/* Copyright (C) 1994, 1996, 1998, 1999 artofcode LLC.  All rights reserved.
  
  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 of the License, 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, Inc.,
  59 Temple Place, Suite 330, Boston, MA, 02111-1307.

*/

/*$Id: gscdefs.h,v 1.2.6.1.2.1 2003/01/17 00:49:02 giles Exp $ */
/* Prototypes for configuration definitions in gconfig.c. */

#ifndef gscdefs_INCLUDED
#  define gscdefs_INCLUDED

#include "gconfigv.h"

/*
 * This file may be #included in places that don't even have stdpre.h,
 * so it mustn't use any Ghostscript definitions in any code that is
 * actually processed here (as opposed to being part of a macro
 * definition).
 */

/* Miscellaneous system constants (read-only systemparams). */
/* They should all be const, but one application needs some of them */
/* to be writable.... */

#if SYSTEM_CONSTANTS_ARE_WRITABLE
#  define CONFIG_CONST		/* */
#else
#  define CONFIG_CONST const
#endif

extern CONFIG_CONST long gs_buildtime;
extern const char *CONFIG_CONST gs_copyright;
extern const char *CONFIG_CONST gs_product;
extern const char *CONFIG_CONST gs_productfamily;
extern CONFIG_CONST long gs_revision;
extern CONFIG_CONST long gs_revisiondate;
extern CONFIG_CONST long gs_serialnumber;

/* Installation directories and files */
extern const char *const gs_doc_directory;
extern const char *const gs_lib_default_path;
extern const char *const gs_init_file;

/* Resource tables.  In order to avoid importing a large number of types, */
/* we only provide macros for some externs, not the externs themselves. */

#define extern_gx_device_halftone_list()\
  typedef DEVICE_HALFTONE_RESOURCE_PROC((*gx_dht_proc));\
  extern const gx_dht_proc gx_device_halftone_list[]

#define extern_gx_image_class_table()\
  extern const gx_image_class_t gx_image_class_table[]
extern const unsigned gx_image_class_table_count;

#define extern_gx_image_type_table()\
  extern const gx_image_type_t * const gx_image_type_table[]
extern const unsigned gx_image_type_table_count;

/* We need the extra typedef so that the const will apply to the table. */
#define extern_gx_init_table()\
  typedef init_proc((*gx_init_proc));\
  extern const gx_init_proc gx_init_table[]

#define extern_gx_io_device_table()\
  extern const gx_io_device * const gx_io_device_table[]
extern const unsigned gx_io_device_table_count;

/* Return the list of device prototypes, a NULL list of their structure */
/* descriptors (no longer used), and (as the value) the length of the lists. */
#define extern_gs_lib_device_list()\
  int gs_lib_device_list(P2(const gx_device * const **plist,\
			    gs_memory_struct_type_t **pst))

#endif /* gscdefs_INCLUDED */