gnu/dist/grep/src/system.h

   1 /*      $NetBSD$        */
   2
   3 /* Portability cruft.  Include after config.h and sys/types.h.
   4    Copyright 1996, 1998, 1999, 2000 Free Software Foundation, Inc.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 2, or (at your option)
   9    any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program; if not, write to the Free Software
  18    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
  19    02111-1307, USA.  */
  20
  21 #undef PARAMS
  22 #if defined (__STDC__) && __STDC__
  23 # ifndef _PTR_T
  24 # define _PTR_T
  25   typedef void * ptr_t;
  26 # endif
  27 # define PARAMS(x) x
  28 #else
  29 # ifndef _PTR_T
  30 # define _PTR_T
  31   typedef char * ptr_t;
  32 # endif
  33 # define PARAMS(x) ()
  34 #endif
  35
  36 #ifdef HAVE_UNISTD_H
  37 # include <fcntl.h>
  38 # include <unistd.h>
  39 #else
  40 # define O_RDONLY 0
  41 # define SEEK_SET 0
  42 # define SEEK_CUR 1
  43 int open(), read(), close();
  44 #endif
  45
  46 #include <errno.h>
  47 #ifndef errno
  48 extern int errno;
  49 #endif
  50
  51 #ifndef HAVE_STRERROR
  52 extern int sys_nerr;
  53 extern char *sys_errlist[];
  54 # define strerror(E) (0 <= (E) && (E) < sys_nerr ? _(sys_errlist[E]) : _("Unknown system error"))
  55 #endif
  56
  57 /* Some operating systems treat text and binary files differently.  */
  58 #ifdef __BEOS__
  59 # undef O_BINARY /* BeOS 5 has O_BINARY and O_TEXT, but they have no effect. */
  60 #endif
  61 #ifdef HAVE_DOS_FILE_CONTENTS
  62 # include <io.h>
  63 # ifdef HAVE_SETMODE
  64 #  define SET_BINARY(fd)  setmode (fd, O_BINARY)
  65 # else
  66 #  define SET_BINARY(fd)  _setmode (fd, O_BINARY)
  67 # endif
  68 #endif
  69
  70 #ifdef HAVE_DOS_FILE_NAMES
  71 # define IS_SLASH(c) ((c) == '/' || (c) == '\\')
  72 # define FILESYSTEM_PREFIX_LEN(f) ((f)[0] && (f)[1] == ':' ? 2 : 0)
  73 #endif
  74
  75 #ifndef IS_SLASH
  76 # define IS_SLASH(c) ((c) == '/')
  77 #endif
  78
  79 #ifndef FILESYSTEM_PREFIX_LEN
  80 # define FILESYSTEM_PREFIX_LEN(f) 0
  81 #endif
  82
  83 int isdir PARAMS ((char const *));
  84
  85 #ifdef HAVE_DIR_EACCES_BUG
  86 # ifdef EISDIR
  87 #  define is_EISDIR(e, f) \
  88      ((e) == EISDIR \
  89       || ((e) == EACCES && isdir (f) && ((e) = EISDIR, 1)))
  90 # else
  91 #  define is_EISDIR(e, f) ((e) == EACCES && isdir (f))
  92 # endif
  93 #endif
  94
  95 #ifndef is_EISDIR
  96 # ifdef EISDIR
  97 #  define is_EISDIR(e, f) ((e) == EISDIR)
  98 # else
  99 #  define is_EISDIR(e, f) 0
 100 # endif
 101 #endif
 102
 103 #if STAT_MACROS_BROKEN
 104 # undef S_ISDIR
 105 # undef S_ISREG
 106 #endif
 107 #if !defined(S_ISDIR) && defined(S_IFDIR)
 108 # define S_ISDIR(Mode) (((Mode) & S_IFMT) == S_IFDIR)
 109 #endif
 110 #if !defined(S_ISREG) && defined(S_IFREG)
 111 # define S_ISREG(Mode) (((Mode) & S_IFMT) == S_IFREG)
 112 #endif
 113
 114 #ifdef STDC_HEADERS
 115 # include <stdlib.h>
