275 lines
8.0 KiB
C
275 lines
8.0 KiB
C
/* rldefs.h -- an attempt to isolate some of the system-specific defines
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for readline. This should be included after any files that define
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system-specific constants like _POSIX_VERSION or USG. */
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/* Copyright (C) 1987,1989 Free Software Foundation, Inc.
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This file contains the Readline Library (the Library), a set of
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routines for providing Emacs style line input to programs that ask
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for it.
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The Library is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 1, or (at your option)
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any later version.
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The Library is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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The GNU General Public License is often shipped with GNU software, and
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is generally kept in a file called COPYING or LICENSE. If you do not
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have a copy of the license, write to the Free Software Foundation,
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675 Mass Ave, Cambridge, MA 02139, USA. */
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#if !defined (_RLDEFS_H)
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#define _RLDEFS_H
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#if defined (__GNUC__)
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# undef alloca
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# define alloca __builtin_alloca
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#else
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# if defined (sparc) || defined (HAVE_ALLOCA_H)
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# include <alloca.h>
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# endif
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#endif
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#define NEW_TTY_DRIVER
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#define HAVE_BSD_SIGNALS
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/* #define USE_XON_XOFF */
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#if defined(__MSDOS__) || defined(_WIN32)
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#define NO_SYS_FILE
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#define SIGALRM 1234
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#undef NEW_TTY_DRIVER
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#undef HAVE_BSD_SIGNALS
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#define MINIMAL
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#endif
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#if defined (__linux__)
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# include <termcap.h>
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#endif /* __linux__ */
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/* Some USG machines have BSD signal handling (sigblock, sigsetmask, etc.) */
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/* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode. */
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#if defined (USG) && !(defined (hpux) || defined (__hpux))
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# undef HAVE_BSD_SIGNALS
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#endif
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#define ScreenCols() 80
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#define ScreenRows() 24
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#define ScreenSetCursor() abort();
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#define ScreenGetCursor() abort();
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/* System V machines use termio. */
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#if !defined (_POSIX_VERSION)
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/* CYGNUS LOCAL accept __hpux as well as hpux for HP compiler in ANSI mode.
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Add __osf__ to list of machines to force use of termio.h */
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# if defined (USG) || defined (hpux) || defined (__hpux) || defined (Xenix) || defined (sgi) || defined (DGUX) || defined (__osf__)
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# undef NEW_TTY_DRIVER
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# define TERMIO_TTY_DRIVER
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# include <termio.h>
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# if !defined (TCOON)
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# define TCOON 1
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# endif
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# endif /* USG || hpux || Xenix || sgi || DUGX || __osf__ */
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#endif /* !_POSIX_VERSION */
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/* Posix systems use termios and the Posix signal functions. */
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#if defined (_POSIX_VERSION)
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# if !defined (TERMIOS_MISSING)
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# undef NEW_TTY_DRIVER
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# define TERMIOS_TTY_DRIVER
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# include <termios.h>
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# endif /* !TERMIOS_MISSING */
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# define HAVE_POSIX_SIGNALS
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# if !defined (O_NDELAY)
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# define O_NDELAY O_NONBLOCK /* Posix-style non-blocking i/o */
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# endif /* O_NDELAY */
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#endif /* _POSIX_VERSION */
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/* System V.3 machines have the old 4.1 BSD `reliable' signal interface. */
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#if !defined (HAVE_BSD_SIGNALS) && !defined (HAVE_POSIX_SIGNALS)
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# if defined (USGr3)
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# if !defined (HAVE_USG_SIGHOLD)
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# define HAVE_USG_SIGHOLD
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# endif /* !HAVE_USG_SIGHOLD */
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# endif /* USGr3 */
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#endif /* !HAVE_BSD_SIGNALS && !HAVE_POSIX_SIGNALS */
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/* Other (BSD) machines use sgtty. */
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#if defined (NEW_TTY_DRIVER)
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# include <sgtty.h>
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#endif
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/* Define _POSIX_VDISABLE if we are not using the `new' tty driver and
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it is not already defined. It is used both to determine if a
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special character is disabled and to disable certain special
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characters. Posix systems should set to 0, USG systems to -1. */
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#if !defined (NEW_TTY_DRIVER) && !defined (_POSIX_VDISABLE)
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# if defined (_POSIX_VERSION)
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# define _POSIX_VDISABLE 0
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# else /* !_POSIX_VERSION */
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# define _POSIX_VDISABLE -1
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# endif /* !_POSIX_VERSION */
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#endif /* !NEW_TTY_DRIVER && !_POSIX_VDISABLE */
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#if 1
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# define D_NAMLEN(d) strlen ((d)->d_name)
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#else /* !1 */
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#if !defined (SHELL) && (defined (_POSIX_VERSION) || defined (USGr3))
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# if !defined (HAVE_DIRENT_H)
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# define HAVE_DIRENT_H
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# endif /* !HAVE_DIRENT_H */
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#endif /* !SHELL && (_POSIX_VERSION || USGr3) */
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#if defined (HAVE_DIRENT_H)
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# include <dirent.h>
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# if !defined (direct)
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# define direct dirent
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# endif /* !direct */
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# define D_NAMLEN(d) strlen ((d)->d_name)
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#else /* !HAVE_DIRENT_H */
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# define D_NAMLEN(d) ((d)->d_namlen)
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# if defined (USG)
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# if defined (Xenix)
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# include <sys/ndir.h>
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# else /* !Xenix (but USG...) */
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# include "ndir.h"
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# endif /* !Xenix */
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# else /* !USG */
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# include <sys/dir.h>
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# endif /* !USG */
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#endif /* !HAVE_DIRENT_H */
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#endif /* !1 */
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#if defined (USG) && defined (TIOCGWINSZ) && !defined (Linux)
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# if defined (_AIX)
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/* AIX 4.x seems to reference struct uio within a prototype
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in stream.h, but doesn't cause the uio include file to
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be included. */
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# include <sys/uio.h>
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# endif
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# include <sys/stream.h>
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# if defined (HAVE_SYS_PTEM_H)
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# include <sys/ptem.h>
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# endif /* HAVE_SYS_PTEM_H */
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# if defined (HAVE_SYS_PTE_H)
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# include <sys/pte.h>
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# endif /* HAVE_SYS_PTE_H */
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#endif /* USG && TIOCGWINSZ && !Linux */
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/* Posix macro to check file in statbuf for directory-ness.
