/*  _______________________________________________________________________
 *
 *                        RDPARM/PTRAJ: APR 2000
 *  _______________________________________________________________________
 *
 *  $Header: /thr/gamow/cvsroot/amber7/src/ptraj/io.h,v 1.5 2000/05/10 21:52:00 cheatham Exp $
 *
 *  Revision: $Revision: 1.5 $
 *  Date: $Date: 2000/05/10 21:52:00 $
 *  Last checked in by $Author: cheatham $
 *
 *  This source is now archived under CVS at Scripps in the amber7 tree.
 *
 *  NOTE: this is a beta, pre-release version, is under constant development,
 *  probably contains some bugs and is under constant revision; therefore
 *  take care.  Please report bugs (and fixes!) to cheatham@chpc.utah.edu or 
 *  cheatham@cgl.ucsf.edu
 *
 *  Do not distribute this code without explicit permission.
 *  Do not incorporate into other codes without explicit permission.
 *
 *  Current contact information:
 *
 *     Thomas Cheatham, III
 *     2000 East, 30 South, Skaggs Hall 201
 *     Department of Medicinal Chemistry
 *     University of Utah
 *     Salt Lake City, UT 84112-5820
 *     cheatham@chpc.utah.edu
 *     (801) 587-9653
 *     FAX: (801) 585-5366
 *
 *  Other contributors
 *
 *    David Case (Scripps)
 *    Michael Crowley (Scripps)
 *    Jed Pitera (UCSF)
 *    Vickie Tsui (Scripps)
 *  _______________________________________________________________________
 */


typedef struct _fileType {
  char *buffer;
  FILE *file;
  char *mode;
  int popen;
} fileType;

#ifdef IO_MODULE

/*
 * GLOBAL: fileStack -- contains a circular list fileType structures in
 * order to maintain a list of opened files and respective filenames, 
 * modes, and popen status.
 *
 */

stackType *fileStack = (stackType *) NULL;


#else /* IO_MODULE */

extern stackType *fileStack;

#  ifdef __STDC__

extern void doSystem(char *);
extern char * promptToOpenFile( FILE **, char *, char *, char *);
extern int openFile( FILE **, char *, char *);
extern int  promptUserResponse(FILE *, FILE *, char *, char *, int);
extern char * promptUser(FILE *, FILE *, char *);
extern int safe_fclose(FILE *);
extern int safe_fclose_buffer(char *);
extern int safe_close(FILE *, char *);
extern FILE *safe_open(FILE *, char *, int);
extern FILE *safe_fopen(char *, char *);
extern FILE *safe_popen(FILE *, char *);
extern FILE *safe_freopen(FILE *);
     
#  else

extern void doSystem();
extern char * promptToOpenFile();
extern int openFile();
extern int  promptUserResponse();
extern char * promptUser();
extern int safe_fclose();
extern int safe_fclose_buffer();
extern int safe_close();
extern FILE *safe_open();
extern FILE *safe_fopen();
extern FILE *safe_popen();
extern FILE *safe_freopen();
     
#  endif

#endif /* IO_MODULE */