s - buf));
342 int got = (int) read(fd, s, ask);
347 } while (strchr(buf, 'R') == NULL && (size_t) (s + 1 - buf) < sizeof(buf));
348 T(("CPR response %s", _nc_visbuf(buf)));
349 skipped = skip_csi(buf);
353 && (scanned = sscanf(skip_csi(buf), "%d;%d%c", &y, &x, &cc)) == 3
360 T(("get_position %s %d,%d", result ? "OK" : "ERR", *row, *col));
365 set_position(NCURSES_SP_DCLx TERMINAL *termp, int row, int col)
368 char *actual = TIPARM_2(cursor_address, row, col);
369 T((T_CALLED("set_position %d,%d)"), row, col));
370 if (NCURSES_SP_NAME(_nc_putp) (NCURSES_SP_ARGx "set_position", actual) == OK)
372 NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG);
377 * This is a little more complicated than one might expect, because we do this
378 * before setting up the terminal modes, etc., and cannot use the timeout or
379 * buffering functions.
381 * We check if the terminal description has the ECMA-48 CPR (cursor position
382 * report) in u7 and the response in u6. The two variations of is_expected()
383 * cover the termcap style and terminfo style, and are equivalent as far as we
384 * are concerned. For analyzing the response, we wait (a short time) for 'R'
385 * to be echoed, and then check if we received two integers in the response.
387 * In principle, this could run on "any" ECMA-48 terminal, but in practice,
388 * there is a scenario using GNU screen where it uses ncurses with a partially
389 * configured pseudo-terminal, and the CPR response goes to the wrong place.
390 * So we do a simple check to exclude pseudo-terminals.
393 _nc_check_screensize(NCURSES_SP_DCLx TERMINAL *termp, int *linep, int *colp)
395 int fd = termp->Filedes;
399 if (IsRealTty(fd, name)
400 && VALID_STRING(cursor_address)
401 && is_expected(user7, "6n")
402 && (is_expected(user6, "%i%d;%dR") ||
403 is_expected(user6, "%i%p1%d;%p2%dR"))
404 && GET_TTY(fd, &saved) == OK) {
405 int current_y = -1, current_x = -1;
406 int updated_y = -1, updated_x = -1;
413 NCURSES_SP_NAME(baudrate) (NCURSES_SP_ARG);
417 T(("checking screensize of %s", name));
418 alter.c_lflag &= (unsigned) ~(ECHO | ICANON | ISIG | IEXTEN);
419 alter.c_iflag &= (unsigned) ~(IXON | BRKINT | PARMRK);
420 alter.c_cc[VMIN] = 0;
421 alter.c_cc[VTIME] = 1;
424 if (get_position(termp, fd, ¤t_y, ¤t_x)
425 && set_position(NCURSES_SP_ARGx termp, 9999, 9999)
426 && get_position(termp, fd, &updated_y, &updated_x)) {
429 set_position(NCURSES_SP_ARGx termp, current_y, current_x);
431 /* restore tty modes */
435 _nc_default_screensize(termp, linep, colp);
437 #else /* !USE_CHECK_SIZE */
438 #define _nc_check_screensize(sp, termp, linep, colp) /* nothing */
440 #endif /* !(defined(USE_TERM_DRIVER) || defined(EXP_WIN32_DRIVER)) */
443 _nc_get_screensize(SCREEN *sp,
444 #ifdef USE_TERM_DRIVER
447 int *linep, int *colp)
448 /* Obtain lines/columns values from the environment and/or terminfo entry */
450 #ifdef USE_TERM_DRIVER
451 TERMINAL_CONTROL_BLOCK *TCB;
454 assert(termp != 0 && linep != 0 && colp != 0);
455 TCB = (TERMINAL_CONTROL_BLOCK *) termp;
457 my_tabsize = TCB->info.tabsize;
458 TCB->drv->td_size(TCB, linep, colp);
462 sp->_TABSIZE = my_tabsize;
466 TABSIZE = my_tabsize;
468 T(("TABSIZE = %d", my_tabsize));
469 #else /* !USE_TERM_DRIVER */
470 TERMINAL *termp = cur_term;
472 bool useEnv = _nc_prescreen.use_env;
473 bool useTioctl = _nc_prescreen.use_tioctl;
475 T((T_CALLED("_nc_get_screensize (%p)"), sp));
476 #ifdef EXP_WIN32_DRIVER
477 /* If we are here, then Windows console is used in terminfo mode.
