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124 lines
3.7 KiB
124 lines
3.7 KiB
/* System dependent declarations.
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Modified for KDiff3 by Joachim Eibl 2003.
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The original file was part of GNU DIFF.
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Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1998, 2001, 2002
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Free Software Foundation, Inc.
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GNU DIFF 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 2, or (at your option)
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any later version.
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GNU DIFF 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; see the file COPYING.
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If not, write to the Free Software Foundation,
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51 Franklin Steet, Fifth Floor, Boston, MA 02110-1301, USA. */
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#ifndef GNUDIFF_SYSTEM_H
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#define GNUDIFF_SYSTEM_H
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//#include <config.h>
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/* Don't bother to support K&R C compilers any more; it's not worth
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the trouble. These macros prevent some library modules from being
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compiled in K&R C mode. */
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#define PARAMS(Args) Args
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#define PROTOTYPES 1
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/* Verify a requirement at compile-time (unlike assert, which is runtime). */
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#define verify(name, assertion) struct name { char a[(assertion) ? 1 : -1]; }
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/* Determine whether an integer type is signed, and its bounds.
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This code assumes two's (or one's!) complement with no holes. */
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/* The extra casts work around common compiler bugs,
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e.g. Cray C 5.0.3.0 when t == time_t. */
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#ifndef TYPE_SIGNED
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# define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
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#endif
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#ifndef TYPE_MINIMUM
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# define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \
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? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) \
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: (t) 0))
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#endif
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#ifndef TYPE_MAXIMUM
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# define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t)))
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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# include <stdlib.h>
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#ifndef EXIT_SUCCESS
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# define EXIT_SUCCESS 0
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#endif
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#if !EXIT_FAILURE
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# undef EXIT_FAILURE /* Sony NEWS-OS 4.0C defines EXIT_FAILURE to 0. */
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# define EXIT_FAILURE 1
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#endif
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#define EXIT_TROUBLE 2
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#include <limits.h>
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#ifndef SSIZE_MAX
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# define SSIZE_MAX TYPE_MAXIMUM (ssize_t)
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#endif
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#ifndef PTRDIFF_MAX
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# define PTRDIFF_MAX TYPE_MAXIMUM (ptrdiff_t)
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#endif
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#ifndef SIZE_MAX
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# define SIZE_MAX TYPE_MAXIMUM (size_t)
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#endif
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#ifndef UINTMAX_MAX
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# define UINTMAX_MAX TYPE_MAXIMUM (uintmax_t)
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#endif
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#include <stddef.h>
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#include <string.h>
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#include <ctype.h>
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/* CTYPE_DOMAIN (C) is nonzero if the unsigned char C can safely be given
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as an argument to <ctype.h> macros like `isspace'. */
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# define CTYPE_DOMAIN(c) 1
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#define ISPRINT(c) (CTYPE_DOMAIN (c) && isprint (c))
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#define ISSPACE(c) (CTYPE_DOMAIN (c) && isspace (c))
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# define TOLOWER(c) tolower (c)
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/* ISDIGIT differs from isdigit, as follows:
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- Its arg may be any int or unsigned int; it need not be an unsigned char.
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- It's guaranteed to evaluate its argument exactly once.
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- It's typically faster.
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POSIX 1003.1-2001 says that only '0' through '9' are digits.
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Prefer ISDIGIT to isdigit unless it's important to use the locale's
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definition of `digit' even when the host does not conform to POSIX. */
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#define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9)
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#undef MIN
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#undef MAX
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#define MIN(a, b) ((a) <= (b) ? (a) : (b))
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#define MAX(a, b) ((a) >= (b) ? (a) : (b))
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/* The integer type of a line number. Since files are read into main
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memory, ptrdiff_t should be wide enough. */
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typedef ptrdiff_t lin;
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#define LIN_MAX PTRDIFF_MAX
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verify (lin_is_signed, TYPE_SIGNED (lin));
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verify (lin_is_wide_enough, sizeof (ptrdiff_t) <= sizeof (lin));
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verify (lin_is_printable_as_long, sizeof (lin) <= sizeof (long));
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#endif
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