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/* system.h: system-dependent declarations; include this first.
$Id: system.h,v 1.12 2004/04/26 13:56:57 karl Exp $
Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004 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 2, 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, write to the Free Software Foundation,
Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#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)
#else
/* MiKTeX defines substring() in a separate DLL, where it has its
own __declspec declaration. We don't want to try to duplicate
this Microsoft-ism here. */
extern char *substring (const char *, const char *);
#endif
/* We follow the order of header inclusion from Autoconf's
ac_includes_default, more or less. */
#include <stdio.h>
#include <sys/types.h>
#include <ctype.h>
/* All systems nowadays probably have these functions, but ... */
#ifdef HAVE_LOCALE_H
#include <locale.h>
#endif
#ifndef HAVE_SETLOCALE
#define setlocale(category,locale) /* empty */
#endif
/* For gettext (NLS). */
#define const
#include "gettext.h"
#undef const
#define _(String) gettext (String)
#define N_(String) (String)
#ifdef STDC_HEADERS
#define getopt system_getopt
#include <stdlib.h>
#undef getopt
#else
extern char *getenv ();
#endif
/* Don't use bcopy! Use memmove if source and destination may overlap,
memcpy otherwise. */
#if HAVE_STRING_H
# if !STDC_HEADERS && HAVE_MEMORY_H
# include <memory.h>
# endif
# include <string.h>
#endif
#if HAVE_STRINGS_H
/* Always include <strings.h> if we have it. This is because that's
what Autoconf's AC_CHECK_DECL does. On IBM AIX 4.2, strncasecmp is
only declared in strings.h. */
# include <strings.h>
#endif
#if !HAVE_STRNCASECMP || !HAVE_STRCASECMP
# include "strcase.h"
#endif
#if !HAVE_DECL_MEMCHR
char *memchr ();
#endif
/* <unistd.h> defines _POSIX_VERSION, but Paul Eggert points out that is
only supposed to be used in user code, not other system headers. */
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif /* HAVE_UNISTD_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_STRCASECMP
extern int strcasecmp ();
#endif
#ifndef HAVE_DECL_STRNCASECMP
extern int strncasecmp ();
#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 */
/* We'd like to take advantage of _doprnt if it's around, a la error.c,
but then we'd have no VA_SPRINTF. */
#if HAVE_VPRINTF
# if __STDC__
# include <stdarg.h>
# define VA_START(args, lastarg) va_start(args, lastarg)
# else
# include <varargs.h>
# define VA_START(args, lastarg) va_start(args)
# endif
# define VA_FPRINTF(file, fmt, ap) vfprintf (file, fmt, ap)
# define VA_SPRINTF(str, fmt, ap) vsprintf (str, fmt, ap)
#else /* not HAVE_VPRINTF */
# define VA_START(args, lastarg)
# define va_alist a1, a2, a3, a4, a5, a6, a7, a8
# define va_dcl char *a1, *a2, *a3, *a4, *a5, *a6, *a7, *a8;
# define va_end(args)
#endif
#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 ":"
# else /* O_BINARY && !__CYGWIN__ */
# define DEFAULT_TMPDIR "c:/"
# define PATH_SEP ";"
# endif /* O_BINARY && !__CYGWIN__ */
/* Back to any O_BINARY system. */
# define FILENAME_CMP strcasecmp
# define FILENAME_CMPN strncasecmp
# 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]) || ((n)[0] && (n)[1] == ':'))
# define PIPE_USE_FORK 0
# define SET_BINARY(f) do {if (!isatty(f)) setmode(f,O_BINARY);} while(0)
# define STRIP_DOT_EXE 1
#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 *xmalloc (size_t), *xrealloc (void *, size_t);
extern char *xstrdup (const char *);
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))
#endif /* TEXINFO_SYSTEM_H */
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