/* 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. */ /* 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 #include #include /* Note that PARAMS is just internal to the diff library; diffrun.h has its own mechanism, which will hopefully be less likely to conflict with the library's caller's namespace. */ #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 #ifndef S_ISSOCK # if defined( S_IFSOCK ) # ifdef S_IFMT # define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK) # else # define S_ISSOCK(mode) ((mode) & S_IFSOCK) # endif /* S_IFMT */ # elif defined( S_ISNAM ) /* SCO OpenServer 5.0.6a */ # define S_ISSOCK S_ISNAM # endif /* !S_IFSOCK && S_ISNAM */ #endif /* !S_ISSOCK */ #if HAVE_UNISTD_H #include #endif #ifdef HAVE_IO_H # include #endif #ifdef HAVE_FCNTL_H # include #else # include #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 #else #include #endif #if HAVE_FCNTL_H #include #else #if HAVE_SYS_FILE_H #include #endif #endif #ifndef O_RDONLY #define O_RDONLY 0 #endif #if HAVE_SYS_WAIT_H #include #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_STRUCT_STAT_ST_BLKSIZE #define STAT_BLOCKSIZE(s) (s).st_blksize #else #define STAT_BLOCKSIZE(s) (8 * 1024) #endif #endif #if HAVE_DIRENT_H # include # define NAMLEN(dirent) strlen((dirent)->d_name) #else # define dirent direct # define NAMLEN(dirent) ((dirent)->d_namlen) # if HAVE_SYS_NDIR_H # include # endif # if HAVE_SYS_DIR_H # include # endif # if HAVE_NDIR_H # include # endif #endif #if HAVE_VFORK_H #include #endif #if HAVE_STDLIB_H || defined(STDC_HEADERS) #include #else VOID *malloc (); VOID *realloc (); #endif #ifndef getenv char *getenv (); #endif #include #ifndef INT_MAX #define INT_MAX 2147483647 #endif #ifndef CHAR_BIT #define CHAR_BIT 8 #endif #if STDC_HEADERS || HAVE_STRING_H # include # 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_DOMAIN (C) is nonzero if the unsigned char C can safely be given as an argument to 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 #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 /* these come from CVS's lib/system.h, but I wasn't sure how to include that * properly or even if I really should */ #ifndef CVS_OPENDIR #define CVS_OPENDIR opendir #endif #ifndef CVS_READDIR #define CVS_READDIR readdir #endif #ifndef CVS_CLOSEDIR #define CVS_CLOSEDIR closedir #endif