File: builtins.h

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/* builtins.h -- What a builtin looks like, and where to find them. */

/* Copyright (C) 1987-2009 Free Software Foundation, Inc.

   This file is part of GNU Bash, the Bourne Again SHell.

   Bash 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 3 of the License, or
   (at your option) any later version.

   Bash 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 Bash.  If not, see <http://www.gnu.org/licenses/>.
*/

#include "config.h"

#if defined (HAVE_UNISTD_H)
#  ifdef _MINIX
#    include <sys/types.h>
#  endif
#  include <unistd.h>
#endif

#include "command.h"
#include "general.h"

#if defined (ALIAS)
#include "alias.h"
#endif

/* Flags describing various things about a builtin. */
#define BUILTIN_ENABLED 0x01	/* This builtin is enabled. */
#define BUILTIN_DELETED 0x02	/* This has been deleted with enable -d. */
#define STATIC_BUILTIN  0x04	/* This builtin is not dynamically loaded. */
#define SPECIAL_BUILTIN 0x08	/* This is a Posix `special' builtin. */
#define ASSIGNMENT_BUILTIN 0x10	/* This builtin takes assignment statements. */
#define POSIX_BUILTIN	0x20	/* This builtins is special in the Posix command search order. */
#define LOCALVAR_BUILTIN   0x40	/* This builtin creates local variables */

#define BASE_INDENT	4

/* The thing that we build the array of builtins out of. */
struct builtin {
  char *name;			/* The name that the user types. */
  sh_builtin_func_t *function;	/* The address of the invoked function. */
  int flags;			/* One of the #defines above. */
  char * const *long_doc;	/* NULL terminated array of strings. */
  const char *short_doc;	/* Short version of documentation. */
  char *handle;			/* for future use */
};

/* Found in builtins.c, created by builtins/mkbuiltins. */
extern int num_shell_builtins;	/* Number of shell builtins. */
extern struct builtin static_shell_builtins[];
extern struct builtin *shell_builtins;
extern struct builtin *current_builtin;