src/sed/basicdefs.h

   1 /*  GNU SED, a batch stream editor.
   2     Copyright (C) 1998, 1999, 2002, 2003 Free Software Foundation, Inc.
   3
   4     This program is free software; you can redistribute it and/or modify
   5     it under the terms of the GNU General Public License as published by
   6     the Free Software Foundation; either version 2, or (at your option)
   7     any later version.
   8
   9     This program is distributed in the hope that it will be useful,
  10     but WITHOUT ANY WARRANTY; without even the implied warranty of
  11     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12     GNU General Public License for more details.
  13
  14     You should have received a copy of the GNU General Public License
  15     along with this program; if not, write to the Free Software
  16     Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
  17
  18 #ifndef BASICDEFS_H
  19 #define BASICDEFS_H
  20
  21 #if defined(_AIX)
  22 #pragma alloca
  23 #else
  24 # if !defined(alloca)           /* predefined by HP cc +Olibcalls */
  25 #  ifdef __GNUC__
  26 #   define alloca(size) __builtin_alloca(size)
  27 #  else
  28 #   if HAVE_ALLOCA_H
  29 #    include <alloca.h>
  30 #   else
  31 #    if defined(__hpux)
  32         void *alloca ();
  33 #    else
  34 #     if !defined(__OS2__) && !defined(WIN32)
  35         char *alloca ();
  36 #     else
  37 #      include <malloc.h>       /* OS/2 defines alloca in here */
  38 #     endif
  39 #    endif
  40 #   endif
  41 #  endif
  42 # endif
  43 #endif
  44
  45 #ifdef HAVE_WCHAR_H
  46 # include <wchar.h>
  47 #endif
  48 #ifdef HAVE_LOCALE_H
  49 # include <locale.h>
  50 #endif
  51 #ifdef HAVE_WCTYPE_H
  52 # include <wctype.h>
  53 #endif
  54
  55
  56 #ifdef BOOTSTRAP
  57 # define false 0
  58 # define true 1
  59 # define bool unsigned
  60 # define __bool_true_false_are_defined 1
  61 #else
  62 # if HAVE_STDBOOL_H
  63 #  include <stdbool.h>
  64 # endif
  65 #endif
  66
  67 #if ENABLE_NLS
  68 # include <libintl.h>
  69 #else
  70 # define gettext(msgid) (msgid)
  71 # define ngettext(sing, plur, n) ((n) == 1 ? (sing) : (plur))
  72 #endif
  73 #define _(String) gettext(String)
  74
  75 #ifdef gettext_noop
  76 # define N_(String) gettext_noop(String)
  77 #else
  78 # define N_(String) (String)
  79 #endif
  80
  81 /* type countT is used to keep track of line numbers, etc. */
  82 typedef unsigned long countT;
  83
  84 /* Oftentimes casts are used as an ugly hack to silence warnings
  85  * from the compiler.  However, sometimes those warnings really
  86  * do point to something worth avoiding.  I define this
  87  * dummy marker to make searching for them with a text editor
  88  * much easier, in case I want to verify that they are all
  89  * legitimate.  It is defined in the way it is so that it is
  90  * easy to disable all casts so that the compiler (or lint)
  91  * can tell me potentially interesting things about what would
  92  * happen to the code without the explicit casts.
  93  */
  94 #ifdef LOUD_LINT
  95 # define CAST(x)
  96 #else
  97 # define CAST(x) (x)
  98 #endif
  99
 100
 101 /* Can the compiler grok function prototypes? */
 102 #if (defined __STDC__ && __STDC__-0) || defined __GNUC__ || defined __SUNPRO_C || __PROTOTYPES
 103 # define P_(s)          s
 104 #else
 105 # define P_(s)          ()
 106 #endif
 107
 108 /* (VOID *) is the generic pointer type; some ancient compilers
 109    don't know about (void *), and typically use (char *) instead.
 110    VCAST() is used to cast to and from (VOID *)s --- but if the
 111    compiler *does* support (void *) make this a no-op, so that
 112    the compiler can detect if we omitted an essential function
 113    declaration somewhere.
