diffutils-3.5HEADdiffutils-3.5master

1 files changed, 214 insertions, 0 deletions

diff --git a/src/system.h b/src/system.h
new file mode 100644
index 0000000..be1c0bd
--- /dev/null
+++ b/src/system.h
@@ -0,0 +1,214 @@
+/* System dependent declarations.
+
+   Copyright (C) 1988-1989, 1992-1995, 1998, 2001-2002, 2004, 2006, 2009-2013,
+   2015-2016 Free Software Foundation, Inc.
+
+   This file is part of GNU DIFF.
+
+   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 <http://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Use this to suppress gcc's "...may be used before initialized" warnings. */
+#ifdef lint
+# define IF_LINT(Code) Code
+#else
+# define IF_LINT(Code) /* empty */
+#endif
+
+/* 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
+
+#include <verify.h>
+
+#include <sys/types.h>
+
+#include <sys/stat.h>
+#include "stat-macros.h"
+
+#ifndef STAT_BLOCKSIZE
+# if HAVE_STRUCT_STAT_ST_BLKSIZE
+#  define STAT_BLOCKSIZE(s) ((s).st_blksize)
+# else
+#  define STAT_BLOCKSIZE(s) (8 * 1024)
+# endif
+#endif
+
+#include <unistd.h>
+
+#include <fcntl.h>
+#include <time.h>
+
+#include <sys/wait.h>
+
+#include <dirent.h>
+#ifndef _D_EXACT_NAMLEN
+# define _D_EXACT_NAMLEN(dp) strlen ((dp)->d_name)
+#endif
+
+#include <stdlib.h>
+#define EXIT_TROUBLE 2
+
+#include <limits.h>
+#include <locale.h>
+#include <stddef.h>
+#include <inttypes.h>
+
+#include <string.h>
+#if ! HAVE_STRCASECOLL
+# if HAVE_STRICOLL || defined stricoll
+#  define strcasecoll(a, b) stricoll (a, b)
+# else
+#  define strcasecoll(a, b) strcasecmp (a, b) /* best we can do */
+# endif
+#endif
+#if ! (HAVE_STRCASECMP || defined strcasecmp)
+int strcasecmp (char const *, char const *);
+#endif
+
+#include <gettext.h>
+#if ! ENABLE_NLS
+# undef textdomain
+# define textdomain(Domainname) /* empty */
+# undef bindtextdomain
+# define bindtextdomain(Domainname, Dirname) /* empty */
+#endif
+
+#define _(msgid) gettext (msgid)
+#define N_(msgid) msgid
+
+#include <ctype.h>
+
+/* 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)
+
+#include <errno.h>
+
+#include <signal.h>
+#if !defined SIGCHLD && defined SIGCLD
+# define SIGCHLD SIGCLD
+#endif
+
+#undef MIN
+#undef MAX
+#define MIN(a, b) ((a) <= (b) ? (a) : (b))
+#define MAX(a, b) ((a) >= (b) ? (a) : (b))
+
+#include <stdbool.h>
+#include <intprops.h>
+#include "propername.h"
+#include "version.h"
+
+/* Type used for fast comparison of several bytes at a time.
+   This used to be uintmax_t, but changing it to size_t
+   made plain 'cmp' 90% faster (GCC 4.8.1, x86).  */
+
+#ifndef word
+# define word size_t
+#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 (TYPE_SIGNED (lin));
+verify (sizeof (ptrdiff_t) <= sizeof (lin));
+verify (sizeof (lin) <= sizeof (long int));
+
+/* Limit so that 2 * CONTEXT + 1 does not overflow.  */
+
+#define CONTEXT_MAX ((LIN_MAX - 1) / 2)
+
+
+/* This section contains POSIX-compliant defaults for macros
+   that are meant to be overridden by hand in config.h as needed.  */
+
+#ifndef file_name_cmp
+# define file_name_cmp strcmp
+#endif
+
+#ifndef initialize_main
+# define initialize_main(argcp, argvp)
+#endif
+
+#ifndef NULL_DEVICE
+# define NULL_DEVICE "/dev/null"
+#endif
+
+/* Do struct stat *S, *T describe the same special file?  */
+#ifndef same_special_file
+# if HAVE_STRUCT_STAT_ST_RDEV && defined S_ISBLK && defined S_ISCHR
+#  define same_special_file(s, t) \
+     (((S_ISBLK ((s)->st_mode) && S_ISBLK ((t)->st_mode)) \
+       || (S_ISCHR ((s)->st_mode) && S_ISCHR ((t)->st_mode))) \
+      && (s)->st_rdev == (t)->st_rdev)
+# else
+#  define same_special_file(s, t) 0
+# endif
+#endif
+
+/* Do struct stat *S, *T describe the same file?  Answer -1 if unknown.  */
+#ifndef same_file
+# define same_file(s, t) \
+    ((((s)->st_ino == (t)->st_ino) && ((s)->st_dev == (t)->st_dev)) \
+     || same_special_file (s, t))
+#endif
+
+/* Do struct stat *S, *T have the same file attributes?
+
+   POSIX says that two files are identical if st_ino and st_dev are
+   the same, but many file systems incorrectly assign the same (device,
+   inode) pair to two distinct files, including:
+
+   - GNU/Linux NFS servers that export all local file systems as a
+     single NFS file system, if a local device number (st_dev) exceeds
+     255, or if a local inode number (st_ino) exceeds 16777215.
+
+   - Network Appliance NFS servers in snapshot directories; see
+     Network Appliance bug #195.
+
+   - ClearCase MVFS; see bug id ATRia04618.
+
+   Check whether two files that purport to be the same have the same
+   attributes, to work around instances of this common bug.  Do not
+   inspect all attributes, only attributes useful in checking for this
+   bug.
+
+   It's possible for two distinct files on a buggy file system to have
+   the same attributes, but it's not worth slowing down all
+   implementations (or complicating the configuration) to cater to
+   these rare cases in buggy implementations.  */
+
+#ifndef same_file_attributes
+# define same_file_attributes(s, t) \
+   ((s)->st_mode == (t)->st_mode \
+    && (s)->st_nlink == (t)->st_nlink \
+    && (s)->st_uid == (t)->st_uid \
+    && (s)->st_gid == (t)->st_gid \
+    && (s)->st_size == (t)->st_size \
+    && (s)->st_mtime == (t)->st_mtime \
+    && (s)->st_ctime == (t)->st_ctime)
+#endif
+
+#define STREQ(a, b) (strcmp (a, b) == 0)