478 We need to figure out the size using the console API
480 _nc_console_size(linep, colp);
481 T(("screen size: winconsole lines = %d columns = %d", *linep, *colp));
483 /* figure out the size of the screen */
484 T(("screen size: terminfo lines = %d columns = %d", lines, columns));
486 *linep = (int) lines;
487 *colp = (int) columns;
492 useEnv = sp->_use_env;
493 useTioctl = sp->use_tioctl;
497 T(("useEnv:%d useTioctl:%d", useEnv, useTioctl));
498 if (useEnv || useTioctl) {
502 _scrsize(screendata);
503 *colp = screendata[0];
504 *linep = ((sp != 0 && sp->_filtered)
507 T(("EMX screen size: environment LINES = %d COLUMNS = %d",
512 /* try asking the OS */
513 if (!NC_ISATTY(cur_term->Filedes)) {
518 if (ioctl(cur_term->Filedes, IOCTL_WINSIZE, &size) >= 0) {
519 *linep = ((sp != 0 && sp->_filtered)
521 : WINSIZE_ROWS(size));
522 *colp = WINSIZE_COLS(size);
523 T(("SYS screen size: environment LINES = %d COLUMNS = %d",
530 #endif /* HAVE_SIZECHANGE */
537 * If environment variables are used, update them.
539 if ((sp == 0 || !sp->_filtered) && _nc_getenv_num("LINES") > 0) {
540 _nc_setenv_num("LINES", *linep);
542 if (_nc_getenv_num("COLUMNS") > 0) {
543 _nc_setenv_num("COLUMNS", *colp);
548 * Finally, look for environment variables.
550 * Solaris lets users override either dimension with an environment
553 if ((value = _nc_getenv_num("LINES")) > 0) {
555 T(("screen size: environment LINES = %d", *linep));
557 if ((value = _nc_getenv_num("COLUMNS")) > 0) {
559 T(("screen size: environment COLUMNS = %d", *colp));
562 _nc_default_screensize(termp, linep, colp);
564 _nc_check_screensize(NCURSES_SP_ARGx termp, linep, colp);
568 * Put the derived values back in the screen-size caps, so
569 * tigetnum() and tgetnum() will do the right thing.
571 lines = (NCURSES_INT2) (*linep);
572 columns = (NCURSES_INT2) (*colp);
573 #if NCURSES_EXT_NUMBERS
574 #define OldNumber(termp,name) \
575 (termp)->type.Numbers[(&name - (termp)->type2.Numbers)]
576 OldNumber(termp, lines) = (short) (*linep);
577 OldNumber(termp, columns) = (short) (*colp);
580 _nc_check_screensize(NCURSES_SP_ARGx termp, linep, colp);
583 T(("screen size is %dx%d", *linep, *colp));
585 if (VALID_NUMERIC(init_tabs))
586 my_tabsize = (int) init_tabs;
592 sp->_TABSIZE = my_tabsize;
594 TABSIZE = my_tabsize;
596 T(("TABSIZE = %d", TABSIZE));
598 #endif /* USE_TERM_DRIVER */
603 _nc_update_screensize(SCREEN *sp)
608 #ifdef USE_TERM_DRIVER
614 CallDriver_2(sp, td_getsize, &old_lines, &old_cols);
617 TERMINAL *termp = cur_term;
618 int old_lines = lines;
619 int old_cols = columns;
623 TINFO_GET_SIZE(sp, sp->_term, &new_lines, &new_cols);
625 * See is_term_resized() and resizeterm().
