// File: main_convert.cpp
// -- conversion of a graph from ascii to binary, sample main file
//-----------------------------------------------------------------------------
// Community detection 
// Based on the article "Fast unfolding of community hierarchies in large networks"
// Copyright (C) 2008 V. Blondel, J.-L. Guillaume, R. Lambiotte, E. Lefebvre
//
// This program must not be distributed without agreement of the above mentionned authors.
//-----------------------------------------------------------------------------
// Author   : E. Lefebvre, adapted by J.-L. Guillaume
// Email    : jean-loup.guillaume@lip6.fr
// Location : Paris, France
// Time	    : February 2008
//-----------------------------------------------------------------------------
// see readme.txt for more details

#include "graph.h"

using namespace std;

char *infile   = NULL;
char *outfile  = NULL;
char *outfile_w  = NULL;
int type       = UNWEIGHTED;
bool do_renumber = false;

void
usage(char *prog_name, const char *more) {
  cerr << more;
  cerr << "usage: " << prog_name << " -i input_file -o outfile [-r] [-w outfile_weight]" << endl << endl;
  cerr << "read the graph and convert it to binary format." << endl;
  cerr << "-r\tnodes are renumbered from 0 to nb_nodes-1 (the order is kept)." << endl;
  cerr << "-w filename\tread the graph as a weighted one and writes the weights in a separate file." << endl;
  cerr << "-h\tshow this usage message." << endl;
  exit(0);
}

void
parse_args(int argc, char **argv) {
  for (int i = 1; i < argc; i++) {
    if(argv[i][0] == '-') {
      switch(argv[i][1]) {
      case 'i':
	if (i==argc-1)
	  usage(argv[0], "Infile missing\n");
	infile = argv[i+1];
	i++;
	break;
      case 'o':
	if (i==argc-1)
	  usage(argv[0], "Outfile missing\n");
        outfile = argv[i+1];
	i++;
	break;
      case 'w' :
	type = WEIGHTED;
        outfile_w = argv[i+1];
	i++;
	break;
      case 'r' :
	do_renumber=true;
	break;
      default:
	usage(argv[0], "Unknown option\n");
      }
    } else {
      usage(argv[0], "More than one filename\n");
    }
  }
  if (infile==NULL || outfile==NULL)
    usage(argv[0], "In or outfile missing\n");
}

int
main(int argc, char **argv) {
  parse_args(argc, argv);

  Graph g(infile, type);

  g.clean(type);

  if (do_renumber)
    g.renumber(type);

  g.display_binary(outfile, outfile_w, type);

}