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+/*-
+******************************************************************************
+******************************************************************************
+**
+**  MODULE
+**
+**      $RCSfile: sysdep.h,v $
+**      $Revision: 3.71 $
+**      $Date: 1996/08/18 20:37:06 $
+**
+**  DESCRIPTION
+**
+**      A 32-bit implementation of BibTeX v0.99c for MS-DOS, OS/2 2.x, 
+**      Unix and VMS.  This C language implementation is based on the 
+**      original WEB source but it has been enhanced to support 8-bit input
+**      characters and a very large processing capacity.
+**
+**      For documentation describing how to use and build this program, 
+**      see the 00README.TXT file that accompanies this distribution.
+**
+**  MODULE CONTENTS
+**
+**      This module defines as many system dependent things as possible.
+**      System / compiler dependent code should only appear in sysdep.h,
+**      bibtex.c and utils.c.  System dependent code should be delimited by
+**      preprocessor conditionals.  Look for:
+**
+**          #ifdef MSDOS
+**          #ifdef OS2
+**          #ifdef UNIX
+**          #ifdef VMS
+**
+**  AUTHORS
+**
+**      Original WEB translation to C, conversion to "big" (32-bit) capacity,
+**      addition of run-time selectable capacity and 8-bit support extensions
+**      by:
+**
+**          Niel Kempson
+**          Snowy Owl Systems Limited, Cheltenham, England
+**          E-mail: kempson@snowyowl.co.uk
+**      
+**      8-bit support extensions also by:
+**
+**          Alejandro Aguilar-Sierra
+**          Centro de Ciencias de la Atm\'osfera, 
+**          Universidad Nacional Aut\'onoma de M\'exico, M\'exico
+**          E-mail: asierra@servidor.unam.mx
+**
+**  COPYRIGHT
+**
+**      This implementation copyright (c) 1991-1995 by Niel Kempson
+**           and copyright (c) 1995 by Alejandro Aguilar-Sierra.
+**
+**      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 1, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
+**
+**      In other words, you are welcome to use, share and improve this
+**      program.  You are forbidden to forbid anyone else to use, share
+**      and improve what you give them.  Help stamp out software-hoarding!
+**
+**  ACKNOWLEDGEMENT
+**      
+**      The original BibTeX was written by Oren Patashnik using Donald 
+**      Knuth's WEB system.  This format produces a PASCAL program for 
+**      execution and a TeX documented version of the source code. This 
+**      program started as a (manual) translation of the WEB source into C.
+**  
+**  CHANGE LOG
+**
+**      $Log: sysdep.h,v $
+**      Revision 3.71  1996/08/18  20:37:06  kempson
+**      Official release 3.71 (see HISTORY file for details).
+**
+**      Revision 3.70  1996/04/08  10:08:40  kempson
+**      Final documentation & cosmetic changes for official release 3.70.
+**
+**      Revision 3.6  1995/10/21  22:13:13  kempson
+**      Added support for DJGPP under MSDOS.
+**
+**      Revision 3.5  1995/09/24  20:44:37  kempson
+**      Many changes for final beta test version.
+**
+**      Revision 3.4  1995/04/09  22:15:46  kempson
+**      Placed under RCS control
+**
+******************************************************************************
+******************************************************************************
+*/
+#ifndef __SYSDEP_H__
+# define __SYSDEP_H__               1
+
+
+/*-
+**============================================================================
+** Include the relevant header files.
+**============================================================================
+*/
+#include <stdlib.h>
+#include <stdio.h>
+#include <setjmp.h>
+#include <string.h>
+#include <ctype.h>
+
+
+/*-
+**============================================================================
+** For each environment (MSDOS, OS/2, UNIX & VMS), the following
+** preprocessor macros must be defined:
+**
+** IMPLEMENTATION       the implementation string reported by BibTeX when
+**                      the --version is specified.
+**
+** PATH_DELIM           the character used to separate components of a
+**                      search path string.
+**
+**                          Note: usually ';' for DOS & OS/2, ':' for Unix
+**                                and ',' for VMS.
+**============================================================================
+*/
+#ifdef WIN32
+# ifdef _MSC_VER
+#  define IMPLEMENTATION            "Microsoft(R) C/C++ for Win32"
+# else
+#  define IMPLEMENTATION            "Unknown C/C++ for Win32"
+# endif				/* _MSC_VER */
+#endif
+
+#ifdef  MSDOS
+
+# ifdef DJGPP
+#  define IMPLEMENTATION            "DJGPP/GNU C 32 bit bound for DOS"
+# else
+#  define IMPLEMENTATION            "EMX/GNU C 32 bit bound for DOS"
+# endif		                /* DJGPP */
+
+# define PATH_DELIM                 ';'
+#endif				/* MSDOS */
+
+#ifdef  OS2
+# define IMPLEMENTATION             "EMX/GNU C 32 bit for OS/2"
+# define PATH_DELIM                 ';'
+#endif				/* OS2 */
+
+#ifdef  UNIX
+# define IMPLEMENTATION             "C for Unix"
+# define PATH_DELIM                 ':'
+#endif				/* UNIX */
+
+#ifdef  VMS
+# define IMPLEMENTATION             "GNU C for VMS"
+# define PATH_DELIM                 ','
+#endif				/* VMS */
+
+
+/*-
+**============================================================================
+** Define the exit status values that should be returned to the operating
+** system.