626 * We're doing it this way because those functions belong to the upper
627 * ncurses library, while this resides in the lower terminfo library.
629 if (sp->_resize != 0) {
630 if ((new_lines != old_lines) || (new_cols != old_cols)) {
631 sp->_resize(NCURSES_SP_ARGx new_lines, new_cols);
632 } else if (sp->_sig_winch && (sp->_ungetch != 0)) {
633 sp->_ungetch(SP_PARM, KEY_RESIZE); /* so application can know this */
635 sp->_sig_winch = FALSE;
639 #endif /* USE_SIZECHANGE */
641 /****************************************************************************
645 ****************************************************************************/
647 #if NCURSES_USE_DATABASE || NCURSES_USE_TERMCAP
649 * Return 1 if entry found, 0 if not found, -1 if database not accessible,
650 * just like tgetent().
653 _nc_setup_tinfo(const char *const tn, TERMTYPE2 *const tp)
655 char filename[PATH_MAX];
656 int status = _nc_read_entry2(tn, filename, tp);
659 * If we have an entry, force all of the cancelled strings to null
660 * pointers so we don't have to test them in the rest of the library.
661 * (The terminfo compiler bypasses this logic, since it must know if
662 * a string is cancelled, for merging entries).
664 if (status == TGETENT_YES) {
666 T(("_nc_setup_tinfo - resetting invalid booleans/strings"));
667 for_each_boolean(n, tp) {
668 if (!VALID_BOOLEAN(tp->Booleans[n]))
669 tp->Booleans[n] = FALSE;
671 for_each_string(n, tp) {
672 if (tp->Strings[n] == CANCELLED_STRING)
673 tp->Strings[n] = ABSENT_STRING;
681 * Take the real command character out of the CC environment variable
682 * and substitute it in for the prototype given in 'command_character'.
685 _nc_tinfo_cmdch(TERMINAL *termp, int proto)
690 * Only use the character if the string is a single character,
691 * since it is fairly common for developers to set the C compiler
692 * name as an environment variable - using the same symbol.
694 if ((tmp = getenv("CC")) != 0 && strlen(tmp) == 1) {
698 for_each_string(i, &(termp->type)) {
699 tmp = termp->type.Strings[i];
700 if (VALID_STRING(tmp)) {
701 for (; *tmp; ++tmp) {
702 if (UChar(*tmp) == proto)
711 * Find the locale which is in effect.
713 NCURSES_EXPORT(char *)
719 * This is preferable to using getenv() since it ensures that we are using
720 * the locale which was actually initialized by the application.
722 env = setlocale(LC_CTYPE, 0);
724 if (((env = getenv("LANG")) != 0 && *env != '\0')
725 || ((env = getenv("LC_CTYPE")) != 0 && *env != '\0')
726 || ((env = getenv("LC_ALL")) != 0 && *env != '\0')) {
730 T(("_nc_get_locale %s", _nc_visbuf(env)));
735 * Check if we are running in a UTF-8 locale.
