/****************************************************************************
- * Copyright (c) 1998 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2007,2008 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 *
****************************************************************************/
-
/*
* Terminal setup routines common to termcap and terminfo:
*
*/
#include <curses.priv.h>
-#include <tic.h> /* for MAX_NAME_SIZE */
+#include <tic.h> /* for MAX_NAME_SIZE */
#include <term_entry.h>
-#if defined(SVR4_TERMIO) && !defined(_POSIX_SOURCE)
+#if SVR4_TERMIO && !defined(_POSIX_SOURCE)
#define _POSIX_SOURCE
#endif
-#include <term.h> /* lines, columns, cur_term */
+#if HAVE_LOCALE_H
+#include <locale.h>
+#endif
+
+#include <term.h> /* lines, columns, cur_term */
-MODULE_ID("$Id: lib_setup.c,v 1.55 1999/08/21 23:06:08 tom Exp $")
+MODULE_ID("$Id: lib_setup.c,v 1.107 2008/06/07 22:22:58 tom Exp $")
/****************************************************************************
*
# 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;
+/*
+ * Wrap global variables in this module.
+ */
+#if USE_REENTRANT
+NCURSES_EXPORT(char *)
+NCURSES_PUBLIC_VAR(ttytype) (void)
+{
+ static char empty[] = "";
+ return cur_term ? cur_term->type.term_names : empty;
+}
+NCURSES_EXPORT(int *)
+_nc_ptr_Lines(void)
+{
+ return ptrLines();
+}
+NCURSES_EXPORT(int)
+NCURSES_PUBLIC_VAR(LINES) (void)
+{
+ return *_nc_ptr_Lines();
+}
+NCURSES_EXPORT(int *)
+_nc_ptr_Cols(void)
+{
+ return ptrCols();
+}
+NCURSES_EXPORT(int)
+NCURSES_PUBLIC_VAR(COLS) (void)
+{
+ return *_nc_ptr_Cols();
+}
+NCURSES_EXPORT(int)
+NCURSES_PUBLIC_VAR(TABSIZE) (void)
+{
+ return SP ? SP->_TABSIZE : 8;
+}
+#else
+NCURSES_EXPORT_VAR(char) ttytype[NAMESIZE] = "";
+NCURSES_EXPORT_VAR(int) LINES = 0;
+NCURSES_EXPORT_VAR(int) COLS = 0;
+NCURSES_EXPORT_VAR(int) TABSIZE = 0;
+#endif
-static void do_prototype(void);
+#if NCURSES_EXT_FUNCS
+NCURSES_EXPORT(int)
+set_tabsize(int value)
+{
+ int code = OK;
+#if USE_REENTRANT
+ if (SP) {
+ SP->_TABSIZE = value;
+ } else {
+ code = ERR;
+ }
+#else
+ TABSIZE = value;
+#endif
+ return code;
+}
+#endif
-void use_env(bool f)
+#if USE_SIGWINCH
+/*
+ * If we have a pending SIGWINCH, set the flag in each screen.
+ */
+NCURSES_EXPORT(int)
+_nc_handle_sigwinch(SCREEN *sp)
{
- _use_env = f;
+ 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);
}
-int LINES, COLS, TABSIZE;
+#endif
+
+NCURSES_EXPORT(void)
+use_env(bool f)
+{
+ T((T_CALLED("use_env()")));
+ _nc_prescreen.use_env = f;
+ returnVoid;
+}
-static void _nc_get_screensize(int *linep, int *colp)
+NCURSES_EXPORT(void)
+_nc_get_screensize(SCREEN *sp, int *linep, int *colp)
/* Obtain lines/columns values from the environment and/or terminfo entry */
{
- /* figure out the size of the screen */
- T(("screen size: terminfo lines = %d columns = %d", lines, columns));
+ int my_tabsize;
- if (!_use_env)
- {
- *linep = (int)lines;
- *colp = (int)columns;
- }
- else /* usually want to query LINES and COLUMNS from environment */
- {
- int value;
+ /* figure out the size of the screen */
+ T(("screen size: terminfo lines = %d columns = %d", lines, columns));
- *linep = *colp = 0;
+ if (!_nc_prescreen.use_env) {
+ *linep = (int) lines;
+ *colp = (int) columns;
+ } else { /* usually want to query LINES and COLUMNS from environment */
+ int value;
- /* first, look for environment variables */
- if ((value = _nc_getenv_num("LINES")) > 0) {
- *linep = value;
- }
- if ((value = _nc_getenv_num("COLUMNS")) > 0) {
- *colp = value;
- }
- T(("screen size: environment LINES = %d COLUMNS = %d",*linep,*colp));
+ *linep = *colp = 0;
+
+ /* first, look for environment variables */
+ if ((value = _nc_getenv_num("LINES")) > 0) {
+ *linep = value;
+ }
+ if ((value = _nc_getenv_num("COLUMNS")) > 0) {
+ *colp = value;
+ }
+ T(("screen size: environment LINES = %d COLUMNS = %d", *linep, *colp));
#ifdef __EMX__
- if (*linep <= 0 || *colp <= 0)
- {
- int screendata[2];
- _scrsize(screendata);
- *colp = screendata[0];
- *linep = screendata[1];
- T(("EMX screen size: environment LINES = %d COLUMNS = %d",*linep,*colp));
- }
+ if (*linep <= 0 || *colp <= 0) {
+ int screendata[2];
+ _scrsize(screendata);
+ *colp = screendata[0];
+ *linep = 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);
-
- /*
- * Solaris lets users override either dimension with an
- * environment variable.
