/****************************************************************************
- * Copyright (c) 1998-2001,2002 Free Software Foundation, Inc. *
+ * Copyright 2018-2023,2024 Thomas E. Dickey *
+ * Copyright 1998-2016,2017 Free Software Foundation, Inc. *
* *
* Permission is hereby granted, free of charge, to any person obtaining a *
* copy of this software and associated documentation files (the *
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * and: Thomas E. Dickey 1996-on *
+ * and: Juergen Pfeifer 2009 *
****************************************************************************/
/*
* Terminal setup routines common to termcap and terminfo:
*
* use_env(bool)
+ * use_tioctl(bool)
* setupterm(char *, int, int *)
*/
#include <curses.priv.h>
#include <tic.h> /* for MAX_NAME_SIZE */
-#include <term_entry.h>
-#if SVR4_TERMIO && !defined(_POSIX_SOURCE)
-#define _POSIX_SOURCE
+#if HAVE_LOCALE_H
+#include <locale.h>
#endif
-#include <term.h> /* lines, columns, cur_term */
-
-MODULE_ID("$Id: lib_setup.c,v 1.70 2002/10/12 21:50:18 tom Exp $")
+MODULE_ID("$Id: lib_setup.c,v 1.239 2024/04/14 17:03:40 tom Exp $")
/****************************************************************************
*
#endif
#if NEED_PTEM_H
- /* On SCO, they neglected to define struct winsize in termios.h -- it's only
+ /* On SCO, they neglected to define struct winsize in termios.h -- it is only
* in termio.h and ptem.h (the former conflicts with other definitions).
*/
# include <sys/stream.h>
# include <sys/ptem.h>
#endif
+#if HAVE_LANGINFO_CODESET
+#include <langinfo.h>
+#endif
+
/*
* SCO defines TIOCGSIZE and the corresponding struct. Other systems (SunOS,
* Solaris, IRIX) define TIOCGWINSZ and struct winsize.
# endif
#endif
-static int _use_env = TRUE;
+/*
+ * Reduce explicit use of "cur_term" global variable.
+ */
+#undef CUR
+#define CUR TerminalType(termp).
+
+/*
+ * Wrap global variables in this module.
+ */
+#if USE_REENTRANT
+
+NCURSES_EXPORT(char *)
+NCURSES_PUBLIC_VAR(ttytype) (void)
+{
+ static char empty[] = "";
+ char *result = empty;
+
+#if NCURSES_SP_FUNCS
+ if (CURRENT_SCREEN) {
+ TERMINAL *termp = TerminalOf(CURRENT_SCREEN);
+ if (termp != 0) {
+ result = TerminalType(termp).term_names;
+ }
+ }
+#else
+ if (cur_term != 0) {
+ result = TerminalType(cur_term).term_names;
+ }
+#endif
+ return result;
+}
+
+NCURSES_EXPORT(int *)
+_nc_ptr_Lines(SCREEN *sp)
+{
+ return ptrLines(sp);
+}
+
+NCURSES_EXPORT(int)
+NCURSES_PUBLIC_VAR(LINES) (void)
+{
+ return *_nc_ptr_Lines(CURRENT_SCREEN);
+}
+
+NCURSES_EXPORT(int *)
+_nc_ptr_Cols(SCREEN *sp)
+{
+ return ptrCols(sp);
+}
+
+NCURSES_EXPORT(int)
+NCURSES_PUBLIC_VAR(COLS) (void)
+{
+ return *_nc_ptr_Cols(CURRENT_SCREEN);
+}
+
+NCURSES_EXPORT(int *)
+_nc_ptr_Tabsize(SCREEN *sp)
+{
+ return ptrTabsize(sp);
+}
+
+NCURSES_EXPORT(int)
+NCURSES_PUBLIC_VAR(TABSIZE) (void)
+{
+ return *_nc_ptr_Tabsize(CURRENT_SCREEN);
+}
+#else
+NCURSES_EXPORT_VAR(char) ttytype[NAMESIZE] = "";
+NCURSES_EXPORT_VAR(int) LINES = 0;
+NCURSES_EXPORT_VAR(int) COLS = 0;
+NCURSES_EXPORT_VAR(int) TABSIZE = 8;
+#endif
+
+#if NCURSES_EXT_FUNCS
+NCURSES_EXPORT(int)
+NCURSES_SP_NAME(set_tabsize) (NCURSES_SP_DCLx int value)
+{
+ int code = OK;
+ if (value <= 0) {
+ code = ERR;
+ } else {
+#if USE_REENTRANT
+ if (SP_PARM) {
+ SP_PARM->_TABSIZE = value;
+ } else {
+ code = ERR;
+ }
+#else
+ (void) SP_PARM;
+ TABSIZE = value;
+#endif
+ }
+ return code;
+}
+
+#if NCURSES_SP_FUNCS
+NCURSES_EXPORT(int)
+set_tabsize(int value)
+{
+ return NCURSES_SP_NAME(set_tabsize) (CURRENT_SCREEN, value);
+}
+#endif
+#endif /* NCURSES_EXT_FUNCS */
+
+#if USE_SIGWINCH
+/*
+ * If we have a pending SIGWINCH, set the flag in each screen.