738 _nc_unicode_locale(void)
740 static bool initialized = FALSE;
741 static int result = 0;
744 #if defined(_NC_WINDOWS) && USE_WIDEC_SUPPORT
746 #elif HAVE_LANGINFO_CODESET
747 char *env = nl_langinfo(CODESET);
748 result = !strcmp(env, "UTF-8");
749 T(("_nc_unicode_locale(%s) ->%d", env, result));
751 char *env = _nc_get_locale();
753 if (strstr(env, ".UTF-8") != 0) {
755 T(("_nc_unicode_locale(%s) ->%d", env, result));
764 #define CONTROL_N(s) ((s) != 0 && strstr(s, "\016") != 0)
765 #define CONTROL_O(s) ((s) != 0 && strstr(s, "\017") != 0)
768 * Check for known broken cases where a UTF-8 locale breaks the alternate
772 _nc_locale_breaks_acs(TERMINAL *termp)
774 const char *env_name = "NCURSES_NO_UTF8_ACS";
779 T((T_CALLED("_nc_locale_breaks_acs:%d"), result));
780 if (getenv(env_name) != 0) {
781 result = _nc_getenv_num(env_name);
782 } else if ((value = tigetnum("U8")) >= 0) {
783 result = value; /* use extension feature */
784 } else if ((env = getenv("TERM")) != 0) {
785 if (strstr(env, "linux")) {
786 result = 1; /* always broken */
787 } else if (strstr(env, "screen") != 0
788 && ((env = getenv("TERMCAP")) != 0
789 && strstr(env, "screen") != 0)
790 && strstr(env, "hhII00") != 0) {
791 if (CONTROL_N(enter_alt_charset_mode) ||
792 CONTROL_O(enter_alt_charset_mode) ||
793 CONTROL_N(set_attributes) ||
794 CONTROL_O(set_attributes)) {
803 TINFO_SETUP_TERM(TERMINAL **tp,
809 #ifdef USE_TERM_DRIVER
810 TERMINAL_CONTROL_BLOCK *TCB = 0;
819 #ifdef USE_TERM_DRIVER
820 T((T_CALLED("_nc_setupterm_ex(%p,%s,%d,%p)"),
821 (void *) tp, _nc_visbuf(tname), Filedes, (void *) errret));
824 ret_error0(TGETENT_ERR,
825 "Invalid parameter, internal error.\n");
830 T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, (void *) errret));
834 tname = getenv("TERM");
835 #if defined(EXP_WIN32_DRIVER)
836 if (!VALID_TERM_ENV(tname, NO_TERMINAL)) {
837 T(("Failure with TERM=%s", NonNull(tname)));
838 ret_error0(TGETENT_ERR, "TERM environment variable not set.\n");
840 #elif defined(USE_TERM_DRIVER)
841 if (!NonEmpty(tname))
844 if (!NonEmpty(tname)) {
845 T(("Failure with TERM=%s", NonNull(tname)));
846 ret_error0(TGETENT_ERR, "TERM environment variable not set.\n");
850 myname = strdup(tname);
851 if (myname == NULL || strlen(myname) > MAX_NAME_SIZE) {
852 ret_error(TGETENT_ERR,
853 "TERM environment must be 1..%d characters.\n",
858 T(("your terminal name is %s", myname));
861 * Allow output redirection. This is what SVr3 does. If stdout is
862 * directed to a file, screen updates go to standard error.
864 if (Filedes == STDOUT_FILENO && !NC_ISATTY(Filedes))
865 Filedes = STDERR_FILENO;
866 #if defined(EXP_WIN32_DRIVER)
867 if (Filedes != STDERR_FILENO && NC_ISATTY(Filedes))
868 _setmode(Filedes, _O_BINARY);
872 * Check if we have already initialized to use this terminal. If so, we
873 * do not need to re-read the terminfo entry, or obtain TTY settings.
875 * This is an improvement on SVr4 curses. If an application mixes curses
876 * and termcap calls, it may call both initscr and tgetent. This is not
877 * really a good thing to do, but can happen if someone tries using ncurses
878 * with the readline library. The problem we are fixing is that when
879 * tgetent calls setupterm, the resulting Ottyb struct in cur_term is
880 * zeroed. A subsequent call to endwin uses the zeroed terminal settings
881 * rather than the ones saved in initscr. So we check if cur_term appears
882 * to contain terminal settings for the same output file as our current
883 * call - and copy those terminal settings. (SVr4 curses does not do this,
884 * however applications that are working around the problem will still work
885 * properly with this feature).
