ncurses 5.6 - patch 20080804
[ncurses.git] / ncurses / tinfo / lib_ttyflags.c
index 0e57c512b20f3e0b107cd7f85f87288743c01eb6..a2b38a3327f12e3ca264a85e9afafc59b68f314c 100644 (file)
@@ -1,5 +1,5 @@
 /****************************************************************************
- * 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            *
  */
 
 #include <curses.priv.h>
-#include <term.h>      /* cur_term */
+#include <term.h>              /* cur_term */
 
-MODULE_ID("$Id: lib_ttyflags.c,v 1.3 1999/10/22 21:38:55 tom Exp $")
+MODULE_ID("$Id: lib_ttyflags.c,v 1.18 2008/08/03 22:10:44 tom Exp $")
 
-#undef tabs
+NCURSES_EXPORT(int)
+_nc_get_tty_mode(TTY * buf)
+{
+    int result = OK;
+
+    if (buf == 0) {
+       result = ERR;
+    } else {
+       if (cur_term == 0) {
+           result = ERR;
+       } else {
+           for (;;) {
+               if (GET_TTY(cur_term->Filedes, buf) != 0) {
+                   if (errno == EINTR)
+                       continue;
+                   result = ERR;
+               }
+               break;
+           }
+       }
 
-#ifdef TAB3
-# define tabs TAB3
-#else
-# ifdef XTABS
-#  define tabs XTABS
-# else
-#  ifdef OXTABS
-#   define tabs OXTABS
-#  else
-#   define tabs 0
-#  endif
-# endif
-#endif
+       if (result == ERR)
+           memset(buf, 0, sizeof(*buf));
 
-int _nc_get_tty_mode(TTY *buf)
-{
-       if (cur_term == 0
-        || GET_TTY(cur_term->Filedes, buf) != 0)
-               return(ERR);
-       TR(TRACE_BITS,("_nc_get_tty_mode: %s", _nc_tracebits()));
-       return (OK);
+       TR(TRACE_BITS, ("_nc_get_tty_mode(%d): %s",
+                       cur_term ? cur_term->Filedes : -1,
+                       _nc_trace_ttymode(buf)));
+    }
+    return (result);
 }
 
-int _nc_set_tty_mode(TTY *buf)
+NCURSES_EXPORT(int)
+_nc_set_tty_mode(TTY * buf)
 {
-       if (cur_term == 0
-        || SET_TTY(cur_term->Filedes, buf) != 0)
-               return(ERR);
-       TR(TRACE_BITS,("_nc_set_tty_mode: %s", _nc_tracebits()));
-       return (OK);
+    int result = OK;
+
+    if (buf == 0) {
+       result = ERR;
+    } else {
+       if (cur_term == 0) {
+           result = ERR;
+       } else {
+           for (;;) {
+               if (SET_TTY(cur_term->Filedes, buf) != 0) {
+                   if (errno == EINTR)
+                       continue;
+                   if ((errno == ENOTTY) && (SP != 0))
+                       SP->_notty = TRUE;
+                   result = ERR;
+               }
+               break;
+           }
+       }
+       TR(TRACE_BITS, ("_nc_set_tty_mode(%d): %s",
+                       cur_term ? cur_term->Filedes : -1,
+                       _nc_trace_ttymode(buf)));
+    }
+    return (result);
 }
 
-int def_shell_mode(void)
+NCURSES_EXPORT(int)
+def_shell_mode(void)
 {
-       T((T_CALLED("def_shell_mode()")));
+    int rc = ERR;
+
+    T((T_CALLED("def_shell_mode()")));
 
+    if (cur_term != 0) {
        /*
-        * Turn off the XTABS bit in the tty structure if it was on.  If XTABS
-        * was on, remove the tab and backtab capabilities.
+        * If XTABS was on, remove the tab and backtab capabilities.
         */
-
-       if (_nc_get_tty_mode(&cur_term->Ottyb) != OK)
-               returnCode(ERR);
+       if (_nc_get_tty_mode(&cur_term->Ottyb) == OK) {
 #ifdef TERMIOS
-       if (cur_term->Ottyb.c_oflag & tabs)
+           if (cur_term->Ottyb.c_oflag & OFLAGS_TABS)
                tab = back_tab = NULL;
 #else
-       if (cur_term->Ottyb.sg_flags & XTABS)
+           if (cur_term->Ottyb.sg_flags & XTABS)
                tab = back_tab = NULL;
 #endif
-       returnCode(OK);
+           rc = OK;
+       }
+    }
+    returnCode(rc);
 }
 
