/* -*- mode: C -*-  */
/* 
   IGraph library.
   Copyright (C) 2009-2012  Gabor Csardi <csardi.gabor@gmail.com>
   334 Harvard street, Cambridge, MA 02139 USA
   
   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.,  51 Franklin Street, Fifth Floor, Boston, MA 
   02110-1301 USA

*/

#ifndef IGRAPH_FOREIGN_H
#define IGRAPH_FOREIGN_H

#undef __BEGIN_DECLS
#undef __END_DECLS
#ifdef __cplusplus
# define __BEGIN_DECLS extern "C" {
# define __END_DECLS }
#else
# define __BEGIN_DECLS /* empty */
# define __END_DECLS /* empty */
#endif

#include "igraph_constants.h"
#include "igraph_datatype.h"
#include "igraph_types.h"
#include "igraph_strvector.h"

#include <stdio.h>

__BEGIN_DECLS

/* -------------------------------------------------- */
/* Read and write foreign formats                     */
/* -------------------------------------------------- */

int igraph_read_graph_edgelist(igraph_t *graph, FILE *instream, 
			       igraph_integer_t n, igraph_bool_t directed);
int igraph_read_graph_ncol(igraph_t *graph, FILE *instream,
			   igraph_strvector_t *predefnames, igraph_bool_t names, 
			  igraph_add_weights_t weights, igraph_bool_t directed);
int igraph_read_graph_lgl(igraph_t *graph, FILE *instream,
			  igraph_bool_t names, igraph_add_weights_t weights,
			  igraph_bool_t directed);
int igraph_read_graph_pajek(igraph_t *graph, FILE *instream);
int igraph_read_graph_graphml(igraph_t *graph, FILE *instream,
			      int index);
int igraph_read_graph_dimacs(igraph_t *graph, FILE *instream,
			     igraph_strvector_t *problem,
			     igraph_vector_t *label,
			     igraph_integer_t *source, 
			     igraph_integer_t *target, 
			     igraph_vector_t *capacity, 
			     igraph_bool_t directed);
int igraph_read_graph_graphdb(igraph_t *graph, FILE *instream, 
			      igraph_bool_t directed);
int igraph_read_graph_gml(igraph_t *graph, FILE *instream);
int igraph_read_graph_dl(igraph_t *graph, FILE *instream, 
			 igraph_bool_t directed);

int igraph_write_graph_edgelist(const igraph_t *graph, FILE *outstream);
int igraph_write_graph_ncol(const igraph_t *graph, FILE *outstream,
			    const char *names, const char *weights);
int igraph_write_graph_lgl(const igraph_t *graph, FILE *outstream,
			   const char *names, const char *weights,
			   igraph_bool_t isolates);
int igraph_write_graph_graphml(const igraph_t *graph, FILE *outstream, 
			       igraph_bool_t prefixattr);
int igraph_write_graph_pajek(const igraph_t *graph, FILE *outstream);
int igraph_write_graph_dimacs(const igraph_t *graph, FILE *outstream,
			      long int source, long int target,
			      const igraph_vector_t *capacity);
int igraph_write_graph_gml(const igraph_t *graph, FILE *outstream, 
			   const igraph_vector_t *id, const char *creator);
int igraph_write_graph_dot(const igraph_t *graph, FILE *outstream);
int igraph_write_graph_leda(const igraph_t *graph, FILE *outstream,
        const char* vertex_attr_name, const char* edge_attr_name);

__END_DECLS

#endif
