57e58c3aa7
things fixed in here, including the '-ko' vs. -A problem with remote cvs which caused all files with -ko to be resent each time (which is damn painful over a modem, I can tell you). It also found a heap of stray empty directories that should have been pruned with the -P flag to cvs update but were not for some reason. It also has the fully integrated rcs and diff, so no more fork/exec overheads for rcs,ci,patch,diff,etc. This means that it parses the control data in the rcs files only once rather than twice or more. If the 'cvs diff' vs. Index thing is going to be fixed for future patch compatability, this is the place to do it.
271 lines
5.7 KiB
C
271 lines
5.7 KiB
C
/* System dependent declarations.
|
||
Copyright (C) 1988, 1989, 1992, 1993, 1994 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 GNU DIFF; see the file COPYING. If not, write to
|
||
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
|
||
|
||
/* We must define `volatile' and `const' first (the latter inside config.h),
|
||
so that they're used consistently in all system includes. */
|
||
#if !__STDC__
|
||
#ifndef volatile
|
||
#define volatile
|
||
#endif
|
||
#endif
|
||
#include <config.h>
|
||
|
||
#include <sys/types.h>
|
||
#include <sys/stat.h>
|
||
|
||
#if __STDC__
|
||
#define PARAMS(args) args
|
||
#define VOID void
|
||
#else
|
||
#define PARAMS(args) ()
|
||
#define VOID char
|
||
#endif
|
||
|
||
#if STAT_MACROS_BROKEN
|
||
#undef S_ISBLK
|
||
#undef S_ISCHR
|
||
#undef S_ISDIR
|
||
#undef S_ISFIFO
|
||
#undef S_ISREG
|
||
#undef S_ISSOCK
|
||
#endif
|
||
#ifndef S_ISDIR
|
||
#define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR)
|
||
#endif
|
||
#ifndef S_ISREG
|
||
#define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
|
||
#endif
|
||
#if !defined(S_ISBLK) && defined(S_IFBLK)
|
||
#define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK)
|
||
#endif
|
||
#if !defined(S_ISCHR) && defined(S_IFCHR)
|
||
#define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR)
|
||
#endif
|
||
#if !defined(S_ISFIFO) && defined(S_IFFIFO)
|
||
#define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFFIFO)
|
||
#endif
|
||
#if !defined(S_ISSOCK) && defined(S_IFSOCK)
|
||
#define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK)
|
||
#endif
|
||
|
||
#if HAVE_UNISTD_H
|
||
#include <unistd.h>
|
||
#endif
|
||
|
||
#ifndef SEEK_SET
|
||
#define SEEK_SET 0
|
||
#endif
|
||
#ifndef SEEK_CUR
|
||
#define SEEK_CUR 1
|
||
#endif
|
||
|
||
#ifndef STDIN_FILENO
|
||
#define STDIN_FILENO 0
|
||
#endif
|
||
#ifndef STDOUT_FILENO
|
||
#define STDOUT_FILENO 1
|
||
#endif
|
||
#ifndef STDERR_FILENO
|
||
#define STDERR_FILENO 2
|
||
#endif
|
||
|
||
/* I believe that all relevant systems have
|
||
time.h. It is in ANSI, for example. The
|
||
code below looks quite bogus as I don't think
|
||
sys/time.h is ever a substitute for time.h;
|
||
it is something different. */
|
||
#define HAVE_TIME_H 1
|
||
|
||
#if HAVE_TIME_H
|
||
#include <time.h>
|
||
#else
|
||
#include <sys/time.h>
|
||
#endif
|
||
|
||
#if HAVE_FCNTL_H
|
||
#include <fcntl.h>
|
||
#else
|
||
#if HAVE_SYS_FILE_H
|
||
#include <sys/file.h>
|
||
#endif
|
||
#endif
|
||
|
||
#ifndef O_RDONLY
|
||
#define O_RDONLY 0
|
||
#endif
|
||
|
||
#if HAVE_SYS_WAIT_H
|
||
#include <sys/wait.h>
|
||
#endif
|
||
#ifndef WEXITSTATUS
|
||
#define WEXITSTATUS(stat_val) ((unsigned) (stat_val) >> 8)
|
||
#endif
|
||
#ifndef WIFEXITED
|
||
