/****************************************************************************
- * Copyright (c) 1998-2001,2002 Free Software Foundation, Inc. *
+ * Copyright (c) 1998-2002,2003 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 1996-2003 *
****************************************************************************/
/*
#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 1.79 2003/12/27 18:24:26 tom Exp $")
/****************************************************************************
*
# endif
#endif
-static int _use_env = TRUE;
+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 void do_prototype(void);
+static int _use_env = TRUE;
NCURSES_EXPORT(void)
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 */
else
TABSIZE = 8;
T(("TABSIZE = %d", TABSIZE));
-
}
#if USE_SIZECHANGE
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
char filename[PATH_MAX];
+#endif
int status;
/*
* a string is cancelled, for merging entries).
*/
if (status == 1) {
- int n;
+ unsigned n;
for_each_boolean(n, tp) {
if (!VALID_BOOLEAN(tp->Booleans[n]))
tp->Booleans[n] = FALSE;
}
#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;
+ }
+ }
+}
+
+/*
+ * Check if we are running in a UTF-8 locale.
+ */
+NCURSES_EXPORT(char *)
+_nc_get_locale(void)
+{
+ char *env;
+ if (((env = getenv("LC_ALL")) != 0 && *env != '\0')
+ || ((env = getenv("LC_CTYPE")) != 0 && *env != '\0')
+ || ((env = getenv("LANG")) != 0 && *env != '\0')) {
+ return env;
+ }
+ return 0;
+}
+
+/*
+ * Check if we are running in a UTF-8 locale.
+ */
+NCURSES_EXPORT(int)
+_nc_unicode_locale(void)
+{
+ char *env = _nc_get_locale();
+ if (env != 0) {
+ if (strstr(env, ".UTF-8") != 0)
+ return 1;
+ }
+ return 0;
+}
+
+/*
+ * 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 = getenv("TERM");
+ if (env != 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) {
+ return 1;
+ }
+ }
+ return 0;
+}
/*
* setupterm(termname, Filedes, errret)
NCURSES_EXPORT(int)
setupterm(NCURSES_CONST char *tname, int Filedes, int *errret)
{
- struct term *term_ptr;
int status;
START_TRACE();
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 (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 || USE_TERMCAP
- status = grab_entry(tname, &term_ptr->type);
+ status = grab_entry(tname, &term_ptr->type);
#else
- status = 0;
+ status = 0;
#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 != 1) {
+ const TERMTYPE *fallback = _nc_fallback(tname);
- if (fallback) {
- term_ptr->type = *fallback;
- status = 1;
+ if (fallback) {
+ term_ptr->type = *fallback;
+ status = 1;
+ }
}
- }
- 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 <= 0) {
+ del_curterm(term_ptr);
+ if (status == -1) {
+ ret_error0(-1, "terminals database is inaccessible\n");
+ } else if (status == 0) {
+ ret_error(0, "'%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);
- set_curterm(term_ptr);
+ if (command_character && getenv("CC"))
+ do_prototype();
- if (command_character && getenv("CC"))
- do_prototype();
+ strncpy(ttytype, cur_term->type.term_names, NAMESIZE - 1);
+ ttytype[NAMESIZE - 1] = '\0';
- strncpy(ttytype, cur_term->type.term_names, NAMESIZE - 1);
- ttytype[NAMESIZE - 1] = '\0';
+ cur_term->Filedes = Filedes;
+ cur_term->_termname = strdup(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;
- cur_term->Filedes = Filedes;
+ /*
+ * 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();
+ }
+ }
/*
- * 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.
+ * We should always check the screensize, just in case.
*/
- if (isatty(Filedes)) {
- def_prog_mode();
- baudrate();
- }
-
_nc_get_screensize(&LINES, &COLS);
if (errret)
}
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)
-{
- 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;
- }
- }
-}
projects / ncurses.git / blobdiff