1*a7c91847Schristos /* System dependent declarations. 2*a7c91847Schristos Copyright (C) 1988, 1989, 1992, 1993, 1994 Free Software Foundation, Inc. 3*a7c91847Schristos 4*a7c91847Schristos This file is part of GNU DIFF. 5*a7c91847Schristos 6*a7c91847Schristos GNU DIFF is free software; you can redistribute it and/or modify 7*a7c91847Schristos it under the terms of the GNU General Public License as published by 8*a7c91847Schristos the Free Software Foundation; either version 2, or (at your option) 9*a7c91847Schristos any later version. 10*a7c91847Schristos 11*a7c91847Schristos GNU DIFF is distributed in the hope that it will be useful, 12*a7c91847Schristos but WITHOUT ANY WARRANTY; without even the implied warranty of 13*a7c91847Schristos MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14*a7c91847Schristos GNU General Public License for more details. 15*a7c91847Schristos 16*a7c91847Schristos */ 17*a7c91847Schristos 18*a7c91847Schristos /* We must define `volatile' and `const' first (the latter inside config.h), 19*a7c91847Schristos so that they're used consistently in all system includes. */ 20*a7c91847Schristos #if !__STDC__ 21*a7c91847Schristos #ifndef volatile 22*a7c91847Schristos #define volatile 23*a7c91847Schristos #endif 24*a7c91847Schristos #endif 25*a7c91847Schristos #include <config.h> 26*a7c91847Schristos 27*a7c91847Schristos #include <sys/types.h> 28*a7c91847Schristos #include <sys/stat.h> 29*a7c91847Schristos 30*a7c91847Schristos /* Note that PARAMS is just internal to the diff library; diffrun.h 31*a7c91847Schristos has its own mechanism, which will hopefully be less likely to 32*a7c91847Schristos conflict with the library's caller's namespace. */ 33*a7c91847Schristos #if __STDC__ 34*a7c91847Schristos #define PARAMS(args) args 35*a7c91847Schristos #define VOID void 36*a7c91847Schristos #else 37*a7c91847Schristos #define PARAMS(args) () 38*a7c91847Schristos #define VOID char 39*a7c91847Schristos #endif 40*a7c91847Schristos 41*a7c91847Schristos #if STAT_MACROS_BROKEN 42*a7c91847Schristos #undef S_ISBLK 43*a7c91847Schristos #undef S_ISCHR 44*a7c91847Schristos #undef S_ISDIR 45*a7c91847Schristos #undef S_ISFIFO 46*a7c91847Schristos #undef S_ISREG 47*a7c91847Schristos #undef S_ISSOCK 48*a7c91847Schristos #endif 49*a7c91847Schristos #ifndef S_ISDIR 50*a7c91847Schristos #define S_ISDIR(mode) (((mode) & S_IFMT) == S_IFDIR) 51*a7c91847Schristos #endif 52*a7c91847Schristos #ifndef S_ISREG 53*a7c91847Schristos #define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG) 54*a7c91847Schristos #endif 55*a7c91847Schristos #if !defined(S_ISBLK) && defined(S_IFBLK) 56*a7c91847Schristos #define S_ISBLK(mode) (((mode) & S_IFMT) == S_IFBLK) 57*a7c91847Schristos #endif 58*a7c91847Schristos #if !defined(S_ISCHR) && defined(S_IFCHR) 59*a7c91847Schristos #define S_ISCHR(mode) (((mode) & S_IFMT) == S_IFCHR) 60*a7c91847Schristos #endif 61*a7c91847Schristos #if !defined(S_ISFIFO) && defined(S_IFFIFO) 62*a7c91847Schristos #define S_ISFIFO(mode) (((mode) & S_IFMT) == S_IFFIFO) 63*a7c91847Schristos #endif 64*a7c91847Schristos 65*a7c91847Schristos #ifndef S_ISSOCK 66*a7c91847Schristos # if defined( S_IFSOCK ) 67*a7c91847Schristos # ifdef S_IFMT 68*a7c91847Schristos # define S_ISSOCK(mode) (((mode) & S_IFMT) == S_IFSOCK) 69*a7c91847Schristos # else 70*a7c91847Schristos # define S_ISSOCK(mode) ((mode) & S_IFSOCK) 71*a7c91847Schristos # endif /* S_IFMT */ 72*a7c91847Schristos # elif defined( S_ISNAM ) 73*a7c91847Schristos /* SCO OpenServer 5.0.6a */ 74*a7c91847Schristos # define S_ISSOCK S_ISNAM 75*a7c91847Schristos # endif /* !S_IFSOCK && S_ISNAM */ 76*a7c91847Schristos #endif /* !S_ISSOCK */ 77*a7c91847Schristos 78*a7c91847Schristos #if HAVE_UNISTD_H 79*a7c91847Schristos #include <unistd.h> 80*a7c91847Schristos #endif 81*a7c91847Schristos 82*a7c91847Schristos #ifdef HAVE_IO_H 83*a7c91847Schristos # include <io.h> 84*a7c91847Schristos #endif 85*a7c91847Schristos 86*a7c91847Schristos #ifdef HAVE_FCNTL_H 87*a7c91847Schristos # include <fcntl.h> 88*a7c91847Schristos #else 89*a7c91847Schristos # include <sys/file.h> 90*a7c91847Schristos #endif 91*a7c91847Schristos 92*a7c91847Schristos #ifndef SEEK_SET 93*a7c91847Schristos #define SEEK_SET 0 94*a7c91847Schristos #endif 95*a7c91847Schristos #ifndef SEEK_CUR 96*a7c91847Schristos #define SEEK_CUR 1 97*a7c91847Schristos #endif 98*a7c91847Schristos 99*a7c91847Schristos #ifndef STDIN_FILENO 100*a7c91847Schristos #define STDIN_FILENO 0 101*a7c91847Schristos #endif 102*a7c91847Schristos #ifndef STDOUT_FILENO 103*a7c91847Schristos #define STDOUT_FILENO 1 104*a7c91847Schristos #endif 105*a7c91847Schristos #ifndef STDERR_FILENO 106*a7c91847Schristos #define STDERR_FILENO 2 107*a7c91847Schristos #endif 108*a7c91847Schristos 109*a7c91847Schristos /* I believe that all relevant systems have 110*a7c91847Schristos time.h. It is in ANSI, for example. The 111*a7c91847Schristos code below looks quite bogus as I don't think 112*a7c91847Schristos sys/time.h is ever a substitute for time.h; 113*a7c91847Schristos it is something different. */ 114*a7c91847Schristos #define HAVE_TIME_H 1 115*a7c91847Schristos 116*a7c91847Schristos #if HAVE_TIME_H 117*a7c91847Schristos #include <time.h> 118*a7c91847Schristos #else 119*a7c91847Schristos #include <sys/time.h> 120*a7c91847Schristos #endif 121*a7c91847Schristos 122*a7c91847Schristos #if HAVE_FCNTL_H 123*a7c91847Schristos #include <fcntl.h> 124*a7c91847Schristos #else 125*a7c91847Schristos #if HAVE_SYS_FILE_H 126*a7c91847Schristos #include <sys/file.h> 127*a7c91847Schristos #endif 128*a7c91847Schristos #endif 129*a7c91847Schristos 130*a7c91847Schristos #ifndef O_RDONLY 131*a7c91847Schristos #define O_RDONLY 0 132*a7c91847Schristos #endif 133*a7c91847Schristos 134*a7c91847Schristos #if HAVE_SYS_WAIT_H 135*a7c91847Schristos #include <sys/wait.h> 136*a7c91847Schristos #endif 137*a7c91847Schristos #ifndef WEXITSTATUS 138*a7c91847Schristos #define WEXITSTATUS(stat_val) ((unsigned) (stat_val) >> 8) 139*a7c91847Schristos #endif 140*a7c91847Schristos #ifndef WIFEXITED 141*a7c91847Schristos #define WIFEXITED(stat_val) (((stat_val) & 255) == 0) 142*a7c91847Schristos #endif 143*a7c91847Schristos 144*a7c91847Schristos #ifndef STAT_BLOCKSIZE 145*a7c91847Schristos #if HAVE_STRUCT_STAT_ST_BLKSIZE 146*a7c91847Schristos #define STAT_BLOCKSIZE(s) (s).st_blksize 147*a7c91847Schristos #else 148*a7c91847Schristos #define STAT_BLOCKSIZE(s) (8 * 1024) 149*a7c91847Schristos #endif 150*a7c91847Schristos #endif 151*a7c91847Schristos 152*a7c91847Schristos #if HAVE_DIRENT_H 153*a7c91847Schristos # include <dirent.h> 154*a7c91847Schristos # define NAMLEN(dirent) strlen((dirent)->d_name) 155*a7c91847Schristos #else 156*a7c91847Schristos # define dirent direct 157*a7c91847Schristos # define NAMLEN(dirent) ((dirent)->d_namlen) 158*a7c91847Schristos # if HAVE_SYS_NDIR_H 159*a7c91847Schristos # include <sys/ndir.h> 160*a7c91847Schristos # endif 161*a7c91847Schristos # if HAVE_SYS_DIR_H 162*a7c91847Schristos # include <sys/dir.h> 163*a7c91847Schristos # endif 164*a7c91847Schristos # if HAVE_NDIR_H 165*a7c91847Schristos # include <ndir.h> 166*a7c91847Schristos # endif 167*a7c91847Schristos #endif 168*a7c91847Schristos 169*a7c91847Schristos #if HAVE_VFORK_H 170*a7c91847Schristos #include <vfork.h> 171*a7c91847Schristos #endif 172*a7c91847Schristos 173*a7c91847Schristos #if HAVE_STDLIB_H || defined(STDC_HEADERS) 174*a7c91847Schristos #include <stdlib.h> 175*a7c91847Schristos #else 176*a7c91847Schristos VOID *malloc (); 177*a7c91847Schristos VOID *realloc (); 178*a7c91847Schristos #endif 179*a7c91847Schristos #ifndef getenv 180*a7c91847Schristos char *getenv (); 181*a7c91847Schristos #endif 182*a7c91847Schristos 183*a7c91847Schristos #include <limits.h> 184*a7c91847Schristos #ifndef INT_MAX 185*a7c91847Schristos #define INT_MAX 2147483647 186*a7c91847Schristos #endif 187*a7c91847Schristos #ifndef CHAR_BIT 188*a7c91847Schristos #define CHAR_BIT 8 189*a7c91847Schristos #endif 190*a7c91847Schristos 191*a7c91847Schristos #if STDC_HEADERS || HAVE_STRING_H 192*a7c91847Schristos # include <string.h> 193*a7c91847Schristos # ifndef bzero 194*a7c91847Schristos # define bzero(s, n) memset (s, 0, n) 195*a7c91847Schristos # endif 196*a7c91847Schristos #else 197*a7c91847Schristos # if !HAVE_STRCHR 198*a7c91847Schristos # define strchr index 199*a7c91847Schristos # define strrchr rindex 200*a7c91847Schristos # endif 201*a7c91847Schristos char *strchr (), *strrchr (); 202*a7c91847Schristos # if !HAVE_MEMCHR 203*a7c91847Schristos # define memcmp(s1, s2, n) bcmp (s1, s2, n) 204*a7c91847Schristos # define memcpy(d, s, n) bcopy (s, d, n) 205*a7c91847Schristos void *memchr (); 206*a7c91847Schristos # endif 207*a7c91847Schristos #endif 208*a7c91847Schristos 209*a7c91847Schristos #include <ctype.h> 210*a7c91847Schristos /* CTYPE_DOMAIN (C) is nonzero if the unsigned char C can safely be given 211*a7c91847Schristos as an argument to <ctype.h> macros like `isspace'. */ 212*a7c91847Schristos #if STDC_HEADERS 213*a7c91847Schristos #define CTYPE_DOMAIN(c) 1 214*a7c91847Schristos #else 215*a7c91847Schristos #define CTYPE_DOMAIN(c) ((unsigned) (c) <= 0177) 216*a7c91847Schristos #endif 217*a7c91847Schristos #ifndef ISPRINT 218*a7c91847Schristos #define ISPRINT(c) (CTYPE_DOMAIN (c) && isprint (c)) 219*a7c91847Schristos #endif 220*a7c91847Schristos #ifndef ISSPACE 221*a7c91847Schristos #define ISSPACE(c) (CTYPE_DOMAIN (c) && isspace (c)) 222*a7c91847Schristos #endif 223*a7c91847Schristos #ifndef ISUPPER 224*a7c91847Schristos #define ISUPPER(c) (CTYPE_DOMAIN (c) && isupper (c)) 225*a7c91847Schristos #endif 226*a7c91847Schristos 227*a7c91847Schristos #ifndef ISDIGIT 