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/* Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2009
Free Software Foundation, Inc.
Written by Eli Zaretskii (eliz@is.elta.co.il)
This file is part of groff.
groff 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 3 of the License, or
(at your option) any later version.
groff 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 this program. If not, see <http://www.gnu.org/licenses/>. */
/* This header file compartmentalize all idiosyncrasies of non-Posix
systems, such as MS-DOS, MS-Windows, etc. It should be loaded after
the system headers like stdio.h to protect against warnings and error
messages w.r.t. redefining macros. */
#if defined _MSC_VER
# ifndef _WIN32
# define _WIN32
# endif
#endif
#if defined(__MSDOS__) || defined(__EMX__) \
|| (defined(_WIN32) && !defined(_UWIN) && !defined(__CYGWIN__))
/* Binary I/O nuisances. */
# include <fcntl.h>
# include <io.h>
# ifdef HAVE_UNISTD_H
# include <unistd.h>
# endif
# ifndef STDIN_FILENO
# define STDIN_FILENO 0
# define STDOUT_FILENO 1
# define STDERR_FILENO 2
# endif
# ifdef HAVE_DIRECT_H
# include <direct.h>
# endif
# ifdef HAVE_PROCESS_H
# include <process.h>
# endif
# if defined(_MSC_VER) || defined(__MINGW32__)
# define POPEN_RT "rt"
# define POPEN_WT "wt"
# define popen(c,m) _popen(c,m)
# define pclose(p) _pclose(p)
# define pipe(pfd) _pipe((pfd),0,_O_BINARY|_O_NOINHERIT)
# define mkdir(p,m) _mkdir(p)
# define setmode(f,m) _setmode(f,m)
# define WAIT(s,p,m) _cwait(s,p,m)
# define creat(p,m) _creat(p,m)
# define read(f,b,s) _read(f,b,s)
# define write(f,b,s) _write(f,b,s)
# define dup(f) _dup(f)
# define dup2(f1,f2) _dup2(f1,f2)
# define close(f) _close(f)
# define isatty(f) _isatty(f)
# define access(p,m) _access(p,m)
# endif
# define SET_BINARY(f) do {if (!isatty(f)) setmode(f,O_BINARY);} while(0)
# define FOPEN_RB "rb"
# define FOPEN_WB "wb"
# define FOPEN_RWB "wb+"
# ifndef O_BINARY
# ifdef _O_BINARY
# define O_BINARY (_O_BINARY)
# endif
# endif
/* The system shell. Groff assumes a Unixy shell, but non-Posix
systems don't have standard places where it lives, and might not
have it installed to begin with. We want to give them some leeway. */
# ifdef __EMX__
# define getcwd(b,s) _getcwd2(b,s)
# else
# define BSHELL (system_shell_name())
# define BSHELL_DASH_C (system_shell_dash_c())
# define IS_BSHELL(s) (is_system_shell(s))
# endif
/* The separator for directories in PATH and other environment
variables. */
# define PATH_SEP ";"
# define PATH_SEP_CHAR ';'
/* Characters that separate directories in a path name. */
# define DIR_SEPS "/\\:"
/* How to tell if the argument is an absolute file name. */
# define IS_ABSOLUTE(f) \
((f)[0] == '/' || (f)[0] == '\\' || (f)[0] && (f)[1] == ':')
/* The executable extension. */
# define EXE_EXT ".exe"
/* Possible executable extensions. */
# define PATH_EXT ".com;.exe;.bat;.cmd"
/* The system null device. */
# define NULL_DEV "NUL"
/* The default place to create temporary files. */
# ifndef P_tmpdir
# ifdef _P_tmpdir
# define P_tmpdir _P_tmpdir
# else
# define P_tmpdir "c:/temp"
# endif
# endif
/* Prototypes. */
# ifdef __cplusplus
extern "C" {
# endif
char * system_shell_name(void);
const char * system_shell_dash_c(void);
int is_system_shell(const char *);
# ifdef __cplusplus
}
# endif
#endif
#if defined(_WIN32) && !defined(_UWIN) && !defined(__CYGWIN__)
/* Win32 implementations which use the Microsoft runtime library
* are prone to hanging when a pipe reader quits with unread data in the pipe.
* `gtroff' avoids this, by invoking `FLUSH_INPUT_PIPE()', defined as ... */
# define FLUSH_INPUT_PIPE(fd) \
do if (!isatty(fd)) \
{ \
char drain[BUFSIZ]; \
while (read(fd, drain, sizeof(drain)) > 0) \
; \
} while (0)
/* The Microsoft runtime library also has a broken argument passing mechanism,
* which may result in improper grouping of arguments passed to a child process
* by the `spawn()' family of functions. In `groff', only the `spawnvp()'
* function is affected; we work around this defect, by substituting a
* wrapper function in place of `spawnvp()' calls. */
# ifdef __cplusplus
extern "C" {
# endif
int spawnvp_wrapper(int, char *, char **);
# ifdef __cplusplus
}
# endif
# ifndef SPAWN_FUNCTION_WRAPPERS
# undef spawnvp
# define spawnvp spawnvp_wrapper
# undef _spawnvp
# define _spawnvp spawnvp
# endif /* SPAWN_FUNCTION_WRAPPERS */
#else
/* Other implementations do not suffer from Microsoft runtime bugs,
* but `gtroff' requires a dummy definition for FLUSH_INPUT_PIPE() */
# define FLUSH_INPUT_PIPE(fd) do {} while(0)
#endif
/* Defaults, for Posix systems. */
#ifndef SET_BINARY
# define SET_BINARY(f) do {} while(0)
#endif
#ifndef FOPEN_RB
# define FOPEN_RB "r"
#endif
#ifndef FOPEN_WB
# define FOPEN_WB "w"
#endif
#ifndef FOPEN_RWB
# define FOPEN_RWB "w+"
#endif
#ifndef POPEN_RT
# define POPEN_RT "r"
#endif
#ifndef POPEN_WT
# define POPEN_WT "w"
#endif
#ifndef O_BINARY
# define O_BINARY 0
#endif
#ifndef BSHELL
# define BSHELL "/bin/sh"
#endif
#ifndef BSHELL_DASH_C
# define BSHELL_DASH_C "-c"
#endif
#ifndef IS_BSHELL
# define IS_BSHELL(s) ((s) && strcmp(s,BSHELL) == 0)
#endif
#ifndef PATH_SEP
# define PATH_SEP ":"
# define PATH_SEP_CHAR ':'
#endif
#ifndef DIR_SEPS
# define DIR_SEPS "/"
#endif
#ifndef IS_ABSOLUTE
# define IS_ABSOLUTE(f) ((f)[0] == '/')
#endif
#ifndef EXE_EXT
# define EXE_EXT ""
#endif
#ifndef PATH_EXT
# define PATH_EXT ""
#endif
#ifndef NULL_DEV
# define NULL_DEV "/dev/null"
#endif
#ifndef GS_NAME
# define GS_NAME "gs"
#endif
#ifndef WAIT
# define WAIT(s,p,m) wait(s)
#endif
#ifndef _WAIT_CHILD
# define _WAIT_CHILD 0
#endif
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