+ */
+NCURSES_EXPORT(int)
+_nc_handle_sigwinch(SCREEN *sp)
+{
+ SCREEN *scan;
+
+ if (_nc_globals.have_sigwinch) {
+ _nc_globals.have_sigwinch = 0;
+
+ for (each_screen(scan)) {
+ scan->_sig_winch = TRUE;
+ }
+ }
+
+ return (sp ? sp->_sig_winch : 0);
+}
+
+#endif
+
+NCURSES_EXPORT(void)
+NCURSES_SP_NAME(use_env) (NCURSES_SP_DCLx bool f)
+{
+ START_TRACE();
+ T((T_CALLED("use_env(%p,%d)"), (void *) SP_PARM, (int) f));
+#if NCURSES_SP_FUNCS
+ if (IsPreScreen(SP_PARM)) {
+ SP_PARM->_use_env = f;
+ }
+#else
+ _nc_prescreen.use_env = f;
+#endif
+ returnVoid;
+}
-static void do_prototype(void);
+NCURSES_EXPORT(void)
+NCURSES_SP_NAME(use_tioctl) (NCURSES_SP_DCLx bool f)
+{
+ START_TRACE();
+ T((T_CALLED("use_tioctl(%p,%d)"), (void *) SP_PARM, (int) f));
+#if NCURSES_SP_FUNCS
+ if (IsPreScreen(SP_PARM)) {
+ SP_PARM->use_tioctl = f;
+ }
+#else
+ _nc_prescreen.use_tioctl = f;
+#endif
+ returnVoid;
+}
+#if NCURSES_SP_FUNCS
NCURSES_EXPORT(void)
use_env(bool f)
{
- T((T_CALLED("use_env()")));
- _use_env = f;
+ START_TRACE();
+ T((T_CALLED("use_env(%d)"), (int) f));
+ _nc_prescreen.use_env = f;
returnVoid;
}
-NCURSES_EXPORT_VAR(int) LINES = 0;
-NCURSES_EXPORT_VAR(int) COLS = 0;
-NCURSES_EXPORT_VAR(int) TABSIZE = 0;
+NCURSES_EXPORT(void)
+use_tioctl(bool f)
+{
+ START_TRACE();
+ T((T_CALLED("use_tioctl(%d)"), (int) f));
+ _nc_prescreen.use_tioctl = f;
+ returnVoid;
+}
+#endif
+#if !(defined(USE_TERM_DRIVER) || defined(EXP_WIN32_DRIVER))
static void
-_nc_get_screensize(int *linep, int *colp)
-/* Obtain lines/columns values from the environment and/or terminfo entry */
+_nc_default_screensize(TERMINAL *termp, int *linep, int *colp)
{
- /* figure out the size of the screen */
- T(("screen size: terminfo lines = %d columns = %d", lines, columns));
-
- if (!_use_env) {
+ /* if we can't get dynamic info about the size, use static */
+ if (*linep <= 0) {
*linep = (int) lines;
+ }
+ if (*colp <= 0) {
*colp = (int) columns;
- } else { /* usually want to query LINES and COLUMNS from environment */
- int value;
+ }
+
+ /* the ultimate fallback, assume fixed 24x80 size */
+ if (*linep <= 0) {
+ *linep = 24;
+ }
+ if (*colp <= 0) {
+ *colp = 80;
+ }
+}
+
+#if defined(USE_CHECK_SIZE) && defined(user6) && defined(user7)
+static const char *
+skip_csi(const char *value)
+{
+ if (UChar(*value) == CSI_CHR) {
+ ++value;
+ } else if (*value == ESC_CHR && value[1] == L_BLOCK) {
+ value += 2;
+ }
+ return value;
+}
+
+static bool
+is_expected(const char *value, const char *expected)
+{
+ bool result = FALSE;
+ if (VALID_STRING(value)) {
+ const char *skipped = skip_csi(value);
+ if (skipped != value) {
+ if (!strcmp(skipped, expected))
+ result = TRUE;
+ }
+ }
+ return result;
+}
- *linep = *colp = 0;
+static bool
+get_position(TERMINAL *termp, int fd, int *row, int *col)
+{
+ bool result = FALSE;
+ size_t need = strlen(user7);
+ int have;
+
+ have = (int) write(fd, user7, need);
+
+ if (have == (int) need) {
+ int y, x;
+ char buf[20];
+ char *s;
+ char cc;
+ const char *skipped;
+ int scanned;
- /* first, look for environment variables */
- if ((value = _nc_getenv_num("LINES")) > 0) {
- *linep = value;
+ s = memset(buf, '\0', sizeof(buf));
+ do {
+ size_t ask = (sizeof(buf) - 1 - (size_t) (s - buf));
+ int got = (int) read(fd, s, ask);
+ if (got == 0)
+ break;
+ s += got;
+ *s = '\0';
+ } while (strchr(buf, 'R') == NULL && (size_t) (s + 1 - buf) < sizeof(buf));
+ T(("CPR response %s", _nc_visbuf(buf)));
+ skipped = skip_csi(buf);
+ cc = '\0';
+ if (skipped != buf
+ && *skipped != '\0'
+ && (scanned = sscanf(skip_csi(buf), "%d;%d%c", &y, &x, &cc)) == 3
+ && (cc == 'R')) {
+ *row = y;
+ *col = x;
+ result = TRUE;
}
- if ((value = _nc_getenv_num("COLUMNS")) > 0) {
- *colp = value;
+ }
+ T(("get_position %s %d,%d", result ? "OK" : "ERR", *row, *col));
+ return result;
+}
+
+static bool
+set_position(NCURSES_SP_DCLx TERMINAL *termp, int row, int col)
+{
+ bool result;
+ char *actual = TIPARM_2(cursor_address, row, col);
+ T((T_CALLED("set_position %d,%d)"), row, col));
+#if NCURSES_SP_FUNCS
+ result = (NCURSES_SP_NAME(_nc_putp) (NCURSES_SP_ARGx "set_position",
+ actual) == OK);
+ NCURSES_SP_NAME(_nc_flush) (NCURSES_SP_ARG);
+#else
+ /* This does not support padding because without sp-funcs, we have only
+ * the interface using stdio, but we are not guaranteed that Filedes
+ * is the same as fileno(stdout).
+ */
+ result = FALSE;
+ if (actual != NULL) {
+ size_t want = strlen(actual);
+ int have = (int) write(termp->Filedes, actual, want);
+ result = ((int) want == have);
+ }
+#endif
+ returnBool(result);
+}
+
+/*
+ * This is a little more complicated than one might expect, because we do this
+ * before setting up the terminal modes, etc., and cannot use the timeout or
+ * buffering functions.
