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/* system.h: system-dependent declarations; include this first.
Copyright 1997-2026 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 <https://www.gnu.org/licenses/>. */
#ifndef TEXINFO_SYSTEM_H
#define TEXINFO_SYSTEM_H
#define _GNU_SOURCE
#include <config.h>
#include <stdlib.h>
/* Use POSIX headers. If they are not available, we use the substitute
provided by gnulib. */
#include <unistd.h>
#include <fcntl.h>
/* For gettext (NLS). */
#include "gettext.h"
#define _(String) gettext (String)
#define N_(String) (String)
/* 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 __CYGWIN__
# define PATH_SEP ":"
# define STRIP_DOT_EXE 0
# define NULL_DEVICE "/dev/null"
# define PIPE_USE_FORK 1
# else /* O_BINARY && !__CYGWIN__ */
# define PATH_SEP ";"
# define STRIP_DOT_EXE 1
# define NULL_DEVICE "NUL"
# 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 HAS_SLASH(s) (strchr ((s), '/') || strchr ((s), '\\'))
# define IS_ABSOLUTE(n) (IS_SLASH((n)[0]) || HAVE_DRIVE(n))
#else /* not O_BINARY, i.e., Unix */
# define FOPEN_RBIN "r"
# define FOPEN_WBIN "w"
# define IS_SLASH(c) ((c) == '/')
# define HAS_SLASH(s) (strchr ((s), '/'))
# define HAVE_DRIVE(n) (0)
# define IS_ABSOLUTE(n) ((n)[0] == '/')
# define FILENAME_CMP strcmp
# define FILENAME_CMPN strncmp
# define PATH_SEP ":"
# define STRIP_DOT_EXE 0
# define NULL_DEVICE "/dev/null"
# define PIPE_USE_FORK 1
#endif /* not O_BINARY */
#endif /* TEXINFO_SYSTEM_H */
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