 114  */
 115 #ifndef VOID
 116 # define VOID           void
 117 # define VCAST(t)
 118 #else
 119 # define VCAST(t)       (t)
 120 #endif
 121
 122 /* some basic definitions to avoid undue promulgating of VCAST ugliness */
 123 #define MALLOC(n,t)      (VCAST(t *)ck_malloc((n)*sizeof(t)))
 124 #define REALLOC(x,n,t)   (VCAST(t *)ck_realloc(VCAST(VOID *)(x),(n)*sizeof(t)))
 125 #define MEMDUP(x,n,t)    (VCAST(t *)ck_memdup(VCAST(VOID *)(x),(n)*sizeof(t)))
 126 #define FREE(x)          (ck_free(VCAST(VOID *)x))
 127 #define MEMCPY(d,s,l)    (memcpy(VCAST(VOID *)(d),VCAST(const VOID *)(s),l))
 128 #define MEMMOVE(d,s,l)   (memmove(VCAST(VOID *)(d),VCAST(const VOID *)(s),l))
 129 #define OB_MALLOC(o,n,t) (VCAST(t *)obstack_alloc(o,(n)*sizeof(t)))
 130
 131 #define obstack_chunk_alloc  ck_malloc
 132 #define obstack_chunk_free   ck_free
 133
 134
 135 #ifdef HAVE_MEMORY_H
 136 # include <memory.h>
 137 #endif
 138
 139 #ifndef HAVE_MEMMOVE
 140 # ifndef memmove
 141    /* ../lib/libsed.a provides a memmove() if the system doesn't.
 142       Here is where we declare its return type; we don't prototype
 143       it because that sometimes causes problems when we're running in
 144       bootstrap mode on a system which really does support memmove(). */
 145    extern VOID *memmove();
 146 # endif
 147 #endif
 148
 149 #ifndef HAVE_MEMCPY
 150 # ifndef memcpy
 151 #  define memcpy(d, s, n)       memmove(d, s, n)
 152 # endif
 153 #endif
 154
 155 #ifndef HAVE_STRERROR
 156  extern char *strerror P_((int e));
 157 #endif
 158
 159
 160 /* handle misdesigned <ctype.h> macros (snarfed from lib/regex.c) */
 161 /* Jim Meyering writes:
 162
 163    "... Some ctype macros are valid only for character codes that
 164    isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
 165    using /bin/cc or gcc but without giving an ansi option).  So, all
 166    ctype uses should be through macros like ISPRINT...  If
 167    STDC_HEADERS is defined, then autoconf has verified that the ctype
 168    macros don't need to be guarded with references to isascii. ...
 169    Defining isascii to 1 should let any compiler worth its salt
 170    eliminate the && through constant folding."
 171    Solaris defines some of these symbols so we must undefine them first. */
 172
 173 #undef ISASCII
 174 #if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
 175 # define ISASCII(c) 1
 176 #else
 177 # define ISASCII(c) isascii(c)
 178 #endif
 179
 180 #if defined isblank || defined HAVE_ISBLANK
 181 # define ISBLANK(c) (ISASCII (c) && isblank (c))
 182 #else
 183 # define ISBLANK(c) ((c) == ' ' || (c) == '\t')
 184 #endif
 185
 186 #undef ISPRINT
 187 #define ISPRINT(c) (ISASCII (c) && isprint (c))
 188 #define ISDIGIT(c) (ISASCII (c) && isdigit (c))
 189 #define ISALNUM(c) (ISASCII (c) && isalnum (c))
 190 #define ISALPHA(c) (ISASCII (c) && isalpha (c))
 191 #define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
 192 #define ISLOWER(c) (ISASCII (c) && islower (c))
 193 #define ISPUNCT(c) (ISASCII (c) && ispunct (c))
 194 #define ISSPACE(c) (ISASCII (c) && isspace (c))
 195 #define ISUPPER(c) (ISASCII (c) && isupper (c))
 196 #define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))
 197
 198 #ifndef initialize_main
 199 # ifdef __EMX__
 200 #  define initialize_main(argcp, argvp) \
 201   { _response(argcp, argvp); _wildcard(argcp, argvp); }
 202 # else /* NOT __EMX__ */
 203 #  define initialize_main(argcp, argvp)
 204 # endif
 205 #endif
 206
 207 #endif /*!BASICDEFS_H*/