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Diffstat (limited to 'contrib/ncurses/ncurses/tinfo/lib_setup.c')
-rw-r--r--contrib/ncurses/ncurses/tinfo/lib_setup.c411
1 files changed, 285 insertions, 126 deletions
diff --git a/contrib/ncurses/ncurses/tinfo/lib_setup.c b/contrib/ncurses/ncurses/tinfo/lib_setup.c
index 1e49b2b6ce07..350824208830 100644
--- a/contrib/ncurses/ncurses/tinfo/lib_setup.c
+++ b/contrib/ncurses/ncurses/tinfo/lib_setup.c
@@ -1,5 +1,5 @@
/****************************************************************************
- * Copyright (c) 1998,1999,2000,2001 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2005,2006 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 *
@@ -29,6 +29,7 @@
/****************************************************************************
* Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 *
* and: Eric S. Raymond <esr@snark.thyrsus.com> *
+ * and: Thomas E. Dickey 1996-2003 *
****************************************************************************/
/*
@@ -46,9 +47,13 @@
#define _POSIX_SOURCE
#endif
+#if HAVE_LOCALE_H
+#include <locale.h>
+#endif
+
#include <term.h> /* lines, columns, cur_term */
-MODULE_ID("$Id: lib_setup.c,v 1.68 2001/12/08 22:14:18 tom Exp $")
+MODULE_ID("$Id: lib_setup.c,v 1.95 2006/07/28 22:58:13 tom Exp $")
/****************************************************************************
*
@@ -72,6 +77,10 @@ MODULE_ID("$Id: lib_setup.c,v 1.68 2001/12/08 22:14:18 tom Exp $")
# include <sys/ptem.h>
#endif
+#if HAVE_LANGINFO_CODESET
+#include <langinfo.h>
+#endif
+
/*
* SCO defines TIOCGSIZE and the corresponding struct. Other systems (SunOS,
* Solaris, IRIX) define TIOCGWINSZ and struct winsize.
@@ -90,9 +99,58 @@ MODULE_ID("$Id: lib_setup.c,v 1.68 2001/12/08 22:14:18 tom Exp $")
# endif
#endif
+NCURSES_EXPORT_VAR(char) ttytype[NAMESIZE] = "";
+NCURSES_EXPORT_VAR(int) LINES = 0;
+NCURSES_EXPORT_VAR(int) COLS = 0;
+NCURSES_EXPORT_VAR(int) TABSIZE = 0;
+
static int _use_env = TRUE;
-static void do_prototype(void);
+#if USE_SIGWINCH
+int
+_nc_handle_sigwinch(int enable)
+{
+ static int have_sigwinch = 0; /* initially no SIGWINCH's */
+ static int can_resizeall = 1; /* initially enabled */
+ SCREEN *scan;
+ int result;
+
+ switch (enable) {
+ default:
+ /* record a SIGWINCH */
+ have_sigwinch = 1;
+ break;
+ case 0:
+ /* temporarily disable the next block */
+ --can_resizeall;
+ break;
+ case 1:
+ /* temporarily enable the next block */
+ ++can_resizeall;
+ break;
+ }
+
+ /*
+ * If we have a pending SIGWINCH, set the flag in each screen.
+ * But do this only if the block is enabled.
+ */
+ if (can_resizeall-- >= 0) { /* test and disable */
+ if (have_sigwinch) {
+ scan = _nc_screen_chain;
+ while (scan) {
+ scan->_sig_winch = TRUE;
+ scan = scan->_next_screen;
+ }
+ have_sigwinch = 0;
+ }
+ }
+ result = can_resizeall + 1; /* reenable (unless disables are nested) */
+ can_resizeall = result;
+
+ return result;
+}
+
+#endif
NCURSES_EXPORT(void)
use_env(bool f)
@@ -102,10 +160,6 @@ use_env(bool f)
returnVoid;
}
-NCURSES_EXPORT_VAR(int) LINES = 0;
-NCURSES_EXPORT_VAR(int) COLS = 0;
-NCURSES_EXPORT_VAR(int) TABSIZE = 0;
-
static void
_nc_get_screensize(int *linep, int *colp)
/* Obtain lines/columns values from the environment and/or terminfo entry */
@@ -113,6 +167,7 @@ _nc_get_screensize(int *linep, int *colp)
/* figure out the size of the screen */
T(("screen size: terminfo lines = %d columns = %d", lines, columns));
+ _nc_handle_sigwinch(0);
if (!_use_env) {
*linep = (int) lines;
*colp = (int) columns;
@@ -159,7 +214,7 @@ _nc_get_screensize(int *linep, int *colp)
* environment variable.