- */
- if (*linep <= 0)
- *linep = WINSIZE_ROWS(size);
- if (*colp <= 0)
- *colp = WINSIZE_COLS(size);
- }
- /* FALLTHRU */
- failure:;
+ /* 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);
+
+ /*
+ * Solaris lets users override either dimension with an
+ * environment variable.
+ */
+ if (*linep <= 0)
+ *linep = (sp != 0 && sp->_filtered) ? 1 : WINSIZE_ROWS(size);
+ if (*colp <= 0)
+ *colp = WINSIZE_COLS(size);
}
+ /* FALLTHRU */
+ failure:;
+ }
#endif /* HAVE_SIZECHANGE */
- /* if we can't get dynamic info about the size, use static */
- if (*linep <= 0 || *colp <= 0)
- if (lines > 0 && columns > 0)
- {
- *linep = (int)lines;
- *colp = (int)columns;
- }
-
- /* the ultimate fallback, assume fixed 24x80 size */
- if (*linep <= 0 || *colp <= 0)
- {
- *linep = 24;
- *colp = 80;
- }
+ /* if we can't get dynamic info about the size, use static */
+ if (*linep <= 0) {
+ *linep = (int) lines;
+ }
+ if (*colp <= 0) {
+ *colp = (int) columns;
+ }
- /*
- * 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);
+ /* the ultimate fallback, assume fixed 24x80 size */
+ if (*linep <= 0) {
+ *linep = 24;
+ }
+ if (*colp <= 0) {
+ *colp = 80;
}
- T(("screen size is %dx%d", *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);
+ }
+
+ T(("screen size is %dx%d", *linep, *colp));
- if (init_tabs != -1)
- TABSIZE = (int)init_tabs;
- else
- TABSIZE = 8;
- T(("TABSIZE = %d", TABSIZE));
+ if (VALID_NUMERIC(init_tabs))
+ my_tabsize = (int) init_tabs;
+ else
+ my_tabsize = 8;
+#if USE_REENTRANT
+ if (sp != 0)
+ sp->_TABSIZE = my_tabsize;
+#else
+ TABSIZE = my_tabsize;
+#endif
+ T(("TABSIZE = %d", TABSIZE));
}
#if USE_SIZECHANGE
-void _nc_update_screensize(void)
+NCURSES_EXPORT(void)
+_nc_update_screensize(SCREEN *sp)
{
- int my_lines, my_cols;
-
- _nc_get_screensize(&my_lines, &my_cols);
- if (SP != 0 && SP->_resize != 0)
- SP->_resize(my_lines, my_cols);
+ int old_lines = lines;
+ int new_lines;
+ int old_cols = columns;
+ int new_cols;
+
+ _nc_get_screensize(sp, &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 != 0
+ && sp->_resize != 0) {
+ if ((new_lines != old_lines) || (new_cols != old_cols))
+ sp->_resize(new_lines, new_cols);
+ sp->_sig_winch = FALSE;
+ }
}
#endif
exit(EXIT_FAILURE);\
}
-#if USE_DATABASE
-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 USE_DATABASE || USE_TERMCAP
+/*
+ * Return 1 if entry found, 0 if not found, -1 if database not accessible,
+ * just like tgetent().
+ */
+static int
+grab_entry(const char *const tn, TERMTYPE *const tp)
{
- char filename[PATH_MAX];
- int status;
-
- /*
- * $TERM shouldn't contain pathname delimiters.
- */
- if (strchr(tn, '/'))
- return 0;
-
- if ((status = _nc_read_entry(tn, filename, tp)) != 1) {
-
-#ifndef 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 */
-
+ char filename[PATH_MAX];
+ int status = _nc_read_entry(tn, filename, tp);
+
+ /*
+ * If we have an entry, force all of the cancelled strings to null
+ * pointers so we don't have to test them in the rest of the library.
+ * (The terminfo compiler bypasses this logic, since it must know if
+ * a string is cancelled, for merging entries).