+ *
+ * We check if the terminal description has the ECMA-48 CPR (cursor position
+ * report) in u7 and the response in u6. The two variations of is_expected()
+ * cover the termcap style and terminfo style, and are equivalent as far as we
+ * are concerned. For analyzing the response, we wait (a short time) for 'R'
+ * to be echoed, and then check if we received two integers in the response.
+ *
+ * In principle, this could run on "any" ECMA-48 terminal, but in practice,
+ * there is a scenario using GNU screen where it uses ncurses with a partially
+ * configured pseudo-terminal, and the CPR response goes to the wrong place.
+ * So we do a simple check to exclude pseudo-terminals.
+ */
+static void
+_nc_check_screensize(SCREEN *sp, TERMINAL *termp, int *linep, int *colp)
+{
+ int fd = termp->Filedes;
+ TTY saved;
+ const char *name = NULL;
+
+ if (IsRealTty(fd, name)
+ && VALID_STRING(cursor_address)
+ && is_expected(user7, "6n")
+ && (is_expected(user6, "%i%d;%dR") ||
+ is_expected(user6, "%i%p1%d;%p2%dR"))
+ && GET_TTY(fd, &saved) == OK) {
+ int current_y = -1, current_x = -1;
+ int updated_y = -1, updated_x = -1;
+ TTY alter = saved;
+
+#if NCURSES_SP_FUNCS
+ if (sp == NULL) {
+ sp = new_prescr();
+ sp->_term = termp;
+ NCURSES_SP_NAME(baudrate) (NCURSES_SP_ARG);
}
- T(("screen size: environment LINES = %d COLUMNS = %d", *linep, *colp));
+#else
+ (void) sp;
+#endif
+ T(("trying CPR (u7/u6) with %s", name));
+ alter.c_lflag &= (unsigned) ~(ECHO | ICANON | ISIG | IEXTEN);
+ alter.c_iflag &= (unsigned) ~(IXON | BRKINT | PARMRK);
+ alter.c_cc[VMIN] = 0;
+ alter.c_cc[VTIME] = 1;
+ SET_TTY(fd, &alter);
+
+ if (get_position(termp, fd, ¤t_y, ¤t_x)
+ && set_position(NCURSES_SP_ARGx termp, 9999, 9999)
+ && get_position(termp, fd, &updated_y, &updated_x)) {
+ *linep = updated_y;
+ *colp = updated_x;
+ set_position(NCURSES_SP_ARGx termp, current_y, current_x);
+ }
+ /* restore tty modes */
+ SET_TTY(fd, &saved);
+ } else {
+ T(("NOT trying CPR with fd %d (%s): %s",
+ fd, NonNull(name), NC_ISATTY(fd) ? "tty" : "not a tty"));
+ }
+
+ _nc_default_screensize(termp, linep, colp);
+}
+#else /* !USE_CHECK_SIZE */
+#define _nc_check_screensize(sp, termp, linep, colp) /* nothing */
+#endif
+#endif /* !(defined(USE_TERM_DRIVER) || defined(EXP_WIN32_DRIVER)) */
+
+NCURSES_EXPORT(void)
+_nc_get_screensize(SCREEN *sp,
+#ifdef USE_TERM_DRIVER
+ TERMINAL *termp,
+#endif
+ int *linep, int *colp)
+/* Obtain lines/columns values from the environment and/or terminfo entry */
+{
+#ifdef USE_TERM_DRIVER
+ TERMINAL_CONTROL_BLOCK *TCB;
+ int my_tabsize;
+
+ assert(termp != 0 && linep != 0 && colp != 0);
+ TCB = (TERMINAL_CONTROL_BLOCK *) termp;
+
+ my_tabsize = TCB->info.tabsize;
+ TCB->drv->td_size(TCB, linep, colp);
+
+#if USE_REENTRANT
+ if (sp != 0) {
+ sp->_TABSIZE = my_tabsize;
+ }
+#else
+ (void) sp;
+ TABSIZE = my_tabsize;
+#endif
+ T(("TABSIZE = %d", my_tabsize));
+#else /* !USE_TERM_DRIVER */
+ TERMINAL *termp = cur_term;
+ int my_tabsize;
+ bool useEnv = _nc_prescreen.use_env;
+ bool useTioctl = _nc_prescreen.use_tioctl;
+
+ T((T_CALLED("_nc_get_screensize (%p)"), sp));
+#ifdef EXP_WIN32_DRIVER
+ /* If we are here, then Windows console is used in terminfo mode.
+ We need to figure out the size using the console API
+ */
+ _nc_console_size(linep, colp);
+ T(("screen size: winconsole lines = %d columns = %d", *linep, *colp));
+#else
+ /* figure out the size of the screen */
+ T(("screen size: terminfo lines = %d columns = %d", lines, columns));
+
+ *linep = (int) lines;
+ *colp = (int) columns;
+#endif
+
+#if NCURSES_SP_FUNCS
+ if (sp) {
+ useEnv = sp->_use_env;
+ useTioctl = sp->use_tioctl;
+ }
+#endif
+
+ T(("useEnv:%d useTioctl:%d", useEnv, useTioctl));
+ if (useEnv || useTioctl) {
#ifdef __EMX__
- if (*linep <= 0 || *colp <= 0) {
+ {
int screendata[2];
_scrsize(screendata);
*colp = screendata[0];
- *linep = screendata[1];
+ *linep = ((sp != 0 && sp->_filtered)
+ ? 1
+ : screendata[1]);
T(("EMX screen size: environment LINES = %d COLUMNS = %d",
*linep, *colp));
}
#endif
#if HAVE_SIZECHANGE
- /* if that didn't work, maybe we can try asking the OS */
- if (*linep <= 0 || *colp <= 0) {
- if (isatty(cur_term->Filedes)) {
- STRUCT_WINSIZE size;
-
- errno = 0;
- do {
- if (ioctl(cur_term->Filedes, IOCTL_WINSIZE, &size) < 0
- && errno != EINTR)
- goto failure;
- } while
- (errno == EINTR);
+ /* try asking the OS */
+ if (NC_ISATTY(cur_term->Filedes)) {
+ STRUCT_WINSIZE size;
- /*
- * Solaris lets users override either dimension with an
- * environment variable.
