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/*
 * This file is part of the GROMACS molecular simulation package.
 *
 * Copyright (c) 1991-2000, University of Groningen, The Netherlands.
 * Copyright (c) 2001-2004, The GROMACS development team.
 * Copyright (c) 2013,2014, by the GROMACS development team, led by
 * Mark Abraham, David van der Spoel, Berk Hess, and Erik Lindahl,
 * and including many others, as listed in the AUTHORS file in the
 * top-level source directory and at http://www.gromacs.org.
 *
 * GROMACS is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public License
 * as published by the Free Software Foundation; either version 2.1
 * of the License, or (at your option) any later version.
 *
 * GROMACS 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
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with GROMACS; if not, see
 * http://www.gnu.org/licenses, or write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA.
 *
 * If you want to redistribute modifications to GROMACS, please
 * consider that scientific software is very special. Version
 * control is crucial - bugs must be traceable. We will be happy to
 * consider code for inclusion in the official distribution, but
 * derived work must not be called official GROMACS. Details are found
 * in the README & COPYING files - if they are missing, get the
 * official version at http://www.gromacs.org.
 *
 * To help us fund GROMACS development, we humbly ask that you cite
 * the research papers on the package. Check out http://www.gromacs.org.
 */

#ifndef GMX_FILEIO_CONFIO_H
#define GMX_FILEIO_CONFIO_H

#include <stdio.h>

#include "gromacs/fileio/trx.h"
#include "gromacs/legacyheaders/types/simple.h"

/* For reading coordinate files it is assumed that enough memory
 * has been allocated beforehand.
 */
#ifdef __cplusplus
extern "C" {
#endif

struct gmx_mtop_t;
struct t_atoms;

int read_g96_conf(FILE *fp, const char *infile, t_trxframe *fr, char *line);
/* read a Gromos96 coordinate or trajectory file,                       *
 * returns the number of atoms                                          *
 * sets what's in the frame in info                                     *
 * read from fp, infile is only needed for error messages               *
 * nwanted is the number of wanted coordinates,                         *
 * set this to -1 if you want to know the number of atoms in the file   *
 * title, atoms, x, v can all be NULL, in which case they won't be read *
 * line holds the previous line for trajectory reading                  */

void write_g96_conf(FILE *out, t_trxframe *fr, int nindex, const atom_id *index);
/* write a Gromos96 coordinate file or trajectory frame *
 * index can be NULL                                    */

gmx_bool gro_next_x_or_v(FILE *status, t_trxframe *fr);
int gro_first_x_or_v(FILE *status, t_trxframe *fr);
/* read first/next x and/or v frame from gro file */

void write_hconf_indexed_p(FILE *out, const char *title, struct t_atoms *atoms,
                           int nx, const atom_id index[], int ndec,
                           rvec *x, rvec *v, matrix box);

void write_hconf_p(FILE *out, const char *title, struct t_atoms *atoms, int ndec,
                   rvec *x, rvec *v, matrix box);
/* Write a Gromos file with precision ndec: number of decimal places in x,
 * v has one place more. */

void write_sto_conf_indexed(const char *outfile, const char *title,
                            struct t_atoms *atoms,
                            rvec x[], rvec *v, int ePBC, matrix box,
                            atom_id nindex, atom_id index[]);
/* like write_sto_conf, but indexed */

void write_sto_conf(const char *outfile, const char *title,
                    struct t_atoms *atoms,
                    rvec x[], rvec *v, int ePBC, matrix box);
/* write atoms, x, v (if .gro and not NULL) and box (if not NULL)
 * to an STO (.gro or .pdb) file */

void write_sto_conf_mtop(const char *outfile, const char *title,
                         struct gmx_mtop_t *mtop,
                         rvec x[], rvec *v, int ePBC, matrix box);
/* As write_sto_conf, but uses a gmx_mtop_t struct */

void get_stx_coordnum (const char *infile, int *natoms);
/* read the number of atoms from an STX file */

void read_stx_conf(const char *infile, char *title,
                   struct t_atoms *atoms,
                   rvec x[], rvec *v, int *ePBC, matrix box);
/* Read atoms, x, v and box from an STX file.
 * If ePBC!=NULL return the type of pbc in *ePBC or -1 if unknown.
 */

#ifdef __cplusplus
}
#endif

#endif  /* GMX_FILEIO_CONFIO_H */