 116 #else
 117 char *getenv ();
 118 ptr_t malloc(), realloc(), calloc();
 119 void free();
 120 #endif
 121
 122 #if __STDC__
 123 # include <stddef.h>
 124 #endif
 125 #ifdef STDC_HEADERS
 126 # include <limits.h>
 127 #endif
 128 #ifndef CHAR_BIT
 129 # define CHAR_BIT 8
 130 #endif
 131 /* The extra casts work around common compiler bugs.  */
 132 #define TYPE_SIGNED(t) (! ((t) 0 < (t) -1))
 133 #define TYPE_MINIMUM(t) ((t) (TYPE_SIGNED (t) \
 134                               ? ~ (t) 0 << (sizeof (t) * CHAR_BIT - 1) \
 135                               : (t) 0))
 136 #define TYPE_MAXIMUM(t) ((t) (~ (t) 0 - TYPE_MINIMUM (t)))
 137 #ifndef CHAR_MAX
 138 # define CHAR_MAX TYPE_MAXIMUM (char)
 139 #endif
 140 #ifndef INT_MAX
 141 # define INT_MAX TYPE_MAXIMUM (int)
 142 #endif
 143 #ifndef UCHAR_MAX
 144 # define UCHAR_MAX TYPE_MAXIMUM (unsigned char)
 145 #endif
 146
 147 #if !defined(STDC_HEADERS) && defined(HAVE_STRING_H) && defined(HAVE_MEMORY_H)
 148 # include <memory.h>
 149 #endif
 150 #if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
 151 # include <string.h>
 152 #else
 153 # include <strings.h>
 154 # undef strchr
 155 # define strchr index
 156 # undef strrchr
 157 # define strrchr rindex
 158 # undef memcpy
 159 # define memcpy(d, s, n) bcopy (s, d, n)
 160 #endif
 161 #ifndef HAVE_MEMCHR
 162 ptr_t memchr();
 163 #endif
 164 #if ! defined HAVE_MEMMOVE && ! defined memmove
 165 # define memmove(d, s, n) bcopy (s, d, n)
 166 #endif
 167
 168 #include <ctype.h>
 169
 170 #ifndef isgraph
 171 # define isgraph(C) (isprint(C) && !isspace(C))
 172 #endif
 173
 174 #if defined (STDC_HEADERS) || (!defined (isascii) && !defined (HAVE_ISASCII))
 175 # define IN_CTYPE_DOMAIN(c) 1
 176 #else
 177 # define IN_CTYPE_DOMAIN(c) isascii(c)
 178 #endif
 179
 180 #define ISALPHA(C)      (IN_CTYPE_DOMAIN (C) && isalpha (C))
 181 #define ISUPPER(C)      (IN_CTYPE_DOMAIN (C) && isupper (C))
 182 #define ISLOWER(C)      (IN_CTYPE_DOMAIN (C) && islower (C))
 183 #define ISDIGIT(C)      (IN_CTYPE_DOMAIN (C) && isdigit (C))
 184 #define ISXDIGIT(C)     (IN_CTYPE_DOMAIN (C) && isxdigit (C))
 185 #define ISSPACE(C)      (IN_CTYPE_DOMAIN (C) && isspace (C))
 186 #define ISPUNCT(C)      (IN_CTYPE_DOMAIN (C) && ispunct (C))
 187 #define ISALNUM(C)      (IN_CTYPE_DOMAIN (C) && isalnum (C))
 188 #define ISPRINT(C)      (IN_CTYPE_DOMAIN (C) && isprint (C))
 189 #define ISGRAPH(C)      (IN_CTYPE_DOMAIN (C) && isgraph (C))
 190 #define ISCNTRL(C)      (IN_CTYPE_DOMAIN (C) && iscntrl (C))
 191
 192 #define TOLOWER(C) (ISUPPER(C) ? tolower(C) : (C))
 193
 194 #if ENABLE_NLS
 195 # include <libintl.h>
 196 # define _(String) gettext (String)
 197 #else
 198 # define _(String) String
 199 #endif
 200 #define N_(String) String
 201
 202 #if HAVE_SETLOCALE
 203 # include <locale.h>
 204 #endif
 205
 206 #ifndef initialize_main
 207 #define initialize_main(argcp, argvp)
 208 #endif