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/* system.h: system-dependent declarations; include this first.
$Id: system.h 5191 2013-02-23 00:11:18Z karl $
Copyright 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
2006, 2007, 2008, 2009, 2010, 2011
Free Software Foundation, Inc.
This program 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.
This program 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/>. */
#ifndef TEXINFO_SYSTEM_H
#define TEXINFO_SYSTEM_H
#define _GNU_SOURCE
#include <config.h>
#ifdef MIKTEX
#include <gnu-miktex.h>
#define S_ISDIR(x) ((x)&_S_IFDIR)
#endif
/* Assume ANSI C89 headers are available. */
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdarg.h>
/* Use POSIX headers. If they are not available, we use the substitute
provided by gnulib. */
#include <getopt.h>
#include <unistd.h>
/* For gettext (NLS). */
#include "gettext.h"
#define _(String) gettext (String)
#define N_(String) (String)
/* Additional gnulib includes. */
#include "mbchar.h"
#if HAVE_MBRTOWC
#include "mbiter.h"
#endif
#include "mbswidth.h"
#include "xalloc.h"
#include <errno.h>
#ifndef errno
extern int errno;
#endif
#ifdef VMS
#include <perror.h>
#endif
#ifndef HAVE_DECL_STRERROR
extern char *strerror ();
#endif
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
#ifndef PATH_MAX
#ifndef _POSIX_PATH_MAX
# define _POSIX_PATH_MAX 255
#endif
#define PATH_MAX _POSIX_PATH_MAX
#endif
#ifndef HAVE_DECL_STRCOLL
extern int strcoll ();
#endif
#include <sys/stat.h>
#if STAT_MACROS_BROKEN
# undef S_ISDIR
#endif
#if !defined(S_ISDIR) && defined(S_IFDIR)
# define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
#endif
#ifdef HAVE_SYS_FILE_H
#include <sys/file.h>
#endif /* HAVE_SYS_FILE_H */
#ifndef O_RDONLY
/* Since <fcntl.h> is POSIX, prefer that to <sys/fcntl.h>.
This also avoids some useless warnings on (at least) Linux. */
#ifdef HAVE_FCNTL_H
#include <fcntl.h>
#else /* not HAVE_FCNTL_H */
#ifdef HAVE_SYS_FCNTL_H
#include <sys/fcntl.h>
#endif /* not HAVE_SYS_FCNTL_H */
#endif /* not HAVE_FCNTL_H */
#endif /* not O_RDONLY */
/* MS-DOS and similar non-Posix systems have some peculiarities:
- they distinguish between binary and text files;
- they use both `/' and `\\' as directory separator in file names;
- they can have a drive letter X: prepended to a file name;
- they have a separate root directory on each drive;
- their filesystems are case-insensitive;
- directories in environment variables (like INFOPATH) are separated
by `;' rather than `:';
- text files can have their lines ended either with \n or with \r\n pairs;
