source: trunk/src/sed/basicdefs.h@ 3481

/*  GNU SED, a batch stream editor.
    Copyright (C) 1998, 1999, 2002, 2003 Free Software Foundation, Inc.

    This program 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.

    This program 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 this program; if not, write to the Free Software
    Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */

#ifndef BASICDEFS_H
#define BASICDEFS_H

#if defined(_AIX)
#pragma alloca
#else
# if !defined(alloca)           /* predefined by HP cc +Olibcalls */
#  ifdef __GNUC__
#   define alloca(size) __builtin_alloca(size)
#  else
#   if HAVE_ALLOCA_H
#    include <alloca.h>
#   else
#    if defined(__hpux)
        void *alloca ();
#    else
#     if !defined(__OS2__) && !defined(WIN32)
        char *alloca ();
#     else
#      include <malloc.h>       /* OS/2 defines alloca in here */
#     endif
#    endif
#   endif
#  endif
# endif
#endif

#ifdef HAVE_WCHAR_H
# include <wchar.h>
#endif
#ifdef HAVE_LOCALE_H
# include <locale.h>
#endif
#ifdef HAVE_WCTYPE_H
# include <wctype.h>
#endif


#ifdef BOOTSTRAP
# define false 0
# define true 1
# define bool unsigned
# define __bool_true_false_are_defined 1
#else
# if HAVE_STDBOOL_H || defined(__HAIKU__) /* haiku/gcc2 hack */ 
#  include <stdbool.h>
# endif
#endif

#if ENABLE_NLS
# include <libintl.h>
#else
# define gettext(msgid) (msgid)
# define ngettext(sing, plur, n) ((n) == 1 ? (sing) : (plur))
#endif
#define _(String) gettext(String)

#ifdef gettext_noop
# define N_(String) gettext_noop(String)
#else
# define N_(String) (String)
#endif

/* type countT is used to keep track of line numbers, etc. */
typedef unsigned long countT;

/* Oftentimes casts are used as an ugly hack to silence warnings
 * from the compiler.  However, sometimes those warnings really
 * do point to something worth avoiding.  I define this
 * dummy marker to make searching for them with a text editor
 * much easier, in case I want to verify that they are all
 * legitimate.  It is defined in the way it is so that it is
 * easy to disable all casts so that the compiler (or lint)
 * can tell me potentially interesting things about what would
 * happen to the code without the explicit casts.
 */
#ifdef LOUD_LINT
# define CAST(x)
#else
# define CAST(x) (x)
#endif


/* Can the compiler grok function prototypes? */
#if (defined __STDC__ && __STDC__-0) || defined __GNUC__ || defined __SUNPRO_C || __PROTOTYPES
# define P_(s)          s
#else
# define P_(s)          ()
#endif

/* (VOID *) is the generic pointer type; some ancient compilers
   don't know about (void *), and typically use (char *) instead.
   VCAST() is used to cast to and from (VOID *)s --- but if the
   compiler *does* support (void *) make this a no-op, so that
   the compiler can detect if we omitted an essential function
   declaration somewhere.
 */
#ifndef VOID
# define VOID           void
# define VCAST(t)       
#else
# define VCAST(t)       (t)
#endif

/* some basic definitions to avoid undue promulgating of VCAST ugliness */
#define MALLOC(n,t)      (VCAST(t *)ck_malloc((n)*sizeof(t)))
#define REALLOC(x,n,t)   (VCAST(t *)ck_realloc(VCAST(VOID *)(x),(n)*sizeof(t)))
#define MEMDUP(x,n,t)    (VCAST(t *)ck_memdup(VCAST(VOID *)(x),(n)*sizeof(t)))
#define FREE(x)          (ck_free(VCAST(VOID *)x))
#define MEMCPY(d,s,l)    (memcpy(VCAST(VOID *)(d),VCAST(const VOID *)(s),l))
#define MEMMOVE(d,s,l)   (memmove(VCAST(VOID *)(d),VCAST(const VOID *)(s),l))
#define OB_MALLOC(o,n,t) (VCAST(t *)obstack_alloc(o,(n)*sizeof(t)))

#define obstack_chunk_alloc  ck_malloc
#define obstack_chunk_free   ck_free


#ifdef HAVE_MEMORY_H
# include <memory.h>
#endif

#ifndef HAVE_MEMMOVE
# ifndef memmove
   /* ../lib/libsed.a provides a memmove() if the system doesn't.
      Here is where we declare its return type; we don't prototype
      it because that sometimes causes problems when we're running in
      bootstrap mode on a system which really does support memmove(). */
   extern VOID *memmove();
# endif
#endif

#ifndef HAVE_MEMCPY
# ifndef memcpy
#  define memcpy(d, s, n)       memmove(d, s, n)
# endif
#endif

#ifndef HAVE_STRERROR
 extern char *strerror P_((int e));
#endif


/* handle misdesigned <ctype.h> macros (snarfed from lib/regex.c) */
/* Jim Meyering writes:

   "... Some ctype macros are valid only for character codes that
   isascii says are ASCII (SGI's IRIX-4.0.5 is one such system --when
   using /bin/cc or gcc but without giving an ansi option).  So, all
   ctype uses should be through macros like ISPRINT...  If
   STDC_HEADERS is defined, then autoconf has verified that the ctype
   macros don't need to be guarded with references to isascii. ...
   Defining isascii to 1 should let any compiler worth its salt
   eliminate the && through constant folding."
   Solaris defines some of these symbols so we must undefine them first. */

#undef ISASCII
#if defined STDC_HEADERS || (!defined isascii && !defined HAVE_ISASCII)
# define ISASCII(c) 1
#else
# define ISASCII(c) isascii(c)
#endif

#if defined isblank || defined HAVE_ISBLANK
# define ISBLANK(c) (ISASCII (c) && isblank (c))
#else
# define ISBLANK(c) ((c) == ' ' || (c) == '\t')
#endif

#undef ISPRINT
#define ISPRINT(c) (ISASCII (c) && isprint (c))
#define ISDIGIT(c) (ISASCII (c) && isdigit (c))
#define ISALNUM(c) (ISASCII (c) && isalnum (c))
#define ISALPHA(c) (ISASCII (c) && isalpha (c))
#define ISCNTRL(c) (ISASCII (c) && iscntrl (c))
#define ISLOWER(c) (ISASCII (c) && islower (c))
#define ISPUNCT(c) (ISASCII (c) && ispunct (c))
#define ISSPACE(c) (ISASCII (c) && isspace (c))
#define ISUPPER(c) (ISASCII (c) && isupper (c))
#define ISXDIGIT(c) (ISASCII (c) && isxdigit (c))

#ifndef initialize_main
# ifdef __EMX__
#  define initialize_main(argcp, argvp) \
  { _response(argcp, argvp); _wildcard(argcp, argvp); }
# else /* NOT __EMX__ */
#  define initialize_main(argcp, argvp)
# endif
#endif

#endif /*!BASICDEFS_H*/