+**============================================================================
+*/
+#ifdef VMS
+# define NORMAL_EXIT_STATUS         0x10000001L
+# define WARNING_EXIT_STATUS        0x10000000L
+# define ERROR_EXIT_STATUS          0x10000002L
+# define FATAL_EXIT_STATUS          0x10000004L
+#else                           /* NOT VMS */
+# define NORMAL_EXIT_STATUS         0
+# define WARNING_EXIT_STATUS        1
+# define ERROR_EXIT_STATUS          2
+# define FATAL_EXIT_STATUS          3
+#endif                          /* VMS */
+
+
+/*-
+**============================================================================
+** Some macros to satisfy ANSI C's strict (for C anyway) type checking.
+**============================================================================
+*/
+#define FPRINTF                     (void) fprintf
+#define FPUTC                       (void) fputc
+#define PRINTF                      (void) printf
+#define PUTC                        (void) putc
+#define SPRINTF                     (void) sprintf
+#define CHR(x)                      (x)
+
+
+/*-
+**============================================================================
+** Some macros to make the C code look more like the WEB from which it was
+** translated.
+**============================================================================
+*/
+#define BEGIN                       {
+#define END                         }
+#define TRUE                        1
+#define FALSE                       0
+#define REPEAT                      do
+#define UNTIL(X)                    while ( ! (X))
+#define DIV                         /
+#define MOD                         %
+
+
+/*-
+**============================================================================
+** WEB section number:   39
+** ~~~~~~~~~~~~~~~~~~~~
+** We implement path searching for the function |a_open_in|. If
+** |name_of_file| doesn't start with `\' then path names from the
+** appropriate path list are prepended until success or the end of the path
+** list is reached.
+**============================================================================
+*/
+#define NO_SEARCH_PATH              0
+#define AUX_FILE_SEARCH_PATH        1
+#define BIB_FILE_SEARCH_PATH        2
+#define BST_FILE_SEARCH_PATH        3
+#define CSF_FILE_SEARCH_PATH        4
+
+
+/*-
+**============================================================================
+** The Makefile specifies a number of preprocessor macros used to control
+** how BibTeX searches for input files.  If any of them are undefined, an
+** error message will be issued by the C preprocessor.  The macros
+** required are:
+**
+**  AUX_INPUT_ENVVAR  - environment variable specifying the search path for
+**                      .aux files 
+**  AUX_INPUT_PATH    - fallback search path for .aux files
+**  BIB_INPUT_ENVVAR  - environment variable specifying the search path for
+**                      .bib files 
+**  BIB_INPUT_PATH    - fallback search path for .bib files
+**  BST_INPUT_ENVVAR  - environment variable specifying the search path for
+**                      .bst files 
+**  BST_INPUT_PATH    - fallback search path for .bst files
+**  CSF_INPUT_ENVVAR  - environment variable specifying the search path for
+**                      .csf files 
+**  CSF_INPUT_PATH    - fallback search path for .csf files
+**
+**  CSF_FILE_ENVVAR   - environment variable specifying the default .csf file
+**  CSF_FILE_NAME     - fallback name of the default .csf file
+**============================================================================
+*/
+#ifndef KPATHSEA
+#ifndef AUX_INPUT_ENVVAR
+# error Macro 'AUX_INPUT_ENVVAR' has not been defined.  Please check Makefile.
+#endif
+
+#ifndef AUX_INPUT_PATH
+# error Macro 'AUX_INPUT_PATH' has not been defined.  Please check Makefile.
+#endif
+
+#ifndef BIB_INPUT_ENVVAR
+# error Macro 'BIB_INPUT_ENVVAR' has not been defined.  Please check Makefile.
+#endif
+
+#ifndef BIB_INPUT_PATH
+# error Macro 'BIB_INPUT_PATH' has not been defined.  Please check Makefile.
+#endif
+
+#ifndef BST_INPUT_ENVVAR
+# error Macro 'BST_INPUT_ENVVAR' has not been defined.  Please check Makefile.
+#endif
+
+#ifndef BST_INPUT_PATH
+# error Macro 'BST_INPUT_PATH' has not been defined.  Please check Makefile.
+#endif
+
+#ifndef CSF_INPUT_ENVVAR
+# error Macro 'CSF_INPUT_ENVVAR' has not been defined.  Please check Makefile.
+#endif
+
+#ifndef CSF_INPUT_PATH
+# error Macro 'CSF_INPUT_PATH' has not been defined.  Please check Makefile.
+#endif
+
+#ifndef CSF_FILE_ENVVAR
+# error Macro 'CSF_FILE_ENVVAR' has not been defined.  Please check Makefile.
+#endif
+
+#ifndef CSF_FILE_NAME
+# error Macro 'CSF_FILE_NAME' has not been defined.  Please check Makefile.
+#endif
+#endif /* ! KPATHSEA */
+
+
+#endif                          /* __SYSDEP_H__ */