// François Faure, iMAGIS-GRAVIR / UJF, 2001



#include <boost/graph/adjacency_list_io.hpp>

#include <fstream>



using namespace boost;



//======== my data structure

struct MyStruct { double value; };

ostream& operator << ( ostream& out, const MyStruct& s )

{

	out << s.value << " ";

	return out;

}

istream& operator >> ( istream& in, MyStruct& s )

{

	in >> s.value;

	return in;

}



//======== vertex properties

struct n1_t { enum { num = 23063}; typedef vertex_property_tag kind; };

struct n2_t { enum { num = 23062}; typedef vertex_property_tag kind; };

struct n3_t { enum { num = 23061}; typedef vertex_property_tag kind; };

typedef property< n1_t, int,

        property< n2_t, double,

		property< n3_t, MyStruct > > > VertexProperty;





//====== edge properties

struct e1_t { enum { num = 23064}; typedef edge_property_tag kind; };

typedef property<e1_t, double> EdgeProperty;







//===== graph types



typedef 

	adjacency_list<vecS, listS, directedS, no_property, no_property> 

	Graph1;



typedef 

	adjacency_list<setS, setS, bidirectionalS, VertexProperty, EdgeProperty> 

	Graph2;







int 

main()

{

	// read Graph1

	Graph1 g1;

	ifstream readFile1("data1.txt");

	readFile1 >> read( g1 );

 	cout << "graph g1 from file data1.txt:\n" 

	     << write( g1 ) 

		 << endl;



	// read Graph2 and all internal properties

	Graph2 g2;

	ifstream readFile2("data2.txt");

	readFile2 >> read( g2 );

 	cout << "graph g2 from file data2.txt:\n" 

	     << write( g2 ) 

		 << endl;

	

	// read Graph2, no property given. Write no property.

	Graph2 g21;

	ifstream readFile21("data1.txt");

	readFile21 >> read( g21, no_property(), no_property() );

 	cout << "graph g21 from file data1.txt:\n" 

	     << write(g21, no_property(), no_property()) 

		 << endl;

	

	// read Graph2, incomplete data in a different order. Write it diffently.

	Graph2 g31;

	ifstream readFile31("data3.txt");

	typedef property< n3_t, MyStruct, property< n1_t, int > > readNodeProp;

	readFile31 >> read( g31, readNodeProp() , EdgeProperty() );

 	cout << "graph g31 from file data3.txt:\n" 

	     << write( g31, property<n3_t, MyStruct>(), EdgeProperty() ) 

		 << endl;

	



	return 0;

}



