1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313
| #include <boost/graph/adjacency_list.hpp>
#include <boost/graph/vf2_sub_graph_iso.hpp>
#include <boost/algorithm/string/split.hpp>
#include <boost/algorithm/string/classification.hpp>
#include <fstream>
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <ctime>
#include <queue> // std::queue
// for mmap:
#include <sys/mman.h>
#include <sys/stat.h>
#include <fcntl.h>
using namespace std;
using namespace boost;
//==========STRUCTURES==========
// 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;
typedef std::pair<edge_iter, edge_iter> edge_pair;
//=================callback used fro subgraph_iso=================================================================
struct my_callback {
template <typename CorrespondenceMap1To2, typename CorrespondenceMap2To1>
bool operator()(CorrespondenceMap1To2 f, CorrespondenceMap2To1 g) const {
return false;
}
};
//==========handle_error==========
void handle_error(const char *msg) {
perror(msg);
exit(255);
}
//============READ ALL THE FILE AND RETURN A STRING===================
const char *readfromfile(const char *fname, size_t &length) {
int fd = open(fname, O_RDONLY);
if (fd == -1)
handle_error("open");
// obtain file size
struct stat sb;
if (fstat(fd, &sb) == -1)
handle_error("fstat");
length = sb.st_size;
const char *addr = static_cast<const char *>(mmap(NULL, length, PROT_READ, MAP_PRIVATE, fd, 0u));
if (addr == MAP_FAILED)
handle_error("mmap");
// TODO close fd at some point in time, call munmap(...)
return addr;
}
//==========SPLIT THE STRING BY NEWLINE (\n) ==========
vector<string> splitstringtolines(string const& str) {
vector<string> split_vector;
split(split_vector, str, is_any_of("\n"));
return split_vector;
}
//============Get a string starting from pos============
string getpos(int const& pos, string const& yy) {
size_t i = pos;
string str;
for (; yy[i] != ' ' && i < yy.length(); i++)
str += yy[i];
return str;
}
//==================read string vector and return graphs vector===================
std::vector<Graph> creategraphs(std::vector<string> const& fichlines) {
std::vector<Graph> dataG;
int compide = 0; // compteur de id edge
for (string yy : fichlines) {
switch (yy[0]) {
case 't': {
string str2 = getpos(4, yy);
unsigned gid = atoi(str2.c_str());
dataG.emplace_back(GraphProperties(gid, gid));
compide = 0;
} break;
case 'v': {
assert(!dataG.empty()); // assert will terminate the program if its argument turns out to be false
// cout<<yy<<endl;
int vId, vLabel;
string vvv = getpos(2, yy);
vId = atoi(vvv.c_str());
string vvvv = getpos((int)vvv.length() + 3, yy);
// cout<<vvvv<<endl;
vLabel = atoi(vvvv.c_str());
boost::add_vertex(VertexProperties(vId, vLabel), dataG.back());
}
break;
case 'e': { // cout<<yy<<endl;
assert(!dataG.empty()); // assert will terminate the program if its argument turns out to be false
int fromId, toId, eLabel;
string eee = getpos(2, yy);
// cout<<eee<<endl;
fromId = atoi(eee.c_str());
string eee2 = getpos((int)eee.length() + 3, yy);
// cout<<eee2<<endl;
toId = atoi(eee2.c_str());
int c = (int)eee.length() + (int)eee2.length() + 4;
// cout<<c<<endl;
string eee3 = getpos(c, yy);
// cout<<eee3<<endl;
eLabel = atoi(eee3.c_str());
boost::add_edge(fromId, toId, EdgeProperties(compide, eLabel), dataG.back());
compide++;
} break;
}
}
return dataG;
}
//============test if the graph connectivity========================================================
bool graphconnexe(Graph const& g) {
return num_edges(g) >= num_vertices(g) - 1;
}
//====================print the graph information========================================================
void printgraph(Graph const& gr) {
typedef std::pair<edge_iter, edge_iter> edge_pair;
std::cout << " contains " << num_vertices(gr) << " vertices, and " << num_edges(gr) << " edges " << std::endl;
if (graphconnexe(gr)) {
// Vertex list
if (num_vertices(gr) != 0) {
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