- */
- if (*linep <= 0)
- *linep = WINSIZE_ROWS(size);
- if (*colp <= 0)
+ errno = 0;
+ do {
+ if (ioctl(cur_term->Filedes, IOCTL_WINSIZE, &size) >= 0) {
+ *linep = ((sp != 0 && sp->_filtered)
+ ? 1
+ : WINSIZE_ROWS(size));
*colp = WINSIZE_COLS(size);
- }
- /* FALLTHRU */
- failure:;
+ T(("SYS screen size: environment LINES = %d COLUMNS = %d",
+ *linep, *colp));
+ break;
+ }
+ } while
+ (errno == EINTR);
}
#endif /* HAVE_SIZECHANGE */
- /* if we can't get dynamic info about the size, use static */
- if (*linep <= 0) {
- *linep = (int) lines;
- }
- if (*colp <= 0) {
- *colp = (int) columns;
- }
+ if (useEnv) {
+ int value;
- /* the ultimate fallback, assume fixed 24x80 size */
- if (*linep <= 0) {
- *linep = 24;
- }
- if (*colp <= 0) {
- *colp = 80;
+ if (useTioctl) {
+ /*
+ * If environment variables are used, update them.
+ */
+ if ((sp == 0 || !sp->_filtered) && _nc_getenv_num("LINES") > 0) {
+ _nc_setenv_num("LINES", *linep);
+ }
+ if (_nc_getenv_num("COLUMNS") > 0) {
+ _nc_setenv_num("COLUMNS", *colp);
+ }
+ }
+
+ /*
+ * Finally, look for environment variables.
+ *
+ * Solaris lets users override either dimension with an environment
+ * variable.
+ */
+ if ((value = _nc_getenv_num("LINES")) > 0) {
+ *linep = value;
+ T(("screen size: environment LINES = %d", *linep));
+ }
+ if ((value = _nc_getenv_num("COLUMNS")) > 0) {
+ *colp = value;
+ T(("screen size: environment COLUMNS = %d", *colp));
+ }
+
+ _nc_default_screensize(termp, linep, colp);
+ } else {
+ _nc_check_screensize(sp, termp, linep, colp);
}
/*
* Put the derived values back in the screen-size caps, so
* tigetnum() and tgetnum() will do the right thing.
*/
- lines = (short) (*linep);
- columns = (short) (*colp);
+ lines = (NCURSES_INT2) (*linep);
+ columns = (NCURSES_INT2) (*colp);
+#if NCURSES_EXT_NUMBERS
+#define OldNumber(termp,name) \
+ (termp)->type.Numbers[(&name - (termp)->type2.Numbers)]
+ OldNumber(termp, lines) = (short) (*linep);
+ OldNumber(termp, columns) = (short) (*colp);
+#endif
+ } else {
+ _nc_check_screensize(sp, termp, linep, colp);
}
T(("screen size is %dx%d", *linep, *colp));
if (VALID_NUMERIC(init_tabs))
- TABSIZE = (int) init_tabs;
+ my_tabsize = (int) init_tabs;
else
- TABSIZE = 8;
- T(("TABSIZE = %d", TABSIZE));
+ my_tabsize = 8;
+#if USE_REENTRANT
+ if (sp != 0)
+ sp->_TABSIZE = my_tabsize;
+#else
+ TABSIZE = my_tabsize;
+#endif
+ T(("TABSIZE = %d", TABSIZE));
+ returnVoid;
+#endif /* USE_TERM_DRIVER */
}
#if USE_SIZECHANGE
NCURSES_EXPORT(void)
-_nc_update_screensize(void)
+_nc_update_screensize(SCREEN *sp)
{
- int my_lines, my_cols;
+ int new_lines;
+ int new_cols;
- _nc_get_screensize(&my_lines, &my_cols);
- if (SP != 0 && SP->_resize != 0)
- SP->_resize(my_lines, my_cols);
-}
+#ifdef USE_TERM_DRIVER
+ int old_lines;
+ int old_cols;
+
+ assert(sp != 0);
+
+ CallDriver_2(sp, td_getsize, &old_lines, &old_cols);
+
+#else
+ TERMINAL *termp = cur_term;
+ int old_lines = lines;
+ int old_cols = columns;
#endif
+ if (sp != 0) {
+ TINFO_GET_SIZE(sp, sp->_term, &new_lines, &new_cols);
+ /*
+ * See is_term_resized() and resizeterm().
+ * We're doing it this way because those functions belong to the upper
+ * ncurses library, while this resides in the lower terminfo library.
+ */
+ if (sp->_resize != 0) {
+ if ((new_lines != old_lines) || (new_cols != old_cols)) {
+ sp->_resize(NCURSES_SP_ARGx new_lines, new_cols);
+ } else if (sp->_sig_winch && (sp->_ungetch != 0)) {
+ sp->_ungetch(SP_PARM, KEY_RESIZE); /* so application can know this */
+ }
+ sp->_sig_winch = FALSE;
+ }
+ }
+}
+#endif /* USE_SIZECHANGE */
+
/****************************************************************************
*
* Terminal setup
*
****************************************************************************/
-#define ret_error(code, fmt, arg) if (errret) {\
- *errret = code;\
- returnCode(ERR);\
- } else {\
- fprintf(stderr, fmt, arg);\
- exit(EXIT_FAILURE);\
- }
-
-#define ret_error0(code, msg) if (errret) {\
- *errret = code;\
- returnCode(ERR);\
- } else {\
- fprintf(stderr, msg);\
- exit(EXIT_FAILURE);\
- }
-
-#if USE_DATABASE || USE_TERMCAP
-static int
-grab_entry(const char *const tn, TERMTYPE * const tp)
-/* return 1 if entry found, 0 if not found, -1 if database not accessible */
+#if NCURSES_USE_DATABASE || NCURSES_USE_TERMCAP
+/*
+ * Return 1 if entry found, 0 if not found, -1 if database not accessible,
+ * just like tgetent().