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This requires that <sys/stat.h> be included before this test. */
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#if defined (S_IFDIR) && !defined (S_ISDIR)
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#define S_ISDIR(m) (((m)&S_IFMT) == S_IFDIR)
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#endif
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/* Posix macro to check file in statbuf for file-ness.
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This requires that <sys/stat.h> be included before this test. */
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#if defined (S_IFREG) && !defined (S_ISREG)
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#define S_ISREG(m) (((m)&S_IFMT) == S_IFREG)
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#endif
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#if !defined (strchr) && !defined (__STDC__)
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extern char *strchr (), *strrchr ();
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#endif /* !strchr && !__STDC__ */
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#if defined (HAVE_VARARGS_H)
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# include <varargs.h>
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#endif /* HAVE_VARARGS_H */
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/* This definition is needed by readline.c, rltty.c, and signals.c. */
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/* If on, then readline handles signals in a way that doesn't screw. */
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#define HANDLE_SIGNALS
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#if defined(_WIN32) || defined(__MSDOS__)
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#undef HANDLE_SIGNALS
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#endif
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#if !defined (emacs_mode)
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# define no_mode -1
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# define vi_mode 0
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# define emacs_mode 1
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#endif
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/* Define some macros for dealing with assorted signalling disciplines.
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These macros provide a way to use signal blocking and disabling
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without smothering your code in a pile of #ifdef's.
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SIGNALS_UNBLOCK; Stop blocking all signals.
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{
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SIGNALS_DECLARE_SAVED (name); Declare a variable to save the
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signal blocking state.
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...
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SIGNALS_BLOCK (SIGSTOP, name); Block a signal, and save the previous
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state for restoration later.
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...
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SIGNALS_RESTORE (name); Restore previous signals.
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}
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*/
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#ifdef HAVE_POSIX_SIGNALS
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/* POSIX signals */
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#define SIGNALS_UNBLOCK \
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do { sigset_t set; \
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sigemptyset (&set); \
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sigprocmask (SIG_SETMASK, &set, (sigset_t *)NULL); \
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} while (0)
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#define SIGNALS_DECLARE_SAVED(name) sigset_t name
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#define SIGNALS_BLOCK(SIG, saved) \
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do { sigset_t set; \
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sigemptyset (&set); \
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sigaddset (&set, SIG); \
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sigprocmask (SIG_BLOCK, &set, &saved); \
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} while (0)
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#define SIGNALS_RESTORE(saved) \
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sigprocmask (SIG_SETMASK, &saved, (sigset_t *)NULL)
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#else /* HAVE_POSIX_SIGNALS */
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#ifdef HAVE_BSD_SIGNALS
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/* BSD signals */
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#define SIGNALS_UNBLOCK sigsetmask (0)
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#define SIGNALS_DECLARE_SAVED(name) int name
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#define SIGNALS_BLOCK(SIG, saved) saved = sigblock (sigmask (SIG))
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#define SIGNALS_RESTORE(saved) sigsetmask (saved)
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#else /* HAVE_BSD_SIGNALS */
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/* None of the Above */
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#define SIGNALS_UNBLOCK /* nothing */
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#define SIGNALS_DECLARE_SAVED(name) /* nothing */
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#define SIGNALS_BLOCK(SIG, saved) /* nothing */
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#define SIGNALS_RESTORE(saved) /* nothing */
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#endif /* HAVE_BSD_SIGNALS */
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#endif /* HAVE_POSIX_SIGNALS */
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#if !defined (strchr)
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extern char *strchr ();
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#endif
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#if !defined (strrchr)
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extern char *strrchr ();
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#endif
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#ifdef __STDC__
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#include <stddef.h>
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extern size_t strlen (const char *s);
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#endif /* __STDC__ */
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/* End of signal handling definitions. */
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#endif /* !_RLDEFS_H */
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