--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/systty.h	Mon Aug 13 11:28:15 2007 +0200
@@ -0,0 +1,450 @@
+/* systty.h - System-dependent definitions for terminals.
+   Copyright (C) 1992, 1993, 1994 Free Software Foundation, Inc.
+
+This file is part of XEmacs.
+
+XEmacs is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 2, or (at your option) any
+later version.
+
+XEmacs is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with XEmacs; see the file COPYING.  If not, write to
+the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+/* Synched up with: FSF 19.30. */
+
+#ifndef _XEMACS_SYSTTY_H_
+#define _XEMACS_SYSTTY_H_
+
+#ifdef HAVE_TERMIOS
+# define HAVE_TCATTR
+#endif
+
+/* If we defined these before and we are about to redefine them,
+   prevent alarming warnings.  */
+#ifdef BSD_TERMIOS
+#undef NL0
+#undef NL1
+#undef CR0
+#undef CR1
+#undef CR2
+#undef CR3
+#undef TAB0
+#undef TAB1
+#undef TAB2
+#undef XTABS
+#undef BS0
+#undef BS1
+#undef FF0
+#undef FF1
+#undef ECHO
+#undef NOFLSH
+#undef TOSTOP
+#undef FLUSHO
+#undef PENDIN
+#endif
+
+/* Include the proper files.  */
+
+#ifdef HAVE_UNISTD_H
+#include <unistd.h>
+#endif
+
+/* XEmacs: TERMIOS is mo' better than TERMIO so we use it if it's
+   there.  Since TERMIO is backward-compatibility stuff if both it
+   and TERMIOS exist, it's more likely to be broken. */
+
+#if defined (HAVE_TERMIOS)
+
+/*****     (1) The TERMIOS way (POSIX style)     *****/
+
+# if defined (_AIX) && defined (_I386)
+#  include <termios.h>		/* termios.h needs to be before termio.h */
+#  include <termio.h>
+# else
+#  if !defined (NO_TERMIO)
+#   include <termio.h>
+#  endif
+#  include <termios.h>
+# endif /* _AIX && _I386 */
+# ifndef INCLUDED_FCNTL
+#  define INCLUDED_FCNTL
+#  include <fcntl.h>
+# endif
+
+#elif defined (HAVE_TERMIO)
+
+/*****    (2) The TERMIO way (system V style)    *****/
+
+# ifdef __DGUX
+#  include <sys/ioctl.h>
+# endif
+# ifndef NO_TERMIO
+#  include <termio.h>
+# endif /* not NO_TERMIO */
+# ifndef INCLUDED_FCNTL
+#  define INCLUDED_FCNTL
+#  include <fcntl.h>
+# endif
+
+#elif defined (DOS_NT)
+
+/*****             (3) The MSDOS/NT way              *****/
+
+/* Nothing doing */
+
+#else
+
+/*****              (4) The BSD way              *****/
+
+# ifdef linux /* XEmacs addition -- necessary? */
+#  include <bsd/sgtty.h>
+# else
+#  include <sgtty.h>
+# endif
+
+
+#endif /* HAVE_TERMIOS */
+
+/* XEmacs: I don't think we need the following crap. */
+#ifdef __GNU_LIBRARY__
+#include <termios.h>
+#endif
+
+/* Formerly there was a conditional that included sys/filio.h if
+   USG5_4 was defined, but this is already included in s/usg5-4.h */
+
+/* Generally useful to include this file: */
+
+/* But Sun OS has broken include files and doesn't want it included */
+#if !defined (DOS_NT) && !defined (WIN32) && !defined (SUNOS4)
+# include <sys/ioctl.h>
+#endif
+/* UNIPLUS systems may have FIONREAD.  */
+#ifdef UNIPLUS
+#include <sys.ioctl.h>
+#endif
+
+
+/* ----------------------------------------------------- */
+/*                 miscellaneous includes                */
+/* ----------------------------------------------------- */
+
+#ifdef AIXHFT
+/* Get files for keyboard remapping */
+#define HFNKEYS 2
+#include <sys/hft.h>
+#include <sys/devinfo.h>
+#endif
+
+/* XEmacs: We don't support BSD 4.1 any more */
+
+#ifdef NEED_BSDTTY
+#include <sys/bsdtty.h>
+#endif
+
+/* Include files for PTY's */
+
+#if defined (HPUX) && defined (HAVE_PTYS)
+#include <sys/ptyio.h>
+#endif
+
+#ifdef AIX
+#include <sys/pty.h>
+#endif /* AIX */
+
+#ifdef SYSV_PTYS
+# include <sys/types.h>
+# include <sys/tty.h>
+# ifdef titan
+#  include <sys/ttyhw.h>
+#  include <sys/stream.h>
+# endif
+# ifndef NO_PTY_H
+#  include <sys/pty.h>
+# endif
+#endif
+
+/* XEmacs: removed some random if defined (pfa) crap for FASYNC (SIGIO).