+ */
+ if (status == TGETENT_YES) {
+ unsigned n;
+ for_each_boolean(n, tp) {
+ if (!VALID_BOOLEAN(tp->Booleans[n]))
+ tp->Booleans[n] = FALSE;
}
-
- /*
- * If we have an entry, force all of the cancelled strings to null
- * pointers so we don't have to test them in the rest of the library.
- * (The terminfo compiler bypasses this logic, since it must know if
- * a string is cancelled, for merging entries).
- */
- if (status == 1) {
- int n;
- for_each_boolean(n,tp)
- if (!VALID_BOOLEAN(tp->Booleans[n]))
- tp->Booleans[n] = FALSE;
- for_each_string(n,tp)
- if (tp->Strings[n] == CANCELLED_STRING)
- tp->Strings[n] = ABSENT_STRING;
+ for_each_string(n, tp) {
+ if (tp->Strings[n] == CANCELLED_STRING)
+ tp->Strings[n] = ABSENT_STRING;
}
- return(status);
+ }
+ return (status);
}
#endif
-char ttytype[NAMESIZE];
+/*
+** do_prototype()
+**
+** Take the real command character out of the CC environment variable
+** and substitute it in for the prototype given in 'command_character'.
+*/
+static void
+do_prototype(void)
+{
+ int i;
+ char CC;
+ char proto;
+ char *tmp;
+
+ tmp = getenv("CC");
+ CC = *tmp;
+ proto = *command_character;
+
+ for_each_string(i, &(cur_term->type)) {
+ for (tmp = cur_term->type.Strings[i]; *tmp; tmp++) {
+ if (*tmp == proto)
+ *tmp = CC;
+ }
+ }
+}
/*
- * setupterm(termname, Filedes, errret)
- *
- * Find and read the appropriate object file for the terminal
- * Make cur_term point to the structure.
- *
+ * 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("LC_ALL")) != 0 && *env != '\0')
+ || ((env = getenv("LC_CTYPE")) != 0 && *env != '\0')
+ || ((env = getenv("LANG")) != 0 && *env != '\0')) {
+ ;
+ }
+#endif
+ T(("_nc_get_locale %s", _nc_visbuf(env)));
+ return env;
+}
-int setupterm(NCURSES_CONST char *tname, int Filedes, int *errret)
+/*
+ * Check if we are running in a UTF-8 locale.
+ */
+NCURSES_EXPORT(int)
+_nc_unicode_locale(void)
{
-struct term *term_ptr;
-int status;
+ int result = 0;
+#if HAVE_LANGINFO_CODESET
+ char *env = nl_langinfo(CODESET);
+ result = !strcmp(env, "UTF-8");
+ T(("_nc_unicode_locale(%s) ->%d", env, result));
+#else
+ 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
+ return result;
+}
- T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, errret));
+#define CONTROL_N(s) ((s) != 0 && strstr(s, "\016") != 0)
+#define CONTROL_O(s) ((s) != 0 && strstr(s, "\017") != 0)
- if (tname == 0) {
- tname = getenv("TERM");
- if (tname == 0 || *tname == '\0') {
- ret_error0(-1, "TERM environment variable not set.\n");
- }
- }
- if (strlen(tname) > MAX_NAME_SIZE) {
- ret_error(-1, "TERM environment must be <= %d characters.\n",
- MAX_NAME_SIZE);
+/*
+ * Check for known broken cases where a UTF-8 locale breaks the alternate
+ * character set.
+ */
+NCURSES_EXPORT(int)
+_nc_locale_breaks_acs(void)
+{
+ char *env;
+
+ if ((env = getenv("NCURSES_NO_UTF8_ACS")) != 0) {
+ return atoi(env);
+ } else if ((env = getenv("TERM")) != 0) {
+ if (strstr(env, "linux"))
+ return 1; /* always broken */
+ 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))
+ return 1;
}
+ }
+ return 0;
+}
- T(("your terminal name is %s", tname));
+/*
+ * This entrypoint is called from tgetent() to allow a special case of reusing
+ * the same TERMINAL data (see comment).
