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/* rldefs.h -- an attempt to isolate some of the system-specific defines
for readline. This should be included after any files that define
system-specific constants like _POSIX_VERSION or USG. */
/* Copyright (C) 1987,1989 Free Software Foundation, Inc.
This file contains the Readline Library (the Library), a set of
routines for providing Emacs style line input to programs that ask
for it.
The Library 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 1, or (at your option)
any later version.
The Library 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.
The GNU General Public License is often shipped with GNU software, and
is generally kept in a file called COPYING or LICENSE. If you do not
have a copy of the license, write to the Free Software Foundation,
675 Mass Ave, Cambridge, MA 02139, USA. */
#if !defined (_RLDEFS_H)
#define _RLDEFS_H
#if defined (__GNUC__)
# undef alloca
# define alloca __builtin_alloca
#else
# if defined (sparc) || defined (HAVE_ALLOCA_H)
# include <alloca.h>
# endif
#endif
#define NEW_TTY_DRIVER
#define HAVE_BSD_SIGNALS
/* #define USE_XON_XOFF */
#ifdef __MSDOS__
#undef NEW_TTY_DRIVER
#undef HAVE_BSD_SIGNALS
#endif
#if defined (__linux__)
# include <termcap.h>
#endif /* __linux__ */
/* Some USG machines have BSD signal handling (sigblock, sigsetmask, etc.) */
/* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode. */
#if defined (USG) && !(defined (hpux) || defined (__hpux))
# undef HAVE_BSD_SIGNALS
#endif
/* System V machines use termio. */
#if !defined (_POSIX_VERSION)
/* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode. */
# if defined (USG) || defined (hpux) || defined (__hpux) || defined (Xenix) || defined (sgi) || defined (DGUX)
# undef NEW_TTY_DRIVER
# define TERMIO_TTY_DRIVER
# include <termio.h>
# if !defined (TCOON)
# define TCOON 1
# endif
# endif /* USG || hpux || Xenix || sgi || DUGX */
#endif /* !_POSIX_VERSION */
/* Posix systems use termios and the Posix signal functions. */
#if defined (_POSIX_VERSION)
# if !defined (TERMIOS_MISSING)
# undef NEW_TTY_DRIVER
# define TERMIOS_TTY_DRIVER
# include <termios.h>
# endif /* !TERMIOS_MISSING */
# define HAVE_POSIX_SIGNALS
# if !defined (O_NDELAY)
# define O_NDELAY O_NONBLOCK /* Posix-style non-blocking i/o */
# endif /* O_NDELAY */
#endif /* _POSIX_VERSION */
/* System V.3 machines have the old 4.1 BSD `reliable' signal interface. */
#if !defined (HAVE_BSD_SIGNALS) && !defined (HAVE_POSIX_SIGNALS)
# if defined (USGr3)
# if !defined (HAVE_USG_SIGHOLD)
# define HAVE_USG_SIGHOLD
# endif /* !HAVE_USG_SIGHOLD */
# endif /* USGr3 */
#endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */
/* Other (BSD) machines use sgtty. */
#if defined (NEW_TTY_DRIVER)
# include <sgtty.h>
#endif
/* Define _POSIX_VDISABLE if we are not using the `new' tty driver and
it is not already defined. It is used both to determine if a
special character is disabled and to disable certain special
characters. Posix systems should set to 0, USG systems to -1. */
#if !defined (NEW_TTY_DRIVER) && !defined (_POSIX_VDISABLE)
# if defined (_POSIX_VERSION)
# define _POSIX_VDISABLE 0
# else /* !_POSIX_VERSION */
# define _POSIX_VDISABLE -1
# endif /* !_POSIX_VERSION */
#endif /* !NEW_TTY_DRIVER && !_POSIX_VDISABLE */
#if 1
# define D_NAMLEN(d) strlen ((d)->d_name)
#else /* !1 */
#if !defined (SHELL) && (defined (_POSIX_VERSION) || defined (USGr3))
# if !defined (HAVE_DIRENT_H)
# define HAVE_DIRENT_H
# endif /* !HAVE_DIRENT_H */
#endif /* !SHELL && (_POSIX_VERSION || USGr3) */
#if defined (HAVE_DIRENT_H)
# include <dirent.h>
# if !defined (direct)
# define direct dirent
# endif /* !direct */
# define D_NAMLEN(d) strlen ((d)->d_name)
#else /* !HAVE_DIRENT_H */
# define D_NAMLEN(d) ((d)->d_namlen)
# if defined (USG)
# if defined (Xenix)
# include <sys/ndir.h>
# else /* !Xenix (but USG...) */
# include "ndir.h"
# endif /* !Xenix */
# else /* !USG */
# include <sys/dir.h>
# endif /* !USG */
#endif /* !HAVE_DIRENT_H */
#endif /* !1 */
#if defined (USG) && defined (TIOCGWINSZ) && !defined (Linux)
# include <sys/stream.h>
# if defined (HAVE_SYS_PTEM_H)
# include <sys/ptem.h>
# endif /* HAVE_SYS_PTEM_H */
# if defined (HAVE_SYS_PTE_H)
# include <sys/pte.h>
# endif /* HAVE_SYS_PTE_H */
#endif /* USG && TIOCGWINSZ && !Linux */
/* Posix macro to check file in statbuf for directory-ness.