+   We've cleaned SIGIO up. */
+
+
+/* ----------------------------------------------------- */
+/*           inhibiting particular features              */
+/* ----------------------------------------------------- */
+
+
+#ifdef APOLLO
+#undef TIOCSTART
+#endif
+
+#if defined (XENIX) || defined (BROKEN_TIOCGETC)
+#undef TIOCGETC  /* Avoid confusing some conditionals that test this.  */
+#endif
+
+/* XEmacs: SIGIO is cleaned up so we remove the crap here that messes
+   with it (and FIONREAD and FASYNC, which are related). */
+
+#ifdef BROKEN_TIOCGWINSZ /* XEmacs addition */
+#undef TIOCGWINSZ
+#undef TIOCSWINSZ
+#endif
+
+/* On TERMIOS systems, the tcmumbleattr calls take care of these
+   parameters, and it's a bad idea to use them (on AIX, it makes the
+   tty hang for a long time).  */
+#if defined (TIOCGLTC) && !defined (HAVE_TERMIOS)
+#define HAVE_LTCHARS
+#endif
+
+#if defined (TIOCGETC) && !defined (HAVE_TERMIOS)
+#define HAVE_TCHARS
+#endif
+
+
+/* ----------------------------------------------------- */
+/*             disabling terminal functions              */
+/* ----------------------------------------------------- */
+
+/* Try to establish the correct character to disable terminal functions
+   in a system-independent manner.
+   We use the POSIX standard way to do this, and emulate on other systems. */
+
+#ifndef _POSIX_VDISABLE
+# if defined CDEL
+#  define _POSIX_VDISABLE CDEL
+# else
+#  define _POSIX_VDISABLE 255
+# endif
+#endif /* ! _POSIX_VDISABLE */
+
+
+/* ----------------------------------------------------- */
+/*    Get the number of characters queued for output     */
+/* ----------------------------------------------------- */
+
+/* EMACS_OUTQSIZE(FD, int *SIZE) stores the number of characters
+   queued for output to the terminal FD in *SIZE, if FD is a tty.
+   Returns -1 if there was an error (i.e. FD is not a tty), 0
+   otherwise.  */
+#ifdef TIOCOUTQ
+#define EMACS_OUTQSIZE(fd, size) ioctl (fd, TIOCOUTQ, size)
+#endif
+
+#ifdef HAVE_TERMIO
+#ifdef TCOUTQ
+#undef EMACS_OUTQSIZE
+#define EMACS_OUTQSIZE(fd, size) ioctl (fd, TCOUTQ, size)
+#endif
+#endif
+
+
+/* -------------------------------------------------------------------- */
+/*       Manipulate a terminal's current (foreground) process group     */
+/* -------------------------------------------------------------------- */
+
+/* EMACS_HAVE_TTY_PGRP is true if we can get and set the tty's current
+   controlling process group.
+
+   EMACS_GET_TTY_PGRP(int FD, int *PGID) sets *PGID the terminal FD's
+   current process group.  Return -1 if there is an error.