+ */
+int
+_nc_setup_tinfo(const char *const tn, TERMTYPE2 *const tp)
{
char filename[PATH_MAX];
- int status;
-
- /*
- * $TERM shouldn't contain pathname delimiters.
- */
- if (strchr(tn, '/'))
- return 0;
-
-#if USE_DATABASE
- if ((status = _nc_read_entry(tn, filename, tp)) != 1) {
-
-#if !PURE_TERMINFO
- /*
- * Try falling back on the termcap file.
- * Note: allowing this call links the entire terminfo/termcap
- * compiler into the startup code. It's preferable to build a
- * real terminfo database and use that.
- */
- status = _nc_read_termcap_entry(tn, tp);
-#endif /* PURE_TERMINFO */
-
- }
-#else
- status = _nc_read_termcap_entry(tn, tp);
-#endif
+ int status = _nc_read_entry2(tn, filename, tp);
/*
* If we have an entry, force all of the cancelled strings to null
* (The terminfo compiler bypasses this logic, since it must know if
* a string is cancelled, for merging entries).
*/
- if (status == 1) {
- int n;
+ if (status == TGETENT_YES) {
+ unsigned n;
+ T(("_nc_setup_tinfo - resetting invalid booleans/strings"));
for_each_boolean(n, tp) {
if (!VALID_BOOLEAN(tp->Booleans[n]))
tp->Booleans[n] = FALSE;
}
#endif
-NCURSES_EXPORT_VAR(char) ttytype[NAMESIZE] = "";
-
/*
- * setupterm(termname, Filedes, errret)
- *
- * Find and read the appropriate object file for the terminal
- * Make cur_term point to the structure.
- *
+ * Take the real command character out of the CC environment variable
+ * and substitute it in for the prototype given in 'command_character'.
*/
-
-NCURSES_EXPORT(int)
-setupterm(NCURSES_CONST char *tname, int Filedes, int *errret)
+void
+_nc_tinfo_cmdch(TERMINAL *termp, int proto)
{
- struct term *term_ptr;
- int status;
+ char *tmp;
- START_TRACE();
- T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, errret));
+ /*
+ * Only use the character if the string is a single character,
+ * since it is fairly common for developers to set the C compiler
+ * name as an environment variable - using the same symbol.
+ */
+ if ((tmp = getenv("CC")) != 0 && strlen(tmp) == 1) {
+ unsigned i;
+ char CC = *tmp;
- if (tname == 0) {
- tname = getenv("TERM");
- if (tname == 0 || *tname == '\0') {
- ret_error0(-1, "TERM environment variable not set.\n");
+ for_each_string(i, &(termp->type)) {
+ tmp = termp->type.Strings[i];
+ if (VALID_STRING(tmp)) {
+ for (; *tmp; ++tmp) {
+ if (UChar(*tmp) == proto)
+ *tmp = CC;
+ }
+ }
}
}
- if (strlen(tname) > MAX_NAME_SIZE) {
- ret_error(-1, "TERM environment must be <= %d characters.\n",
- MAX_NAME_SIZE);
- }
+}
- T(("your terminal name is %s", tname));
+/*
+ * Find the locale which is in effect.
+ */
+NCURSES_EXPORT(char *)
+_nc_get_locale(void)
+{
+ char *env;
+#if HAVE_LOCALE_H
+ /*
+ * This is preferable to using getenv() since it ensures that we are using
+ * the locale which was actually initialized by the application.
+ */
+ env = setlocale(LC_CTYPE, 0);
+#else
+ if (((env = getenv("LANG")) != 0 && *env != '\0')
+ || ((env = getenv("LC_CTYPE")) != 0 && *env != '\0')
+ || ((env = getenv("LC_ALL")) != 0 && *env != '\0')) {
+ ;
+ }
+#endif
+ T(("_nc_get_locale %s", _nc_visbuf(env)));
+ return env;
+}
- term_ptr = typeCalloc(TERMINAL, 1);
+/*
+ * Check if we are running in a UTF-8 locale.
+ */
+NCURSES_EXPORT(int)
+_nc_unicode_locale(void)
+{
+ static bool initialized = FALSE;
+ static int result = 0;
- if (term_ptr == 0) {
- ret_error0(-1, "Not enough memory to create terminal structure.\n");
- }
-#if USE_DATABASE || USE_TERMCAP
- status = grab_entry(tname, &term_ptr->type);
+ if (!initialized) {
+#if defined(_NC_WINDOWS) && USE_WIDEC_SUPPORT
+ result = 1;
+#elif HAVE_LANGINFO_CODESET
+ char *env = nl_langinfo(CODESET);
+ result = !strcmp(env, "UTF-8");
+ T(("_nc_unicode_locale(%s) ->%d", env, result));
#else
- status = 0;
+ char *env = _nc_get_locale();
+ if (env != 0) {
+ if (strstr(env, ".UTF-8") != 0) {
+ result = 1;
+ T(("_nc_unicode_locale(%s) ->%d", env, result));
+ }
+ }
#endif
+ initialized = TRUE;
+ }
+ return result;
+}
- /* try fallback list if entry on disk */
- if (status != 1) {
- const TERMTYPE *fallback = _nc_fallback(tname);
+#define CONTROL_N(s) ((s) != 0 && strstr(s, "\016") != 0)
+#define CONTROL_O(s) ((s) != 0 && strstr(s, "\017") != 0)
- if (fallback) {
- term_ptr->type = *fallback;
- status = 1;
+/*
+ * Check for known broken cases where a UTF-8 locale breaks the alternate
+ * character set.