These are all parameterized here except the last, which is
handled by the source code as appropriate (mostly, in info/). */
#ifndef O_BINARY
# ifdef _O_BINARY
# define O_BINARY _O_BINARY
# else
# define O_BINARY 0
# endif
#endif /* O_BINARY */
#if O_BINARY
# ifdef HAVE_IO_H
# include <io.h>
# endif
# ifdef __MSDOS__
# include <limits.h>
# ifdef __DJGPP__
# define HAVE_LONG_FILENAMES(dir) (pathconf (dir, _PC_NAME_MAX) > 12)
# define NULL_DEVICE "/dev/null"
# define DEFAULT_INFOPATH "c:/djgpp/info;/usr/local/info;/usr/info;."
/* DJGPP supports /dev/null, which is okay for Unix aficionados,
shell scripts and Makefiles, but interactive DOS die-hards
would probably want to have NUL as well. */
# define ALSO_NULL_DEVICE "NUL"
# else /* O_BINARY && !__DJGPP__ */
# define HAVE_LONG_FILENAMES(dir) (0)
# define NULL_DEVICE "NUL"
# endif /* O_BINARY && !__DJGPP__ */
# define SET_SCREEN_SIZE_HELPER terminal_prep_terminal()
# define DEFAULT_INFO_PRINT_COMMAND ">PRN"
# else /* O_BINARY && !__MSDOS__ */
# define setmode(f,m) _setmode(f,m)
# define HAVE_LONG_FILENAMES(dir) (1)
# define NULL_DEVICE "NUL"
# endif /* O_BINARY && !__MSDOS__ */
# ifdef __CYGWIN__
# define DEFAULT_TMPDIR "/tmp/"
# define PATH_SEP ":"
# define STRIP_DOT_EXE 0
# undef NULL_DEVICE
# define NULL_DEVICE "/dev/null"
# define PIPE_USE_FORK 1
# else /* O_BINARY && !__CYGWIN__ */
# ifdef __MINGW32__
# define SET_SCREEN_SIZE_HELPER terminal_prep_terminal()
# endif /* _WIN32 */
# define DEFAULT_TMPDIR "c:/"
# define PATH_SEP ";"
# define STRIP_DOT_EXE 1
# define PIPE_USE_FORK 0
# endif /* O_BINARY && !__CYGWIN__ */
/* Back to any O_BINARY system. */
# define FILENAME_CMP mbscasecmp
# define FILENAME_CMPN mbsncasecmp
# define FOPEN_RBIN "rb"
# define FOPEN_WBIN "wb"
# define HAVE_DRIVE(n) ((n)[0] && (n)[1] == ':')
# define IS_SLASH(c) ((c) == '/' || (c) == '\\')
# define IS_ABSOLUTE(n) (IS_SLASH((n)[0]) || HAVE_DRIVE(n))
# define SET_BINARY(f) do {if (!isatty(f)) setmode(f,O_BINARY);} while(0)
#else /* not O_BINARY, i.e., Unix */
# define SET_BINARY(f) (void)0
# define FOPEN_RBIN "r"
# define FOPEN_WBIN "w"
# define IS_SLASH(c) ((c) == '/')
# define HAVE_DRIVE(n) (0)
# define IS_ABSOLUTE(n) ((n)[0] == '/')
# define FILENAME_CMP strcmp
# define FILENAME_CMPN strncmp
# define HAVE_LONG_FILENAMES(dir) (1)
# define PATH_SEP ":"
# define STRIP_DOT_EXE 0
# ifdef VMS
# define DEFAULT_TMPDIR "sys$scratch:"
# else
# define DEFAULT_TMPDIR "/tmp/"
# endif
# define NULL_DEVICE "/dev/null"
# define PIPE_USE_FORK 1
#endif /* not O_BINARY */
/* Everything but DJGPP. */
#ifndef ALSO_NULL_DEVICE
# define ALSO_NULL_DEVICE ""
#endif
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
/* Some systems don't declare this function in pwd.h. */
struct passwd *getpwnam (const char *name);
/* Our library routines not included in any system library. */
extern void xexit (int);
/* For convenience. */
#define STREQ(s1,s2) (strcmp (s1, s2) == 0)
#define STRCASEEQ(s1,s2) (strcasecmp (s1, s2) == 0)
#define STRNCASEEQ(s1,s2,n) (strncasecmp (s1, s2, n) == 0)
/* We don't need anything fancy. If we did need something fancy, gnulib
has it. */
#ifdef MIN
#undef MIN
#endif
#define MIN(a,b) ((a) < (b) ? (a) : (b))
#ifdef MAX
#undef MAX
#endif
#define MAX(a,b) ((a) > (b) ? (a) : (b))
#ifndef TEXINFO_PRINTFLIKE
# ifdef __GNUC__
# define TEXINFO_PRINTFLIKE(fmt,narg) __attribute__ ((__format__ (__printf__, fmt, narg)))
# else
# define TEXINFO_PRINTFLIKE(fmt,narg)
# endif
#endif
#endif /* TEXINFO_SYSTEM_H */
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