+
+   EMACS_SET_TTY_PGRP(int FD, int *PGID) sets the terminal FD's
+   current process group to *PGID.  Return -1 if there is an error.  */
+
+/* HPUX tty process group stuff doesn't work, says the anonymous voice
+   from the past.  */
+/* But HPUX people say it does, so I've removed it.  --ben */
+# ifdef TIOCGPGRP
+#  define EMACS_HAVE_TTY_PGRP
+# else
+#  ifdef HAVE_TERMIOS
+#   define EMACS_HAVE_TTY_PGRP
+#  endif
+# endif
+
+#ifdef EMACS_HAVE_TTY_PGRP
+
+#if defined (HAVE_TERMIOS) && ! defined (BSD_TERMIOS)
+
+/* Resist the urge to insert needless extra parentheses. */
+#define EMACS_GET_TTY_PGRP(fd, pgid) (*(pgid) = tcgetpgrp (fd))
+#define EMACS_SET_TTY_PGRP(fd, pgid) tcsetpgrp (fd, *(pgid))
+
+#elif defined (TIOCSPGRP)
+
+#define EMACS_GET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCGPGRP, (pgid)))
+#define EMACS_SET_TTY_PGRP(fd, pgid) (ioctl ((fd), TIOCSPGRP, (pgid)))
+
+#endif
+
+#endif /* EMACS_HAVE_TTY_PGRP */
+
+#ifndef EMACS_GET_TTY_PGRP
+
+/* Just ignore this for now and hope for the best */
+#define EMACS_GET_TTY_PGRP(fd, pgid) 0
+#define EMACS_SET_TTY_PGRP(fd, pgif) 0
+
+#endif
+
+/* XEmacs interim backward-compatibility */
+#define EMACS_GET_TTY_PROCESS_GROUP EMACS_GET_TTY_PGRP
+#define EMACS_SET_TTY_PROCESS_GROUP EMACS_SET_TTY_PGRP
+
+/* EMACS_GETPGRP (arg) returns the process group of the terminal.  */
+
+#ifdef GETPGRP_VOID
+#define EMACS_GETPGRP(x) getpgrp()
+#else
+#define EMACS_GETPGRP(x) getpgrp(x)
+#endif /* GETPGRP_VOID */
+
+/* XEmacs backward-compatibility.  Is 0 always a reasonable argument? */
+#define EMACS_GET_PROCESS_GROUP() EMACS_GETPGRP (0)
+
+/* XEmacs addition? */
+
+/* EMACS_SEPARATE_PROCESS_GROUP () creates a separate process group for the
+   running process. */
+
+/* EMACS_SET_PROCESS_GROUP () sets our process group as specified. */
+
+/* POSIX calls for setpgid(), so we use it if it's available.
+   Otherwise use setpgrp(), in USG or BSD flavor.  Note that
+   on newer systems, setpgrp() has unwanted effects (e.g.
+   creating a new session), so we want to avoid its use
+   if possible.
+
+   NOTE: On some older systems, we should consider using setpgrp2()
+   if it exists.  This is sufficiently rare, though, that there
+   seems no point in autodetecting it.  Currently dgux.h is the
+   only place where this has to be munged. */
+
+#if defined (HAVE_SETPGID)
+#  define EMACS_SEPARATE_PROCESS_GROUP() setpgid (0, 0)
+#  define EMACS_SET_PROCESS_GROUP(pg) setpgid (0, pg)
+#elif defined (USG)
+#  define EMACS_SEPARATE_PROCESS_GROUP() setpgrp ()
+/* old (pre-SVR4) USG's don't provide any way to do this.
+   No big loss -- it just means that ^Z won't work right
+   if we're run from sh. */
+#  define EMACS_SET_PROCESS_GROUP(pg)
+#elif defined(__MINGW32__)
+#  define EMACS_SEPARATE_PROCESS_GROUP() 
+#else
+/* Under NeXTstep, a process group of 0 is not the same as specifying
+   your own process ID, so we go ahead and specify it explicitly. */
+#  define EMACS_SEPARATE_PROCESS_GROUP() setpgrp (0, getpid ())
+#  define EMACS_SET_PROCESS_GROUP(pg) setpgrp (0, pg)
+#endif
+
+
+/* --------------------------------------------------------- */
+/*   Manipulate a TTY's input/output processing parameters   */
+/* --------------------------------------------------------- */
+
+/* struct emacs_tty is a structure used to hold the current tty
+   parameters.  If the terminal has several structures describing its
+   state, for example a struct tchars, a struct sgttyb, a struct
+   tchars, a struct ltchars, and a struct pagechars, struct
+   emacs_tty should contain an element for each parameter struct
+   that Emacs may change.