+ */
+NCURSES_EXPORT(int)
+_nc_locale_breaks_acs(TERMINAL *termp)
+{
+ const char *env_name = "NCURSES_NO_UTF8_ACS";
+ const char *env;
+ int value;
+ int result = 0;
+
+ T((T_CALLED("_nc_locale_breaks_acs:%d"), result));
+ if (getenv(env_name) != 0) {
+ result = _nc_getenv_num(env_name);
+ } else if ((value = tigetnum("U8")) >= 0) {
+ result = value; /* use extension feature */
+ } else if ((env = getenv("TERM")) != 0) {
+ if (strstr(env, "linux")) {
+ result = 1; /* always broken */
+ } else if (strstr(env, "screen") != 0
+ && ((env = getenv("TERMCAP")) != 0
+ && strstr(env, "screen") != 0)
+ && strstr(env, "hhII00") != 0) {
+ if (CONTROL_N(enter_alt_charset_mode) ||
+ CONTROL_O(enter_alt_charset_mode) ||
+ CONTROL_N(set_attributes) ||
+ CONTROL_O(set_attributes)) {
+ result = 1;
+ }
}
}
+ returnCode(result);
+}
- if (status == -1) {
- ret_error0(-1, "terminals database is inaccessible\n");
- } else if (status == 0) {
- ret_error(0, "'%s': unknown terminal type.\n", tname);
- }
+NCURSES_EXPORT(int)
+TINFO_SETUP_TERM(TERMINAL **tp,
+ const char *tname,
+ int Filedes,
+ int *errret,
+ int reuse)
+{
+#ifdef USE_TERM_DRIVER
+ TERMINAL_CONTROL_BLOCK *TCB = 0;
+#endif
+ TERMINAL *termp;
+ SCREEN *sp = 0;
+ char *myname;
+ int code = ERR;
- /*
- * Improve on SVr4 curses. If an application mixes curses and termcap
- * calls, it may call both initscr and tgetent. This is not really a
- * good thing to do, but can happen if someone tries using ncurses with
- * the readline library. The problem we are fixing is that when
- * tgetent calls setupterm, the resulting Ottyb struct in cur_term is
- * zeroed. A subsequent call to endwin uses the zeroed terminal
- * settings rather than the ones saved in initscr. So we check if
- * cur_term appears to contain terminal settings for the same output
- * file as our current call - and copy those terminal settings. (SVr4
- * curses does not do this, however applications that are working
- * around the problem will still work properly with this feature).
- */
- if (cur_term != 0) {
- if (cur_term->Filedes == Filedes)
- term_ptr->Ottyb = cur_term->Ottyb;
- }
+ START_TRACE();
- set_curterm(term_ptr);
+#ifdef USE_TERM_DRIVER
+ T((T_CALLED("_nc_setupterm_ex(%p,%s,%d,%p)"),
+ (void *) tp, _nc_visbuf(tname), Filedes, (void *) errret));
- if (command_character && getenv("CC"))
- do_prototype();
+ if (tp == 0) {
+ ret_error0(TGETENT_ERR,
+ "Invalid parameter, internal error.\n");
+ } else
+ termp = *tp;
+#else
+ termp = cur_term;
+ T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, (void *) errret));
+#endif
- strncpy(ttytype, cur_term->type.term_names, NAMESIZE - 1);
- ttytype[NAMESIZE - 1] = '\0';
+ if (tname == 0) {
+ tname = getenv("TERM");
+#if defined(EXP_WIN32_DRIVER)
+ if (!VALID_TERM_ENV(tname, NO_TERMINAL)) {
+ T(("Failure with TERM=%s", NonNull(tname)));
+ ret_error0(TGETENT_ERR, "TERM environment variable not set.\n");
+ }
+#elif defined(USE_TERM_DRIVER)
+ if (!NonEmpty(tname))
+ tname = "unknown";
+#else
+ if (!NonEmpty(tname)) {
+ T(("Failure with TERM=%s", NonNull(tname)));
+ ret_error0(TGETENT_ERR, "TERM environment variable not set.\n");
+ }
+#endif
+ }
+ myname = strdup(tname);
+ if (myname == NULL || strlen(myname) > MAX_NAME_SIZE) {
+ ret_error(TGETENT_ERR,
+ "TERM environment must be 1..%d characters.\n",
+ MAX_NAME_SIZE,
+ free(myname));
+ }
+
+ T(("your terminal name is %s", myname));
/*
* Allow output redirection. This is what SVr3 does. If stdout is
* directed to a file, screen updates go to standard error.
*/
- if (Filedes == STDOUT_FILENO && !isatty(Filedes))
+ if (Filedes == STDOUT_FILENO && !NC_ISATTY(Filedes))
Filedes = STDERR_FILENO;
- cur_term->Filedes = Filedes;
+#if defined(EXP_WIN32_DRIVER)
+ if (Filedes != STDERR_FILENO && NC_ISATTY(Filedes))
+ _setmode(Filedes, _O_BINARY);
+#endif
/*
- * If an application calls setupterm() rather than initscr() or newterm(),
- * we will not have the def_prog_mode() call in _nc_setupscreen(). Do it
- * now anyway, so we can initialize the baudrate.
+ * Check if we have already initialized to use this terminal. If so, we
+ * do not need to re-read the terminfo entry, or obtain TTY settings.
+ *
+ * This is an improvement on SVr4 curses. If an application mixes curses
+ * and termcap calls, it may call both initscr and tgetent. This is not
+ * really a good thing to do, but can happen if someone tries using ncurses
+ * with the readline library. The problem we are fixing is that when
+ * tgetent calls setupterm, the resulting Ottyb struct in cur_term is
+ * zeroed. A subsequent call to endwin uses the zeroed terminal settings
+ * rather than the ones saved in initscr. So we check if cur_term appears
+ * to contain terminal settings for the same output file as our current
+ * call - and copy those terminal settings. (SVr4 curses does not do this,
+ * however applications that are working around the problem will still work
+ * properly with this feature).