889 && termp->Filedes == Filedes
890 && termp->_termname != 0
891 && !strcmp(termp->_termname, myname)
892 && _nc_name_match(TerminalType(termp).term_names, myname, "|")) {
893 T(("reusing existing terminal information and mode-settings"));
895 #ifdef USE_TERM_DRIVER
896 TCB = (TERMINAL_CONTROL_BLOCK *) termp;
899 #ifdef USE_TERM_DRIVER
900 TERMINAL_CONTROL_BLOCK *my_tcb;
902 if ((my_tcb = typeCalloc(TERMINAL_CONTROL_BLOCK, 1)) != 0)
903 termp = &(my_tcb->term);
907 termp = typeCalloc(TERMINAL, 1);
910 ret_error1(TGETENT_ERR,
911 "Not enough memory to create terminal structure.\n",
912 myname, free(myname));
914 ++_nc_globals.terminal_count;
921 limit = _nc_globals.getstr_limit;
924 if (limit < sysconf(_SC_LINE_MAX))
925 limit = sysconf(_SC_LINE_MAX);
927 if (_nc_globals.getstr_limit < (int) limit)
928 _nc_globals.getstr_limit = (int) limit;
930 #endif /* HAVE_SYSCONF */
931 T(("using %d for getstr limit", _nc_globals.getstr_limit));
933 #ifdef USE_TERM_DRIVER
936 * _nc_get_driver() will call td_CanHandle() for each driver, and win_driver
937 * needs file descriptor to do the test, so set it before calling.
939 termp->Filedes = (short) Filedes;
940 TCB = (TERMINAL_CONTROL_BLOCK *) termp;
941 code = _nc_globals.term_driver(TCB, myname, errret);
943 termp->_termname = strdup(myname);
945 ret_error1(errret ? *errret : TGETENT_ERR,
946 "Could not find any driver to handle terminal.\n",
947 myname, free(myname));
950 #if NCURSES_USE_DATABASE || NCURSES_USE_TERMCAP
951 status = _nc_setup_tinfo(myname, &TerminalType(termp));
952 T(("_nc_setup_tinfo returns %d", status));
954 T(("no database available"));
958 /* try fallback list if entry on disk */
959 if (status != TGETENT_YES) {
960 const TERMTYPE2 *fallback = _nc_fallback2(myname);
963 T(("found fallback entry"));
964 _nc_copy_termtype2(&(TerminalType(termp)), fallback);
965 status = TGETENT_YES;
969 if (status != TGETENT_YES) {
971 if (status == TGETENT_ERR) {
973 ret_error0(status, "terminals database is inaccessible\n");
974 } else if (status == TGETENT_NO) {
975 ret_error1(status, "unknown terminal type.\n",
976 myname, free(myname));
979 ret_error0(status, "unexpected return-code\n");
982 #if NCURSES_EXT_NUMBERS
983 _nc_export_termtype2(&termp->type, &TerminalType(termp));
989 termp->Filedes = (short) Filedes;
990 termp->_termname = strdup(myname);
994 if (VALID_STRING(command_character))
995 _nc_tinfo_cmdch(termp, UChar(*command_character));
998 * If an application calls setupterm() rather than initscr() or
999 * newterm(), we will not have the def_prog_mode() call in
1000 * _nc_setupscreen(). Do it now anyway, so we can initialize the
1001 * baudrate. Also get the shell-mode so that erasechar() works.
1003 if (NC_ISATTY(Filedes)) {
1004 NCURSES_SP_NAME(def_shell_mode) (NCURSES_SP_ARG);
1005 NCURSES_SP_NAME(def_prog_mode) (NCURSES_SP_ARG);
1006 NCURSES_SP_NAME(baudrate) (NCURSES_SP_ARG);
1012 #ifdef USE_TERM_DRIVER
1014 NCURSES_SP_NAME(set_curterm) (sp, termp);
1015 TCB->drv->td_init(TCB);
1021 * We should always check the screensize, just in case.
1023 TINFO_GET_SIZE(sp, termp, ptrLines(sp), ptrCols(sp));
1026 *errret = TGETENT_YES;
1028 #ifndef USE_TERM_DRIVER
1031 * BSD 4.3's termcap contains mis-typed "gn" for wy99. Do a sanity
1032 * check before giving up.
