98 lines
2.8 KiB
C++
98 lines
2.8 KiB
C++
// (C) Copyright Francois Faure 2001
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// Distributed under the Boost Software License, Version 1.0. (See
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// accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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#include <boost/config.hpp>
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#if defined(BOOST_MSVC) && BOOST_MSVC <= 1300
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#error adjacency_list_io.hpp has not been ported to work with VC++
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#endif
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#include <boost/graph/adjacency_list_io.hpp>
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#include <fstream>
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using namespace boost;
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//======== my data structure
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struct MyStruct { double value; };
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std::ostream& operator << ( std::ostream& out, const MyStruct& s )
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{
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out << s.value << " ";
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return out;
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}
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std::istream& operator >> ( std::istream& in, MyStruct& s )
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{
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in >> s.value;
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return in;
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}
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//======== vertex properties
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struct n1_t { enum { num = 23063}; typedef vertex_property_tag kind; };
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struct n2_t { enum { num = 23062}; typedef vertex_property_tag kind; };
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struct n3_t { enum { num = 23061}; typedef vertex_property_tag kind; };
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typedef property< n1_t, int,
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property< n2_t, double,
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property< n3_t, MyStruct > > > VertexProperty;
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//====== edge properties
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struct e1_t { enum { num = 23064}; typedef edge_property_tag kind; };
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typedef property<e1_t, double> EdgeProperty;
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//===== graph types
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typedef
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adjacency_list<vecS, listS, directedS, no_property, no_property>
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Graph1;
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typedef
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adjacency_list<setS, setS, bidirectionalS, VertexProperty, EdgeProperty>
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Graph2;
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int
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main()
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{
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// read Graph1
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Graph1 g1;
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std::ifstream readFile1("data1.txt");
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readFile1 >> read( g1 );
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std::cout << "graph g1 from file data1.txt:\n"
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<< write( g1 )
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<< std::endl;
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// read Graph2 and all internal properties
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Graph2 g2;
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std::ifstream readFile2("data2.txt");
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readFile2 >> read( g2 );
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std::cout << "graph g2 from file data2.txt:\n"
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<< write( g2 )
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<< std::endl;
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// read Graph2, no property given. Write no property.
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Graph2 g21;
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std::ifstream readFile21("data1.txt");
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readFile21 >> read( g21, no_property(), no_property() );
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std::cout << "graph g21 from file data1.txt:\n"
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<< write(g21, no_property(), no_property())
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<< std::endl;
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// read Graph2, incomplete data in a different order. Write it diffently.
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Graph2 g31;
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std::ifstream readFile31("data3.txt");
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typedef property< n3_t, MyStruct, property< n1_t, int > > readNodeProp;
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readFile31 >> read( g31, readNodeProp() , EdgeProperty() );
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std::cout << "graph g31 from file data3.txt:\n"
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<< write( g31, property<n3_t, MyStruct>(), EdgeProperty() )
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<< std::endl;
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return 0;
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}
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