if (num_edges(gr) != 0) {
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].id << "," << gr[to].id << ") ID: " << gr[edg.first].id
<< " , Label: " << gr[edg.first].label << std::endl;
}
}
std::cout << "\n\n" << std::endl;
} else {
cout << "Please check this graph connectivity." << endl;
}
}
//=========================================================
/*bool gUe(Graph &g, edge_iter ep, Graph t) {
vertex_t from = source(*ep, t);
vertex_t to = target(*ep, t);
Graph::edge_descriptor copied_edge = boost::add_edge(from, to, t[*ep], g).first;
g[source(copied_edge, g)] = t[from];
g[target(copied_edge, g)] = t[to];
if (graphconnexe(g) && graphconnexe(t)) {
return vf2_subgraph_iso(g, t, my_callback());
} else {
return false;
}
}*/
//=================test if the given vertice exist in the graph=========================
bool verticeexist(Graph const& g, int const& vId, int const& vlabel) {
int cpt = 0;
if (num_edges(g) != 0) {
for (size_t i = 0; i < num_vertices(g); ++i) // size_t vertice number in the graph
{
if ((g[i].id == vId) && (g[i].label == vlabel)) {
cpt++;
}
}
}
return cpt != 0;
}
//=============test if the given edge exist in the graph===========================
bool edgeexist(Graph const& g, int const& fromid, int const& toid, unsigned const& elabel) {
int bn = 0;
if (graphconnexe(g)) {
if (num_edges(g) != 0) {
edge_pair ep;
for (ep = edges(g); ep.first != ep.second; ++ep.first) // ep edge number
{
vertex_t from = source(*ep.first, g);
vertex_t to = target(*ep.first, g);
edge_t edg = edge(from, to, g);
if ((g[from].id == fromid) && (g[to].id == toid) && (g[edg.first].label == elabel)) {
bn++;
}
}
}
}
return (bn != 0);
}
// =============test if thoses vertices are neighbours============================
bool verticesareneighbours(Graph const& g, int const& a, int const& b) {
int bn = 0;
if (graphconnexe(g)) {
if (num_edges(g) != 0) {
edge_pair ep;
for (ep = edges(g); ep.first != ep.second; ++ep.first) // ep edge number
{
vertex_t from = source(*ep.first, g);
vertex_t to = target(*ep.first, g);
if (((g[from].id == a) || (g[to].id == a)) && ((g[from].id == b) || (g[to].id == b))) {
bn++;
}
}
}
}
return (bn != 0);
}
//=============test if those edges are neighbours=============================
template <typename Graph, typename E = typename boost::graph_traits<Graph>::edge_descriptor>
bool edgesareneighbours(Graph const& g, E e1, E e2) {
std::set<vertex_t> vertex_set {
source(e1, g), target(e1, g),
source(e2, g), target(e2, g),
};
return graphconnexe(g) && vertex_set.size() < 4;
}
//===============if the graph is empty add the edge with vertices===========================
void emptygraphaddedge(Graph &g, int fromId, int toId, int eLabel) {
if (num_edges(g) == 0) {
boost::add_edge(fromId, toId, EdgeProperties(num_edges(g) + 1, eLabel), g);
}
}
//==============================M A I N P R O G R A M =======================================
int main() {
clock_t start = std::clock();
size_t length;
std::vector<Graph> dataG = creategraphs(splitstringtolines(readfromfile("testgUe.txt", length)));
typedef std::pair<edge_iter, edge_iter> edge_pair;
if (!dataG.empty()) {
cout<<"graphconnexe?"<<graphconnexe(dataG[0]))<<endl;
cout<<"verticeexist?"<<verticeexist(dataG[0],1,4);
cout<<"verticeexist?"<<verticeexist(dataG[0],4,2);
cout<<"verticesareneighbours?"<<verticesareneighbours(dataG[0],1,4))<<endl;
cout<<"verticesareneighbours?"<<verticesareneighbours(dataG[0],4,2))<<endl;
cout<<"edgeexist?"<<edgeexist(dataG[0],1,4,16)<<endl;
cout<<"edgeexist?"<<edgeexist(dataG[0],1,4,12)<<endl;
edge_pair ep = edges(dataG[0]);
if (size(ep) >= 2) {
Graph::edge_descriptor e1 = *ep.first++;
Graph::edge_descriptor e2 = *ep.first++;
cout << "edgesareneighbours?" << edgesareneighbours(dataG[0], e1, e2) << endl;
}
}
// end and time
cout << "FILE Contains " << dataG.size() << " graphs.\nTIME: " << (std::clock() - start) / (double)CLOCKS_PER_SEC
<< "s" << endl; // fin du programme.
} |
Partager