comparison kdiff3/src/gnudiff_system.h @ 52:ba22ec30aa4e

GNU-Diff-Algorithms: Adapted for KDiff3-0.9.80

+/* System dependent declarations.
+
+   Modified for KDiff3 by Joachim Eibl 2003.
+
+   Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1998, 2001, 2002
+   Free Software Foundation, Inc.
+
+   This file is part of GNU DIFF.
+
+   GNU DIFF 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.
+
+   GNU DIFF 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; see the file COPYING.
+   If not, write to the Free Software Foundation,
+   59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+
+//#include <config.h>
+
+/* Don't bother to support K&R C compilers any more; it's not worth
+   the trouble.  These macros prevent some library modules from being
+   compiled in K&R C mode.  */
+#define PARAMS(Args) Args
+#define PROTOTYPES 1
+
+/* Define `__attribute__' and `volatile' first
+   so that they're used consistently in all system includes.  */
+#if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 6) || __STRICT_ANSI__
+# define __attribute__(x)
+#endif
+#if defined const && !defined volatile
+# define volatile
+#endif
+
+/* Verify a requirement at compile-time (unlike assert, which is runtime).  */
+#define verify(name, assertion) struct name { char a[(assertion) ? 1 : -1]; }
+
+
+/* Determine whether an integer type is signed, and its bounds.
+   This code assumes two's (or one's!) complement with no holes.  */
+
+/* The extra casts work around common compiler bugs,
+   e.g. Cray C 5.0.3.0 when t == time_t.  */
+#ifndef TYPE_SIGNED
+# define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
+#endif
+#ifndef TYPE_MINIMUM
+# define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \
+			       ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) \
+			       : (t) 0))
+#endif
+#ifndef TYPE_MAXIMUM
+# define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t)))
+#endif
+
+#include <sys/types.h>
+#include <sys/stat.h>
+
+
+# include <stdlib.h>
+#ifndef EXIT_SUCCESS
+# define EXIT_SUCCESS 0
+#endif
+#if !EXIT_FAILURE
+# undef EXIT_FAILURE /* Sony NEWS-OS 4.0C defines EXIT_FAILURE to 0.  */
+# define EXIT_FAILURE 1
+#endif
+#define EXIT_TROUBLE 2
+
+#include <limits.h>
+#ifndef SSIZE_MAX
+# define SSIZE_MAX TYPE_MAXIMUM (ssize_t)
+#endif
+
+#ifndef PTRDIFF_MAX
+# define PTRDIFF_MAX TYPE_MAXIMUM (ptrdiff_t)
+#endif
+#ifndef SIZE_MAX
+# define SIZE_MAX TYPE_MAXIMUM (size_t)
+#endif
+#ifndef UINTMAX_MAX
+# define UINTMAX_MAX TYPE_MAXIMUM (uintmax_t)
+#endif
+
+#include <stddef.h>
+#include <string.h>
+#include <ctype.h>
+
+/* CTYPE_DOMAIN (C) is nonzero if the unsigned char C can safely be given
+   as an argument to <ctype.h> macros like `isspace'.  */
+# define CTYPE_DOMAIN(c) 1
+#define ISPRINT(c) (CTYPE_DOMAIN (c) && isprint (c))
+#define ISSPACE(c) (CTYPE_DOMAIN (c) && isspace (c))
+
+# define TOLOWER(c) tolower (c)
+
+/* ISDIGIT differs from isdigit, as follows:
+   - Its arg may be any int or unsigned int; it need not be an unsigned char.
+   - It's guaranteed to evaluate its argument exactly once.
+   - It's typically faster.
+   POSIX 1003.1-2001 says that only '0' through '9' are digits.
+   Prefer ISDIGIT to isdigit unless it's important to use the locale's
+   definition of `digit' even when the host does not conform to POSIX.  */
+#define ISDIGIT(c) ((unsigned int) (c) - '0' <= 9)
+
+#undef MIN
+#undef MAX
+#define MIN(a, b) ((a) <= (b) ? (a) : (b))
+#define MAX(a, b) ((a) >= (b) ? (a) : (b))
+
+
+
+/* Type used for fast comparison of several bytes at a time.  */
+
+#ifndef word
+# define word unsigned int
+#endif
+
+/* The integer type of a line number.  Since files are read into main
+   memory, ptrdiff_t should be wide enough.  */
+
+typedef ptrdiff_t lin;
+#define LIN_MAX PTRDIFF_MAX
+verify (lin_is_signed, TYPE_SIGNED (lin));
+verify (lin_is_wide_enough, sizeof (ptrdiff_t) <= sizeof (lin));
+verify (lin_is_printable_as_long, sizeof (lin) <= sizeof (long));