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63 lines
2.1 KiB
C
63 lines
2.1 KiB
C
/* Binary mode I/O.
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Copyright (C) 2001, 2003, 2005, 2008 Free Software Foundation, Inc.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef _BINARY_H
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#define _BINARY_H
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/* Include this header after <fcntl.h> and <stdio.h>, because
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systems that distinguish between text and binary I/O usually
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define O_BINARY in <fcntl.h>, and the MSVC7 <stdio.h> doesn't
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like to be included after '#define fileno ...'
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We don't include <fcntl.h> here because not all systems have
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that header. */
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#if !defined O_BINARY && defined _O_BINARY
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/* For MSC-compatible compilers. */
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# define O_BINARY _O_BINARY
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# define O_TEXT _O_TEXT
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#endif
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#ifdef __BEOS__
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/* BeOS 5 has O_BINARY and O_TEXT, but they have no effect. */
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# undef O_BINARY
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# undef O_TEXT
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#endif
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#if O_BINARY
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# if defined __EMX__ || defined __DJGPP__ || defined __CYGWIN__
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# include <io.h> /* declares setmode() */
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# else
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# define setmode _setmode
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# undef fileno
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# define fileno _fileno
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# endif
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# ifdef __DJGPP__
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# include <unistd.h> /* declares isatty() */
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# /* Avoid putting stdin/stdout in binary mode if it is connected to the
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# console, because that would make it impossible for the user to
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# interrupt the program through Ctrl-C or Ctrl-Break. */
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# define SET_BINARY(fd) (!isatty (fd) ? (setmode (fd, O_BINARY), 0) : 0)
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# else
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# define SET_BINARY(fd) setmode (fd, O_BINARY)
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# endif
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#else
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/* On reasonable systems, binary I/O is the default. */
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# undef O_BINARY
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# define O_BINARY 0
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# define SET_BINARY(fd) /* nothing */
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#endif
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#endif /* _BINARY_H */
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