*/
if (*linep <= 0)
- *linep = WINSIZE_ROWS(size);
+ *linep = (SP != 0 && SP->_filtered) ? 1 : WINSIZE_ROWS(size);
if (*colp <= 0)
*colp = WINSIZE_COLS(size);
}
@@ -191,6 +246,7 @@ _nc_get_screensize(int *linep, int *colp)
lines = (short) (*linep);
columns = (short) (*colp);
}
+ _nc_handle_sigwinch(1);
T(("screen size is %dx%d", *linep, *colp));
@@ -199,18 +255,30 @@ _nc_get_screensize(int *linep, int *colp)
else
TABSIZE = 8;
T(("TABSIZE = %d", TABSIZE));
-
}
#if USE_SIZECHANGE
NCURSES_EXPORT(void)
_nc_update_screensize(void)
{
- int my_lines, my_cols;
+ int old_lines = lines;
+ int new_lines;
+ int old_cols = columns;
+ int new_cols;
- _nc_get_screensize(&my_lines, &my_cols);
- if (SP != 0 && SP->_resize != 0)
- SP->_resize(my_lines, my_cols);
+ _nc_get_screensize(&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
@@ -237,36 +305,15 @@ _nc_update_screensize(void)
}
#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)
-/* return 1 if entry found, 0 if not found, -1 if database not accessible */
+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 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_entry(tn, filename, tp);
/*
* If we have an entry, force all of the cancelled strings to null
@@ -274,8 +321,8 @@ grab_entry(const char *const tn, TERMTYPE * const tp)
* (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;
for_each_boolean(n, tp) {
if (!VALID_BOOLEAN(tp->Booleans[n]))
tp->Booleans[n] = FALSE;
@@ -289,139 +336,251 @@ grab_entry(const char *const tn, TERMTYPE * const tp)
}
#endif
-NCURSES_EXPORT_VAR(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;
+}
+
+/*
+ * Check if we are running in a UTF-8 locale.
*/
+NCURSES_EXPORT(int)
+_nc_unicode_locale(void)
+{
+ 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;
+}
+#define CONTROL_N(s) ((s) != 0 && strstr(s, "\016") != 0)
+#define CONTROL_O(s) ((s) != 0 && strstr(s, "\017") != 0)
+
+/*
+ * Check for known broken cases where a UTF-8 locale breaks the alternate
+ * character set.
+ */
NCURSES_EXPORT(int)
-setupterm(NCURSES_CONST char *tname, int Filedes, int *errret)
+_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;
+}
+
+/*
+ * 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)
{
- struct term *term_ptr;
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(-1, "TERM environment variable not set.\n");
+ ret_error0(TGETENT_ERR, "TERM environment variable not set.\n");
}
}
+
if (strlen(tname) > MAX_NAME_SIZE) {
- ret_error(-1, "TERM environment must be <= %d characters.\n",
+ ret_error(TGETENT_ERR,
+ "TERM environment must be <= %d characters.\n",
MAX_NAME_SIZE);
}
T(("your terminal name is %s", tname));
- term_ptr = typeCalloc(TERMINAL, 1);
+ /*
+ * 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;
- if (term_ptr == 0) {
- ret_error0(-1, "Not enough memory to create terminal structure.\n");
- }
+ /*
+ * 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(TGETENT_ERR,
+ "Not enough memory to create terminal structure.\n");
+ }
#if USE_DATABASE || USE_TERMCAP
- status = grab_entry(tname, &term_ptr->type);
+ 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);
+ /* try fallback list if entry on disk */
+ if (status != TGETENT_YES) {
+ const TERMTYPE *fallback = _nc_fallback(tname);
- if (fallback) {
- term_ptr->type = *fallback;
- status = 1;
+ if (fallback) {
+ term_ptr->type = *fallback;
+ 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);
+ }
+ }
- /*
- * 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;
- }
+ set_curterm(term_ptr);
+
+ if (command_character && getenv("CC"))
+ do_prototype();
- set_curterm(term_ptr);
+ strncpy(ttytype, cur_term->type.term_names, NAMESIZE - 1);
+ ttytype[NAMESIZE - 1] = '\0';
- if (command_character && getenv("CC"))
- do_prototype();
+ cur_term->Filedes = Filedes;
+ cur_term->_termname = strdup(tname);
- strncpy(ttytype, cur_term->type.term_names, NAMESIZE - 1);
- ttytype[NAMESIZE - 1] = '\0';
+ /*
+ * 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 (isatty(Filedes)) {
+ def_prog_mode();
+ baudrate();
+ }
+ }
/*
- * Allow output redirection. This is what SVr3 does.
- * If stdout is directed to a file, screen updates go
- * to standard error.
+ * We should always check the screensize, just in case.
*/
- if (Filedes == STDOUT_FILENO && !isatty(Filedes))
- Filedes = STDERR_FILENO;
- cur_term->Filedes = Filedes;
-
_nc_get_screensize(&LINES, &COLS);
if (errret)
- *errret = 1;
+ *errret = TGETENT_YES;
T((T_CREATE("screen %s %dx%d"), tname, LINES, COLS));
if (generic_type) {
- ret_error(0, "'%s': I need something more specific.\n", tname);
+ ret_error(TGETENT_NO, "'%s': I need something more specific.\n", tname);
}
if (hard_copy) {
- ret_error(1, "'%s': I can't handle hardcopy terminals.\n", tname);
+ 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);
}