[dragonfly.git] / contrib / groff / src / include / nonposix.h

/* 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
Commit	Line	Data
4d3e9548	1	/* Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2009
465b256c	2	Free Software Foundation, Inc.
92d0a6a6 JR	3	Written by Eli Zaretskii (eliz@is.elta.co.il)
	4
	5	This file is part of groff.
	6
	7	groff is free software; you can redistribute it and/or modify it under
	8	the terms of the GNU General Public License as published by the Free
4d3e9548 JL	9	Software Foundation, either version 3 of the License, or
4d3e9548 JL	10	(at your option) any later version.
92d0a6a6 JR	11
	12	groff is distributed in the hope that it will be useful, but WITHOUT ANY
	13	WARRANTY; without even the implied warranty of MERCHANTABILITY or
	14	FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
	15	for more details.
	16
4d3e9548 JL	17	You should have received a copy of the GNU General Public License
4d3e9548 JL	18	along with this program. If not, see <http://www.gnu.org/licenses/>. */
92d0a6a6 JR	19
	20	/* This header file compartmentalize all idiosyncrasies of non-Posix
	21	systems, such as MS-DOS, MS-Windows, etc. It should be loaded after
	22	the system headers like stdio.h to protect against warnings and error
	23	messages w.r.t. redefining macros. */
	24
	25	#if defined _MSC_VER
	26	# ifndef _WIN32
	27	# define _WIN32
	28	# endif
	29	#endif
	30
	31	#if defined(__MSDOS__) \|\| defined(__EMX__) \
	32	\|\| (defined(_WIN32) && !defined(_UWIN) && !defined(__CYGWIN__))
	33
	34	/* Binary I/O nuisances. */
	35	# include <fcntl.h>
	36	# include <io.h>
	37	# ifdef HAVE_UNISTD_H
	38	# include <unistd.h>
	39	# endif
	40	# ifndef STDIN_FILENO
	41	# define STDIN_FILENO 0
	42	# define STDOUT_FILENO 1
	43	# define STDERR_FILENO 2
	44	# endif
	45	# ifdef HAVE_DIRECT_H
	46	# include <direct.h>
	47	# endif
	48	# ifdef HAVE_PROCESS_H
	49	# include <process.h>
	50	# endif
	51	# if defined(_MSC_VER) \|\| defined(__MINGW32__)
	52	# define POPEN_RT "rt"
	53	# define POPEN_WT "wt"
	54	# define popen(c,m) _popen(c,m)
	55	# define pclose(p) _pclose(p)
	56	# define pipe(pfd) _pipe((pfd),0,_O_BINARY\|_O_NOINHERIT)
	57	# define mkdir(p,m) _mkdir(p)
	58	# define setmode(f,m) _setmode(f,m)
	59	# define WAIT(s,p,m) _cwait(s,p,m)
	60	# define creat(p,m) _creat(p,m)
	61	# define read(f,b,s) _read(f,b,s)
	62	# define write(f,b,s) _write(f,b,s)
	63	# define dup(f) _dup(f)
	64	# define dup2(f1,f2) _dup2(f1,f2)
	65	# define close(f) _close(f)
	66	# define isatty(f) _isatty(f)
465b256c	67	# define access(p,m) _access(p,m)
92d0a6a6 JR	68	# endif
	69	# define SET_BINARY(f) do {if (!isatty(f)) setmode(f,O_BINARY);} while(0)
	70	# define FOPEN_RB "rb"
	71	# define FOPEN_WB "wb"
	72	# define FOPEN_RWB "wb+"
	73	# ifndef O_BINARY
	74	# ifdef _O_BINARY
	75	# define O_BINARY (_O_BINARY)
	76	# endif
	77	# endif
	78
	79	/* The system shell. Groff assumes a Unixy shell, but non-Posix
	80	systems don't have standard places where it lives, and might not
	81	have it installed to begin with. We want to give them some leeway. */
	82	# ifdef __EMX__
	83	# define getcwd(b,s) _getcwd2(b,s)
	84	# else
	85	# define BSHELL (system_shell_name())
	86	# define BSHELL_DASH_C (system_shell_dash_c())
	87	# define IS_BSHELL(s) (is_system_shell(s))
	88	# endif
	89
	90	/* The separator for directories in PATH and other environment
	91	variables. */
	92	# define PATH_SEP ";"
	93	# define PATH_SEP_CHAR ';'
	94
	95	/* Characters that separate directories in a path name. */
	96	# define DIR_SEPS "/\\:"
	97
	98	/* How to tell if the argument is an absolute file name. */
	99	# define IS_ABSOLUTE(f) \
	100	((f)[0] == '/' \|\| (f)[0] == '\\' \|\| (f)[0] && (f)[1] == ':')
	101
	102	/* The executable extension. */
	103	# define EXE_EXT ".exe"
	104
465b256c JR	105	/* Possible executable extensions. */
	106	# define PATH_EXT ".com;.exe;.bat;.cmd"
	107
92d0a6a6 JR	108	/* The system null device. */
	109	# define NULL_DEV "NUL"
	110
	111	/* The default place to create temporary files. */
	112	# ifndef P_tmpdir
	113	# ifdef _P_tmpdir
	114	# define P_tmpdir _P_tmpdir
	115	# else
	116	# define P_tmpdir "c:/temp"
	117	# endif
	118	# endif
	119
	120	/* Prototypes. */
	121	# ifdef __cplusplus
	122	extern "C" {
	123	# endif
	124	char * system_shell_name(void);
	125	const char * system_shell_dash_c(void);
	126	int is_system_shell(const char *);
	127	# ifdef __cplusplus
	128	}
	129	# endif
	130
	131	#endif
	132
	133	#if defined(_WIN32) && !defined(_UWIN) && !defined(__CYGWIN__)
	134	/* Win32 implementations which use the Microsoft runtime library
	135	* are prone to hanging when a pipe reader quits with unread data in the pipe.