228*a7c91847Schristos #define ISDIGIT(c) ((unsigned) (c) - '0' <= 9) 229*a7c91847Schristos #endif 230*a7c91847Schristos 231*a7c91847Schristos #include <errno.h> 232*a7c91847Schristos #if !STDC_HEADERS 233*a7c91847Schristos extern int errno; 234*a7c91847Schristos #endif 235*a7c91847Schristos 236*a7c91847Schristos #ifdef min 237*a7c91847Schristos #undef min 238*a7c91847Schristos #endif 239*a7c91847Schristos #ifdef max 240*a7c91847Schristos #undef max 241*a7c91847Schristos #endif 242*a7c91847Schristos #define min(a,b) ((a) <= (b) ? (a) : (b)) 243*a7c91847Schristos #define max(a,b) ((a) >= (b) ? (a) : (b)) 244*a7c91847Schristos 245*a7c91847Schristos /* This section contains Posix-compliant defaults for macros 246*a7c91847Schristos that are meant to be overridden by hand in config.h as needed. */ 247*a7c91847Schristos 248*a7c91847Schristos #ifndef filename_cmp 249*a7c91847Schristos #define filename_cmp(a, b) strcmp (a, b) 250*a7c91847Schristos #endif 251*a7c91847Schristos 252*a7c91847Schristos #ifndef filename_lastdirchar 253*a7c91847Schristos #define filename_lastdirchar(filename) strrchr (filename, '/') 254*a7c91847Schristos #endif 255*a7c91847Schristos 256*a7c91847Schristos #ifndef HAVE_FORK 257*a7c91847Schristos #define HAVE_FORK 1 258*a7c91847Schristos #endif 259*a7c91847Schristos 260*a7c91847Schristos #ifndef HAVE_SETMODE 261*a7c91847Schristos #define HAVE_SETMODE 0 262*a7c91847Schristos #endif 263*a7c91847Schristos 264*a7c91847Schristos #ifndef initialize_main 265*a7c91847Schristos #define initialize_main(argcp, argvp) 266*a7c91847Schristos #endif 267*a7c91847Schristos 268*a7c91847Schristos /* Do struct stat *S, *T describe the same file? Answer -1 if unknown. */ 269*a7c91847Schristos #ifndef same_file 270*a7c91847Schristos #define same_file(s,t) ((s)->st_ino==(t)->st_ino && (s)->st_dev==(t)->st_dev) 271*a7c91847Schristos #endif 272*a7c91847Schristos 273*a7c91847Schristos /* Place into Q a quoted version of A suitable for `popen' or `system', 274*a7c91847Schristos incrementing Q and junking A. 275*a7c91847Schristos Do not increment Q by more than 4 * strlen (A) + 2. */ 276*a7c91847Schristos #ifndef SYSTEM_QUOTE_ARG 277*a7c91847Schristos #define SYSTEM_QUOTE_ARG(q, a) \ 278*a7c91847Schristos { \ 279*a7c91847Schristos *(q)++ = '\''; \ 280*a7c91847Schristos for (; *(a); *(q)++ = *(a)++) \ 281*a7c91847Schristos if (*(a) == '\'') \ 282*a7c91847Schristos { \ 283*a7c91847Schristos *(q)++ = '\''; \ 284*a7c91847Schristos *(q)++ = '\\'; \ 285*a7c91847Schristos *(q)++ = '\''; \ 286*a7c91847Schristos } \ 287*a7c91847Schristos *(q)++ = '\''; \ 288*a7c91847Schristos } 289*a7c91847Schristos #endif 290*a7c91847Schristos 291*a7c91847Schristos /* these come from CVS's lib/system.h, but I wasn't sure how to include that 292*a7c91847Schristos * properly or even if I really should 293*a7c91847Schristos */ 294*a7c91847Schristos #ifndef CVS_OPENDIR 295*a7c91847Schristos #define CVS_OPENDIR opendir 296*a7c91847Schristos #endif 297*a7c91847Schristos #ifndef CVS_READDIR 298*a7c91847Schristos #define CVS_READDIR readdir 299*a7c91847Schristos #endif 300*a7c91847Schristos #ifndef CVS_CLOSEDIR 301*a7c91847Schristos #define CVS_CLOSEDIR closedir 302*a7c91847Schristos #endif 303