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#include <boost/graph/adjacency_list.hpp>
#include <boost/graph/vf2_sub_graph_iso.hpp>
#include <fstream>
#include <iostream>
#include <string>
#include <vector>
#include <ctime>
using namespace std;
using namespace boost;
/*********************************************/
// vertex
struct VertexProperties {
int id;
int label;
VertexProperties(unsigned i=0, unsigned l=0) : id(i), label(l) {}
};
// edge
struct EdgeProperties {
unsigned id;
unsigned label;
EdgeProperties(unsigned i=0, unsigned l=0) : id(i), label(l) {}
};
// Graph
struct GraphProperties {
unsigned id;
unsigned label;
GraphProperties(unsigned i=0, unsigned l=0) : id(i), label(l) {}
};
// adjency list
typedef boost::adjacency_list<boost::vecS, boost::vecS, boost::undirectedS,
VertexProperties,
EdgeProperties,
GraphProperties> Graph;
// descriptors
typedef boost::graph_traits<Graph>::vertex_descriptor vertex_t;
typedef std::pair<boost::graph_traits<Graph>::edge_descriptor, bool> edge_t;
// iterators
typedef graph_traits<Graph>::vertex_iterator vertex_iter;
typedef graph_traits<Graph>::edge_iterator edge_iter;
//==================================================================================
std::vector<Graph> readandcreategraphs(string fich)
{
std::vector<Graph> vect;
std::ifstream file_reader(fich); // flux d'entrée pour opérer sur les fichiers.
//ifstream * file_reader= new ifstream("60.txt" ); //flux d'entrée pour opérer sur les fichiers.
std::string line;
while (std::getline(file_reader, line)) { // getline reads characters from an input stream and places them into a string
char lineType;
std::stringstream ss(line); // use a string buffer that contains a sequence of characters.
if (ss >> lineType) switch (lineType) {
case 't':
{
char diez;
unsigned gid;
if (ss >> diez >> gid) {
vect.emplace_back(GraphProperties (gid, gid));//1000.data>>3,381s
//vect.push_back(GraphProperties (gid, gid));//1000.data>>3,7776s
}
else throw std::runtime_error("Error parsing '" + line + "'");
}
break;
case 'v':
{
assert(!vect.empty());
int vId, vLabel;
if (ss >> vId >> vLabel) {
boost::add_vertex(VertexProperties(vId, vLabel), vect.back());
}
else throw std::runtime_error("Error parsing '" + line + "'");
}
break;
case 'e':
{
assert(!vect.empty());
int fromId, toId, vLabel;
if (ss >> fromId >> toId >> vLabel) {
// Note that the EdgeProperty.id doesn't make sense with your input data
// as it only contains [vertexFrom vertexTo edgeData]
boost::add_edge(fromId, toId, EdgeProperties(vLabel, vLabel), vect.back());
}
else throw std::runtime_error("Error parsing '" + line + "'");
}
break;
} else
{
// ignoring empty line
}
}
return vect;
}
//==================================================================================
int main()
{
clock_t start=std::clock();
std::vector<Graph> dataG= readandcreategraphs("5.txt");
//std::cout << "Lecture et creation de:" << dataG.size() << " graphs " << std::endl;
Graph testg;
typedef std::pair<edge_iter, edge_iter> edge_pair;
cout<<"TIME: "<<( std::clock() - start ) / (double) CLOCKS_PER_SEC<<"s"<<endl; // fin du programme.
typedef std::pair<edge_iter, edge_iter> edge_pair;
int c = 0; //compteur de dataG
for (auto gr : dataG)
{
std::cout << "* * * Graph " << c << " * * * contains " << num_vertices(gr) << " vertices, and " << num_edges(gr) << " edges " << std::endl;
//Vertex list
std::cout << " Vertex list: " << std::endl;
for (size_t i = 0 ; i < num_vertices(gr) ; ++i) //size_t vertice number in the graph
{
std::cout << " v[" << i << "] ID: " << gr[i].id << ", Label: " << gr[i].label << std::endl;
}
//Edge list
std::cout << " Edge list: " << std::endl;
edge_pair ep;
for (ep = edges(gr); ep.first != ep.second; ++ep.first) //ep edge number
{
vertex_t from = source(*ep.first, gr);
vertex_t to = target(*ep.first, gr);
edge_t edg = edge(from, to, gr);
std::cout << " e(" << gr[from].label << "," << gr[to].label << ") ID: " << gr[edg.first].id << " , Label: " << gr[edg.first].label << std::endl;
}
std::cout << std::endl;
c++;
}
} |
multi threading c++
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