	136	* `gtroff' avoids this, by invoking `FLUSH_INPUT_PIPE()', defined as ... */
	137	# define FLUSH_INPUT_PIPE(fd) \
	138	do if (!isatty(fd)) \
	139	{ \
	140	char drain[BUFSIZ]; \
	141	while (read(fd, drain, sizeof(drain)) > 0) \
	142	; \
	143	} while (0)
	144
	145	/* The Microsoft runtime library also has a broken argument passing mechanism,
	146	* which may result in improper grouping of arguments passed to a child process
	147	* by the `spawn()' family of functions. In `groff', only the `spawnvp()'
	148	* function is affected; we work around this defect, by substituting a
	149	* wrapper function in place of `spawnvp()' calls. */
	150
	151	# ifdef __cplusplus
	152	extern "C" {
	153	# endif
	154	int spawnvp_wrapper(int, char , char *);
	155	# ifdef __cplusplus
	156	}
	157	# endif
	158	# ifndef SPAWN_FUNCTION_WRAPPERS
	159	# undef spawnvp
	160	# define spawnvp spawnvp_wrapper
	161	# undef _spawnvp
	162	# define _spawnvp spawnvp
	163	# endif /* SPAWN_FUNCTION_WRAPPERS */
	164
	165	#else
	166	/* Other implementations do not suffer from Microsoft runtime bugs,
	167	* but `gtroff' requires a dummy definition for FLUSH_INPUT_PIPE() */
	168	# define FLUSH_INPUT_PIPE(fd) do {} while(0)
	169	#endif
	170
	171	/* Defaults, for Posix systems. */
172
173	#ifndef SET_BINARY
174	# define SET_BINARY(f) do {} while(0)
175	#endif
176	#ifndef FOPEN_RB
177	# define FOPEN_RB "r"
178	#endif
179	#ifndef FOPEN_WB
180	# define FOPEN_WB "w"
181	#endif
182	#ifndef FOPEN_RWB
183	# define FOPEN_RWB "w+"
184	#endif
185	#ifndef POPEN_RT
186	# define POPEN_RT "r"
187	#endif
188	#ifndef POPEN_WT
189	# define POPEN_WT "w"
190	#endif
191	#ifndef O_BINARY
192	# define O_BINARY 0
193	#endif
194	#ifndef BSHELL
195	# define BSHELL "/bin/sh"
196	#endif
197	#ifndef BSHELL_DASH_C
198	# define BSHELL_DASH_C "-c"
199	#endif
200	#ifndef IS_BSHELL
201	# define IS_BSHELL(s) ((s) && strcmp(s,BSHELL) == 0)
202	#endif
203	#ifndef PATH_SEP
204	# define PATH_SEP ":"
205	# define PATH_SEP_CHAR ':'
206	#endif
207	#ifndef DIR_SEPS
208	# define DIR_SEPS "/"
209	#endif
210	#ifndef IS_ABSOLUTE
211	# define IS_ABSOLUTE(f) ((f)[0] == '/')
212	#endif
213	#ifndef EXE_EXT
214	# define EXE_EXT ""
215	#endif
465b256c JR	216	#ifndef PATH_EXT
	217	# define PATH_EXT ""
	218	#endif
92d0a6a6 JR	219	#ifndef NULL_DEV
	220	# define NULL_DEV "/dev/null"
	221	#endif
	222	#ifndef GS_NAME
	223	# define GS_NAME "gs"
	224	#endif
	225	#ifndef WAIT
	226	# define WAIT(s,p,m) wait(s)
	227	#endif
	228	#ifndef _WAIT_CHILD
	229	# define _WAIT_CHILD 0
	230	#endif