This requires that <sys/stat.h> be included before this test. */
#if defined (S_IFDIR) && !defined (S_ISDIR)
#define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR)
#endif
#if !defined (strchr) && !defined (__STDC__)
extern char *strchr (), *strrchr ();
#endif /* !strchr && !__STDC__ */
#if defined (HAVE_VARARGS_H)
# include <varargs.h>
#endif /* HAVE_VARARGS_H */
/* This definition is needed by readline.c, rltty.c, and signals.c. */
/* If on, then readline handles signals in a way that doesn't screw. */
#define HANDLE_SIGNALS
#if !defined (emacs_mode)
# define no_mode -1
# define vi_mode 0
# define emacs_mode 1
#endif
/* Define some macros for dealing with assorted signalling disciplines.
These macros provide a way to use signal blocking and disabling
without smothering your code in a pile of #ifdef's.
SIGNALS_UNBLOCK; Stop blocking all signals.
{
SIGNALS_DECLARE_SAVED (name); Declare a variable to save the
signal blocking state.
...
SIGNALS_BLOCK (SIGSTOP, name); Block a signal, and save the previous
state for restoration later.
...
SIGNALS_RESTORE (name); Restore previous signals.
}
*/
#ifdef HAVE_POSIX_SIGNALS
/* POSIX signals */
#define SIGNALS_UNBLOCK \
do { sigset_t set; \
sigemptyset (&set); \
sigprocmask (SIG_SETMASK, &set, (sigset_t *)NULL); \
} while (0)
#define SIGNALS_DECLARE_SAVED(name) sigset_t name
#define SIGNALS_BLOCK(SIG, saved) \
do { sigset_t set; \
sigemptyset (&set); \
sigaddset (&set, SIG); \
sigprocmask (SIG_BLOCK, &set, &saved); \
} while (0)
#define SIGNALS_RESTORE(saved) \
sigprocmask (SIG_SETMASK, &saved, (sigset_t *)NULL)
#else /* HAVE_POSIX_SIGNALS */
#ifdef HAVE_BSD_SIGNALS
/* BSD signals */
#define SIGNALS_UNBLOCK sigsetmask (0)
#define SIGNALS_DECLARE_SAVED(name) int name
#define SIGNALS_BLOCK(SIG, saved) saved = sigblock (sigmask (SIG))
#define SIGNALS_RESTORE(saved) sigsetmask (saved)
#else /* HAVE_BSD_SIGNALS */
/* None of the Above */
#define SIGNALS_UNBLOCK /* nothing */
#define SIGNALS_DECLARE_SAVED(name) /* nothing */
#define SIGNALS_BLOCK(SIG, saved) /* nothing */
#define SIGNALS_RESTORE(saved) /* nothing */
#endif /* HAVE_BSD_SIGNALS */
#endif /* HAVE_POSIX_SIGNALS */
/* End of signal handling definitions. */
#endif /* !_RLDEFS_H */
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