*/
- if (isatty(Filedes)) {
- def_prog_mode();
- baudrate();
+ if (reuse
+ && (termp != 0)
+ && termp->Filedes == Filedes
+ && termp->_termname != 0
+ && !strcmp(termp->_termname, myname)
+ && _nc_name_match(TerminalType(termp).term_names, myname, "|")) {
+ T(("reusing existing terminal information and mode-settings"));
+ code = OK;
+#ifdef USE_TERM_DRIVER
+ TCB = (TERMINAL_CONTROL_BLOCK *) termp;
+#endif
+ } else {
+#ifdef USE_TERM_DRIVER
+ TERMINAL_CONTROL_BLOCK *my_tcb;
+ termp = 0;
+ if ((my_tcb = typeCalloc(TERMINAL_CONTROL_BLOCK, 1)) != 0)
+ termp = &(my_tcb->term);
+#else
+ int status;
+
+ termp = typeCalloc(TERMINAL, 1);
+#endif
+ if (termp == 0) {
+ ret_error1(TGETENT_ERR,
+ "Not enough memory to create terminal structure.\n",
+ myname, free(myname));
+ }
+ ++_nc_globals.terminal_count;
+#if HAVE_SYSCONF
+ {
+ long limit;
+#ifdef LINE_MAX
+ limit = LINE_MAX;
+#else
+ limit = _nc_globals.getstr_limit;
+#endif
+#ifdef _SC_LINE_MAX
+ if (limit < sysconf(_SC_LINE_MAX))
+ limit = sysconf(_SC_LINE_MAX);
+#endif
+ if (_nc_globals.getstr_limit < (int) limit)
+ _nc_globals.getstr_limit = (int) limit;
+ }
+#endif /* HAVE_SYSCONF */
+ T(("using %d for getstr limit", _nc_globals.getstr_limit));
+
+#ifdef USE_TERM_DRIVER
+ INIT_TERM_DRIVER();
+ /*
+ * _nc_get_driver() will call td_CanHandle() for each driver, and win_driver
+ * needs file descriptor to do the test, so set it before calling.
+ */
+ termp->Filedes = (short) Filedes;
+ TCB = (TERMINAL_CONTROL_BLOCK *) termp;
+ code = _nc_globals.term_driver(TCB, myname, errret);
+ if (code == OK) {
+ termp->_termname = strdup(myname);
+ } else {
+ ret_error1(errret ? *errret : TGETENT_ERR,
+ "Could not find any driver to handle terminal.\n",
+ myname, free(myname));
+ }
+#else
+#if NCURSES_USE_DATABASE || NCURSES_USE_TERMCAP
+ status = _nc_setup_tinfo(myname, &TerminalType(termp));
+ T(("_nc_setup_tinfo returns %d", status));
+#else
+ T(("no database available"));
+ status = TGETENT_NO;
+#endif
+
+ /* try fallback list if entry on disk */
+ if (status != TGETENT_YES) {
+ const TERMTYPE2 *fallback = _nc_fallback2(myname);
+
+ if (fallback) {
+ T(("found fallback entry"));
+ _nc_copy_termtype2(&(TerminalType(termp)), fallback);
+ status = TGETENT_YES;
+ }
+ }
+
+ if (status != TGETENT_YES) {
+ del_curterm(termp);
+ if (status == TGETENT_ERR) {
+ free(myname);
+ ret_error0(status, "terminals database is inaccessible\n");
+ } else if (status == TGETENT_NO) {
+ ret_error1(status, "unknown terminal type.\n",
+ myname, free(myname));
+ } else {
+ free(myname);
+ ret_error0(status, "unexpected return-code\n");
+ }
+ }
+#if NCURSES_EXT_NUMBERS
+ _nc_export_termtype2(&termp->type, &TerminalType(termp));
+#endif
+#if !USE_REENTRANT
+ save_ttytype(termp);
+#endif
+
+ termp->Filedes = (short) Filedes;
+ termp->_termname = strdup(myname);
+
+ set_curterm(termp);
+
+ if (VALID_STRING(command_character))
+ _nc_tinfo_cmdch(termp, UChar(*command_character));
+
+ /*
+ * If an application calls setupterm() rather than initscr() or
+ * newterm(), we will not have the def_prog_mode() call in
+ * _nc_setupscreen(). Do it now anyway, so we can initialize the
+ * baudrate. Also get the shell-mode so that erasechar() works.
+ */
+ if (NC_ISATTY(Filedes)) {
+ NCURSES_SP_NAME(def_shell_mode) (NCURSES_SP_ARG);
+ NCURSES_SP_NAME(def_prog_mode) (NCURSES_SP_ARG);
+ NCURSES_SP_NAME(baudrate) (NCURSES_SP_ARG);
+ }
+ code = OK;
+#endif
}
- _nc_get_screensize(&LINES, &COLS);
+#ifdef USE_TERM_DRIVER
+ *tp = termp;
+ NCURSES_SP_NAME(set_curterm) (sp, termp);
+ TCB->drv->td_init(TCB);
+#else
+ sp = SP;
+#endif
- if (errret)
- *errret = 1;
+ /*
+ * We should always check the screensize, just in case.
+ */
+ TINFO_GET_SIZE(sp, termp, ptrLines(sp), ptrCols(sp));
- T((T_CREATE("screen %s %dx%d"), tname, LINES, COLS));
+ if (errret)
+ *errret = TGETENT_YES;
+#ifndef USE_TERM_DRIVER
if (generic_type) {
- ret_error(0, "'%s': I need something more specific.\n", tname);
+ /*
+ * BSD 4.3's termcap contains mis-typed "gn" for wy99. Do a sanity
+ * check before giving up.