#define WIFEXITED(stat_val) (((stat_val) & 255) == 0)
|
||
#endif
|
||
|
||
#ifndef STAT_BLOCKSIZE
|
||
#if HAVE_ST_BLKSIZE
|
||
#define STAT_BLOCKSIZE(s) (s).st_blksize
|
||
#else
|
||
#define STAT_BLOCKSIZE(s) (8 * 1024)
|
||
#endif
|
||
#endif
|
||
|
||
#if HAVE_DIRENT_H
|
||
# include <dirent.h>
|
||
# define NAMLEN(dirent) strlen((dirent)->d_name)
|
||
#else
|
||
# define dirent direct
|
||
# define NAMLEN(dirent) ((dirent)->d_namlen)
|
||
# if HAVE_SYS_NDIR_H
|
||
# include <sys/ndir.h>
|
||
# endif
|
||
# if HAVE_SYS_DIR_H
|
||
# include <sys/dir.h>
|
||
# endif
|
||
# if HAVE_NDIR_H
|
||
# include <ndir.h>
|
||
# endif
|
||
#endif
|
||
|
||
#if HAVE_VFORK_H
|
||
#include <vfork.h>
|
||
#endif
|
||
|
||
#if HAVE_STDLIB_H || defined(STDC_HEADERS)
|
||
#include <stdlib.h>
|
||
#else
|
||
VOID *malloc ();
|
||
VOID *realloc ();
|
||
#endif
|
||
#ifndef getenv
|
||
char *getenv ();
|
||
#endif
|
||
|
||
#if HAVE_LIMITS_H
|
||
#include <limits.h>
|
||
#endif
|
||
#ifndef INT_MAX
|
||
#define INT_MAX 2147483647
|
||
#endif
|
||
#ifndef CHAR_BIT
|
||
#define CHAR_BIT 8
|
||
#endif
|
||
|
||
#if STDC_HEADERS || HAVE_STRING_H
|
||
# include <string.h>
|
||
# ifndef bzero
|
||
# define bzero(s, n) memset (s, 0, n)
|
||
# endif
|
||
#else
|
||
# if !HAVE_STRCHR
|
||
# define strchr index
|
||
# define strrchr rindex
|
||
# endif
|
||
char *strchr (), *strrchr ();
|
||
# if !HAVE_MEMCHR
|
||
# define memcmp(s1, s2, n) bcmp (s1, s2, n)
|
||
# define memcpy(d, s, n) bcopy (s, d, n)
|
||
void *memchr ();
|
||
# endif
|
||
#endif
|
||
|
||
#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'. */
|
||
#if STDC_HEADERS
|
||
#define CTYPE_DOMAIN(c) 1
|
||
#else
|
||
#define CTYPE_DOMAIN(c) ((unsigned) (c) <= 0177)
|
||
#endif
|
||
#ifndef ISPRINT
|
||
#define ISPRINT(c) (CTYPE_DOMAIN (c) && isprint (c))
|
||
#endif
|
||
#ifndef ISSPACE
|
||
#define ISSPACE(c) (CTYPE_DOMAIN (c) && isspace (c))
|
||
#endif
|
||
#ifndef ISUPPER
|
||
#define ISUPPER(c) (CTYPE_DOMAIN (c) && isupper (c))
|
||
#endif
|
||
|
||
#ifndef ISDIGIT
|
||
#define ISDIGIT(c) ((unsigned) (c) - '0' <= 9)
|
||
#endif
|
||
|
||
#include <errno.h>
|
||
#if !STDC_HEADERS
|
||
extern int errno;
|
||
#endif
|
||
|
||
#ifdef min
|
||
#undef min
|
||
#endif
|
||
#ifdef max
|
||
#undef max
|
||
#endif
|
||
#define min(a,b) ((a) <= (b) ? (a) : (b))
|
||
#define max(a,b) ((a) >= (b) ? (a) : (b))
|
||
|
||
/* This section contains Posix-compliant defaults for macros
|
||
that are meant to be overridden by hand in config.h as needed. */
|
||
|
||
#ifndef filename_cmp
|
||
#define filename_cmp(a, b) strcmp (a, b)
|
||
#endif
|
||
|
||
#ifndef filename_lastdirchar
|
||
#define filename_lastdirchar(filename) strrchr (filename, '/')
|
||
#endif
|
||
|
||
#ifndef HAVE_FORK
|
||
#define HAVE_FORK 1
|
||
#endif
|
||
|
||
#ifndef HAVE_SETMODE
|
||
#define HAVE_SETMODE 0
|
||
#endif
|
||
|
||
#ifndef initialize_main
|
||
#define initialize_main(argcp, argvp)
|
||
#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)
|
||
#endif
|
||
|
||
/* Place into Q a quoted version of A suitable for `popen' or `system',
|
||
incrementing Q and junking A.
|
||
Do not increment Q by more than 4 * strlen (A) + 2. */
|
||
#ifndef SYSTEM_QUOTE_ARG
|
||
#define SYSTEM_QUOTE_ARG(q, a) \
|
||
{ \
|
||
*(q)++ = '\''; \
|
||
for (; *(a); *(q)++ = *(a)++) \
|
||
if (*(a) == '\'') \
|
||
{ \
|
||
*(q)++ = '\''; \
|
||
*(q)++ = '\\'; \
|
||
*(q)++ = '\''; \
|
||
} \
|
||
*(q)++ = '\''; \
|
||
}
|
||
#endif
|