1034 if ((VALID_STRING(cursor_address)
1035 || (VALID_STRING(cursor_down) && VALID_STRING(cursor_home)))
1036 && VALID_STRING(clear_screen)) {
1037 ret_error1(TGETENT_YES, "terminal is not really generic.\n",
1038 myname, free(myname));
1041 ret_error1(TGETENT_NO, "I need something more specific.\n",
1042 myname, free(myname));
1044 } else if (hard_copy) {
1045 ret_error1(TGETENT_YES, "I can't handle hardcopy terminals.\n",
1046 myname, free(myname));
1055 * Returns a non-null pointer unless a new screen should be allocated because
1056 * no match was found in the pre-screen cache.
1058 NCURSES_EXPORT(SCREEN *)
1059 _nc_find_prescr(void)
1063 pthread_t id = GetThreadID();
1064 for (p = _nc_prescreen.allocated; p != 0; p = p->next) {
1074 * Tells ncurses to forget that this thread was associated with the pre-screen
1075 * cache. It does not modify the pre-screen cache itself, since that is used
1076 * for creating new screens.
1078 NCURSES_EXPORT(void)
1079 _nc_forget_prescr(void)
1081 PRESCREEN_LIST *p, *q;
1082 pthread_t id = GetThreadID();
1083 _nc_lock_global(screen);
1084 for (p = _nc_prescreen.allocated, q = 0; p != 0; q = p, p = p->next) {
1089 _nc_prescreen.allocated = p->next;
1095 _nc_unlock_global(screen);
1097 #endif /* USE_PTHREADS */
1099 #if NCURSES_SP_FUNCS
1101 * In case of handling multiple screens, we need to have a screen before
1102 * initialization in _nc_setupscreen takes place. This is to extend the
1103 * substitute for some of the stuff in _nc_prescreen, especially for slk and
1104 * ripoff handling which should be done per screen.
1106 NCURSES_EXPORT(SCREEN *)
1112 T((T_CALLED("new_prescr()")));
1114 _nc_lock_global(screen);
1115 if ((sp = _nc_find_prescr()) == 0) {
1116 sp = _nc_alloc_screen_sp();
1117 T(("_nc_alloc_screen_sp %p", (void *) sp));
1120 PRESCREEN_LIST *p = typeCalloc(PRESCREEN_LIST, 1);
1122 p->id = GetThreadID();
1124 p->next = _nc_prescreen.allocated;
1125 _nc_prescreen.allocated = p;
1128 _nc_prescreen.allocated = sp;
1130 sp->rsp = sp->rippedoff;
1131 sp->_filtered = _nc_prescreen.filter_mode;
1132 sp->_use_env = _nc_prescreen.use_env;
1133 #if NCURSES_NO_PADDING
1134 sp->_no_padding = _nc_prescreen._no_padding;
1138 sp->_prescreen = TRUE;
1141 sp->_TABSIZE = _nc_prescreen._TABSIZE;
1142 sp->_ESCDELAY = _nc_prescreen._ESCDELAY;
1146 T(("_nc_alloc_screen_sp %p (reuse)", (void *) sp));
1148 _nc_unlock_global(screen);
1153 #ifdef USE_TERM_DRIVER
1155 * This entrypoint is called from tgetent() to allow a special case of reusing
1156 * the same TERMINAL data (see comment).
1159 _nc_setupterm(const char *tname,
1165 TERMINAL *termp = 0;
1167 _nc_init_pthreads();
1168 _nc_lock_global(prescreen);
1170 if (TINFO_SETUP_TERM(&termp, tname, Filedes, errret, reuse) == OK) {
1171 _nc_forget_prescr();
1172 if (NCURSES_SP_NAME(set_curterm) (CURRENT_SCREEN_PRE, termp) != 0) {
1176 _nc_unlock_global(prescreen);
1183 * setupterm(termname, Filedes, errret)
1185 * Find and read the appropriate object file for the terminal
1186 * Make cur_term point to the structure.
1189 setupterm(const char *tname, int Filedes, int *errret)
1192 return _nc_setupterm(tname, Filedes, errret, FALSE);