+ */
+ if ((VALID_STRING(cursor_address)
+ || (VALID_STRING(cursor_down) && VALID_STRING(cursor_home)))
+ && VALID_STRING(clear_screen)) {
+ ret_error1(TGETENT_YES, "terminal is not really generic.\n",
+ myname, free(myname));
+ } else {
+ del_curterm(termp);
+ ret_error1(TGETENT_NO, "I need something more specific.\n",
+ myname, free(myname));
+ }
+ } else if (hard_copy) {
+ ret_error1(TGETENT_YES, "I can't handle hardcopy terminals.\n",
+ myname, free(myname));
}
- if (hard_copy) {
- ret_error(1, "'%s': I can't handle hardcopy terminals.\n", tname);
+#endif
+ free(myname);
+ returnCode(code);
+}
+
+#ifdef USE_PTHREADS
+/*
+ * Returns a non-null pointer unless a new screen should be allocated because
+ * no match was found in the pre-screen cache.
+ */
+NCURSES_EXPORT(SCREEN *)
+_nc_find_prescr(void)
+{
+ SCREEN *result = 0;
+ PRESCREEN_LIST *p;
+ pthread_t id = GetThreadID();
+ for (p = _nc_prescreen.allocated; p != 0; p = p->next) {
+ if (p->id == id) {
+ result = p->sp;
+ break;
+ }
}
- returnCode(OK);
+ return result;
}
/*
-** do_prototype()
-**
-** Take the real command character out of the CC environment variable
-** and substitute it in for the prototype given in 'command_character'.
-**
-*/
+ * Tells ncurses to forget that this thread was associated with the pre-screen
+ * cache. It does not modify the pre-screen cache itself, since that is used
+ * for creating new screens.
+ */
+NCURSES_EXPORT(void)
+_nc_forget_prescr(void)
+{
+ PRESCREEN_LIST *p, *q;
+ pthread_t id = GetThreadID();
+ _nc_lock_global(screen);
+ for (p = _nc_prescreen.allocated, q = 0; p != 0; q = p, p = p->next) {
+ if (p->id == id) {
+ if (q) {
+ q->next = p->next;
+ } else {
+ _nc_prescreen.allocated = p->next;
+ }
+ free(p);
+ break;
+ }
+ }
+ _nc_unlock_global(screen);
+}
+#endif /* USE_PTHREADS */
-static void
-do_prototype(void)
+#if NCURSES_SP_FUNCS
+/*
+ * In case of handling multiple screens, we need to have a screen before
+ * initialization in _nc_setupscreen takes place. This is to extend the
+ * substitute for some of the stuff in _nc_prescreen, especially for slk and
+ * ripoff handling which should be done per screen.
+ */
+NCURSES_EXPORT(SCREEN *)
+new_prescr(void)
{
- int i;
- char CC;
- char proto;
- char *tmp;
+ SCREEN *sp;
- tmp = getenv("CC");
- CC = *tmp;
- proto = *command_character;
+ START_TRACE();
+ T((T_CALLED("new_prescr()")));
- for_each_string(i, &(cur_term->type)) {
- for (tmp = cur_term->type.Strings[i]; *tmp; tmp++) {
- if (*tmp == proto)
- *tmp = CC;
+ _nc_lock_global(screen);
+ if ((sp = _nc_find_prescr()) == 0) {
+ sp = _nc_alloc_screen_sp();
+ T(("_nc_alloc_screen_sp %p", (void *) sp));
+ if (sp != 0) {
+#ifdef USE_PTHREADS
+ PRESCREEN_LIST *p = typeCalloc(PRESCREEN_LIST, 1);
+ if (p != 0) {
+ p->id = GetThreadID();
+ p->sp = sp;
+ p->next = _nc_prescreen.allocated;
+ _nc_prescreen.allocated = p;
+ }
+#else
+ _nc_prescreen.allocated = sp;
+#endif
+ sp->rsp = sp->rippedoff;
+ sp->_filtered = _nc_prescreen.filter_mode;
+ sp->_use_env = _nc_prescreen.use_env;
+#if NCURSES_NO_PADDING
+ sp->_no_padding = _nc_prescreen._no_padding;
+#endif
+ sp->slk_format = 0;
+ sp->_slk = 0;
+ sp->_prescreen = TRUE;
+ SP_PRE_INIT(sp);
+#if USE_REENTRANT
+ sp->_TABSIZE = _nc_prescreen._TABSIZE;
+ sp->_ESCDELAY = _nc_prescreen._ESCDELAY;
+#endif
}
+ } else {
+ T(("_nc_alloc_screen_sp %p (reuse)", (void *) sp));
}
+ _nc_unlock_global(screen);
+ returnSP(sp);
+}
+#endif
+
+#ifdef USE_TERM_DRIVER
+/*
+ * This entrypoint is called from tgetent() to allow a special case of reusing
+ * the same TERMINAL data (see comment).
+ */
+NCURSES_EXPORT(int)
+_nc_setupterm(const char *tname,
+ int Filedes,
+ int *errret,
+ int reuse)
+{
+ int rc = ERR;
+ TERMINAL *termp = 0;
+
+ _nc_init_pthreads();
+ _nc_lock_global(prescreen);
+ START_TRACE();
+ if (TINFO_SETUP_TERM(&termp, tname, Filedes, errret, reuse) == OK) {
+ _nc_forget_prescr();
+ if (NCURSES_SP_NAME(set_curterm) (CURRENT_SCREEN_PRE, termp) != 0) {
+ rc = OK;
+ }
+ }
+ _nc_unlock_global(prescreen);
+
+ return rc;
+}
+#endif
+
+/*
+ * setupterm(termname, Filedes, errret)
+ *
+ * Find and read the appropriate object file for the terminal
+ * Make cur_term point to the structure.
+ */
+NCURSES_EXPORT(int)
+setupterm(const char *tname, int Filedes, int *errret)
+{
+ START_TRACE();
+ return _nc_setupterm(tname, Filedes, errret, FALSE);
}
projects / ncurses.git / blobdiff