+ */
+NCURSES_EXPORT(int)
+_nc_setupterm(NCURSES_CONST char *tname, int Filedes, int *errret, bool reuse)
+{
+ int status;
+
+ START_TRACE();
+ T((T_CALLED("setupterm(%s,%d,%p)"), _nc_visbuf(tname), Filedes, errret));
+
+ if (tname == 0) {
+ tname = getenv("TERM");
+ if (tname == 0 || *tname == '\0') {
+ ret_error0(TGETENT_ERR, "TERM environment variable not set.\n");
+ }
+ }
+
+ if (strlen(tname) > MAX_NAME_SIZE) {
+ ret_error(TGETENT_ERR,
+ "TERM environment must be <= %d characters.\n",
+ MAX_NAME_SIZE);
+ }
+
+ T(("your terminal name is %s", tname));
+
+ /*
+ * 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))
+ Filedes = STDERR_FILENO;
+
+ /*
+ * 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 (reuse
+ && cur_term != 0
+ && cur_term->Filedes == Filedes
+ && cur_term->_termname != 0
+ && !strcmp(cur_term->_termname, tname)
+ && _nc_name_match(cur_term->type.term_names, tname, "|")) {
+ T(("reusing existing terminal information and mode-settings"));
+ } else {
+ TERMINAL *term_ptr;
term_ptr = typeCalloc(TERMINAL, 1);
if (term_ptr == 0) {
- ret_error0(-1, "Not enough memory to create terminal structure.\n") ;
- }
-#if USE_DATABASE
+ ret_error0(TGETENT_ERR,
+ "Not enough memory to create terminal structure.\n");
+ }
+#if USE_DATABASE || USE_TERMCAP
status = grab_entry(tname, &term_ptr->type);
#else
- status = 0;
+ status = TGETENT_NO;
#endif
/* try fallback list if entry on disk */
- if (status != 1)
- {
- const TERMTYPE *fallback = _nc_fallback(tname);
+ if (status != TGETENT_YES) {
+ const TERMTYPE *fallback = _nc_fallback(tname);
- if (fallback)
- {
+ if (fallback) {
term_ptr->type = *fallback;
- status = 1;
+ status = TGETENT_YES;
}
}
- if (status == -1)
- {
- ret_error0(-1, "terminals database is inaccessible\n");
- }
- else if (status == 0)
- {
- ret_error(0, "'%s': unknown terminal type.\n", tname);
+ if (status != TGETENT_YES) {
+ del_curterm(term_ptr);
+ if (status == TGETENT_ERR) {
+ ret_error0(status, "terminals database is inaccessible\n");
+ } else if (status == TGETENT_NO) {
+ ret_error(status, "'%s': unknown terminal type.\n", tname);
+ }
}
+#if !USE_REENTRANT
+ strncpy(ttytype, term_ptr->type.term_names, NAMESIZE - 1);
+ ttytype[NAMESIZE - 1] = '\0';
+#endif
- /*
- * 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;
- }
+ term_ptr->Filedes = Filedes;
+ term_ptr->_termname = strdup(tname);
set_curterm(term_ptr);
- if (command_character && getenv("CC"))
- do_prototype();
-
- strncpy(ttytype, cur_term->type.term_names, NAMESIZE - 1);
- ttytype[NAMESIZE - 1] = '\0';
+ if (command_character && getenv("CC"))
+ do_prototype();
/*
- * Allow output redirection. This is what SVr3 does.
- * If stdout is directed to a file, screen updates go
- * to standard error.
+ * 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.
*/
- if (Filedes == STDOUT_FILENO && !isatty(Filedes))
- Filedes = STDERR_FILENO;
- cur_term->Filedes = Filedes;
-
- _nc_get_screensize(&LINES, &COLS);
-
- if (errret)
- *errret = 1;
-
- T((T_CREATE("screen %s %dx%d"), tname, LINES, COLS));
-
- if (generic_type) {
- ret_error(0, "'%s': I need something more specific.\n", tname);
+ if (isatty(Filedes)) {
+ def_prog_mode();
+ baudrate();
}
- if (hard_copy) {
- ret_error(1, "'%s': I can't handle hardcopy terminals.\n", tname);
- }
- returnCode(OK);
+ }
+
+ /*
+ * We should always check the screensize, just in case.
+ */
+ _nc_get_screensize(SP, ptrLines(), ptrCols());
+
+ if (errret)
+ *errret = TGETENT_YES;
+
+ if (generic_type) {
+ ret_error(TGETENT_NO, "'%s': I need something more specific.\n", tname);
+ }
+ if (hard_copy) {
+ ret_error(TGETENT_YES, "'%s': I can't handle hardcopy terminals.\n", tname);
+ }
+ returnCode(OK);
}
/*
-** do_prototype()
-**
-** Take the real command character out of the CC environment variable
-** and substitute it in for the prototype given in 'command_character'.
-**
-*/
-
-static void
-do_prototype(void)
+ * 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(NCURSES_CONST char *tname, int Filedes, int *errret)
{
-int i;
-char CC;
-char proto;
-char *tmp;
-
- tmp = getenv("CC");
- CC = *tmp;
- proto = *command_character;
-
- for_each_string(i, &(cur_term->type)) {
- for (tmp = cur_term->type.Strings[i]; *tmp; tmp++) {
- if (*tmp == proto)
- *tmp = CC;
- }
- }
+ return _nc_setupterm(tname, Filedes, errret, FALSE);
}
projects / ncurses.git / blobdiff