-int def_prog_mode(void)
+NCURSES_EXPORT(int)
+def_prog_mode(void)
 {
-       T((T_CALLED("def_prog_mode()")));
+    int rc = ERR;
+
+    T((T_CALLED("def_prog_mode()")));
 
-       if (_nc_get_tty_mode(&cur_term->Nttyb) != OK)
-               returnCode(ERR);
+    if (cur_term != 0) {
+       /*
+        * Turn off the XTABS bit in the tty structure if it was on.
+        */
+       if (_nc_get_tty_mode(&cur_term->Nttyb) == OK) {
 #ifdef TERMIOS
-       cur_term->Nttyb.c_oflag &= ~tabs;
+           cur_term->Nttyb.c_oflag &= ~OFLAGS_TABS;
 #else
-       cur_term->Nttyb.sg_flags &= ~XTABS;
+           cur_term->Nttyb.sg_flags &= ~XTABS;
 #endif
-       returnCode(OK);
+           rc = OK;
+       }
+    }
+    returnCode(rc);
 }
 
-int reset_prog_mode(void)
+NCURSES_EXPORT(int)
+reset_prog_mode(void)
 {
-       T((T_CALLED("reset_prog_mode()")));
-
-       if (cur_term != 0) {
-               _nc_set_tty_mode(&cur_term->Nttyb);
-               if (SP) {
-                       if (stdscr && stdscr->_use_keypad)
-                               _nc_keypad(TRUE);
-                       NC_BUFFERED(TRUE);
-               }
-               returnCode(OK);
+    T((T_CALLED("reset_prog_mode()")));
+
+    if (cur_term != 0) {
+       if (_nc_set_tty_mode(&cur_term->Nttyb) == OK) {
+           if (SP) {
+               if (SP->_keypad_on)
+                   _nc_keypad(SP, TRUE);
+               NC_BUFFERED(TRUE);
+           }
+           returnCode(OK);
        }
-       returnCode(ERR);
+    }
+    returnCode(ERR);
 }
 
-int reset_shell_mode(void)
+NCURSES_EXPORT(int)
+reset_shell_mode(void)
 {
-       T((T_CALLED("reset_shell_mode()")));
-
-       if (cur_term != 0) {
-               if (SP)
-               {
-                       _nc_keypad(FALSE);
-                       _nc_flush();
-                       NC_BUFFERED(FALSE);
-               }
-               returnCode(_nc_set_tty_mode(&cur_term->Ottyb));
+    T((T_CALLED("reset_shell_mode()")));
+
+    if (cur_term != 0) {
+       if (SP) {
+           _nc_keypad(SP, FALSE);
+           _nc_flush();
+           NC_BUFFERED(FALSE);
        }
-       returnCode(ERR);
+       returnCode(_nc_set_tty_mode(&cur_term->Ottyb));
+    }
+    returnCode(ERR);
+}
+
+static TTY *
+saved_tty(void)
+{
+    TTY *result = 0;
+
+    if (SP != 0) {
+       result = &(SP->_saved_tty);
+    } else {
+       if (_nc_prescreen.saved_tty == 0) {
+           _nc_prescreen.saved_tty = typeCalloc(TTY, 1);
+       }
+       result = _nc_prescreen.saved_tty;
+    }
+    return result;
 }
 
 /*
@@ -146,18 +203,18 @@ int reset_shell_mode(void)
 **
 */
 
-static TTY   buf;
-
-int savetty(void)
+NCURSES_EXPORT(int)
+savetty(void)
 {
-       T((T_CALLED("savetty()")));
+    T((T_CALLED("savetty()")));
 
-       returnCode(_nc_get_tty_mode(&buf));
+    returnCode(_nc_get_tty_mode(saved_tty()));
 }
 
-int resetty(void)
+NCURSES_EXPORT(int)
+resetty(void)
 {
-       T((T_CALLED("resetty()")));
+    T((T_CALLED("resetty()")));
 
-       returnCode(_nc_set_tty_mode(&buf));
+    returnCode(_nc_set_tty_mode(saved_tty()));
 }