+
+   EMACS_GET_TTY (int FD, struct emacs_tty *P) stores the parameters
+   of the tty on FD in *P.  Return zero if all's well, or -1 if we ran
+   into an error we couldn't deal with.
+
+   EMACS_SET_TTY (int FD, struct emacs_tty *P, int flushp)
+   sets the parameters of the tty on FD according to the contents of
+   *P.  If flushp is non-zero, we discard queued input to be
+   written before making the change.
+   Return 0 if all went well, and -1 if anything failed.
+
+   EMACS_TTY_TABS_OK (struct emacs_tty *P) is false iff the kernel
+   expands tabs to spaces upon output; in that case, there is no
+   advantage to using tabs over spaces.  */
+
+
+/* For each tty parameter structure that Emacs might want to save and restore,
+   - include an element for it in this structure, and
+   - extend the emacs_{get,set}_tty functions in sysdep.c to deal with the
+     new members.  */
+
+struct emacs_tty {
+
+/* There is always one of the following elements, so there is no need
+   for dummy get and set definitions.  */
+#ifdef HAVE_TCATTR
+  struct termios main;
+#else /* !HAVE_TCATTR */
+#ifdef HAVE_TERMIO
+  struct termio main;
+#else /* !HAVE_TERMIO */
+#ifdef DOS_NT
+  int main;
+#else  /* not DOS_NT */
+  struct sgttyb main;
+#endif /* not DOS_NT */
+#endif /* !HAVE_TERMIO */
+#endif /* !HAVE_TCATTR */
+
+/* If we have TERMIOS, we don't need to do this - they're taken care of
+   by the tc*attr calls.  */
+#ifndef HAVE_TERMIOS
+#ifdef HAVE_LTCHARS
+  struct ltchars ltchars;
+#endif /* HAVE_LTCHARS */
+
+#ifdef HAVE_TCHARS
+  struct tchars tchars;
+  int lmode;
+#endif /* HAVE_TCHARS */
+#endif /* HAVE_TERMIOS */
+};
+
+/* Define EMACS_GET_TTY and EMACS_SET_TTY,
+   the macros for reading and setting parts of `struct emacs_tty'.
+
+   These got pretty unmanageable (huge macros are hard to debug), and
+   finally needed some code which couldn't be done as part of an
+   expression, so we moved them out to their own functions in sysdep.c.  */
+#define EMACS_GET_TTY(fd, p)        emacs_get_tty (fd, p)
+#define EMACS_SET_TTY(fd, p, waitp) emacs_set_tty (fd, p, waitp)
+
+
+/* --------------------------------------------------------- */
+/*                Define EMACS_TTY_TABS_OK                   */
+/* --------------------------------------------------------- */
+
+#ifdef HAVE_TERMIOS
+
+#ifdef TABDLY
+#define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
+#else
+#define EMACS_TTY_TABS_OK(p) 1
+#endif /* TABDLY */
+
+#else /* not def HAVE_TERMIOS */
+#ifdef HAVE_TERMIO
+
+#define EMACS_TTY_TABS_OK(p) (((p)->main.c_oflag & TABDLY) != TAB3)
+
+#else /* neither HAVE_TERMIO nor HAVE_TERMIOS */
+#ifdef DOS_NT
+#define EMACS_TTY_TABS_OK(p) 0
+#else /* not DOS_NT */
+#define EMACS_TTY_TABS_OK(p) (((p)->main.sg_flags & XTABS) != XTABS)
+#endif /* not DOS_NT */
+
+#endif /* not def HAVE_TERMIO */
+#endif /* not def HAVE_TERMIOS */
+
+#endif /* _XEMACS_SYSTTY_H_ */