#include <iostream>#include <iomanip>#include <fstream>#include <cstdio>#include <cassert>#include <string.h>using namespace std;//---------------------------------------------------------------------------bool ParseCommandLine(int argc, char **argv,		      char **apsra_fname,		      char *cg_fname,		      char *rt_fname){  if (argc != 2)    return false;  *apsra_fname = argv[1];  sprintf(cg_fname, "%s.cg", *apsra_fname);  sprintf(rt_fname, "%s.rt", *apsra_fname);  return true;}//---------------------------------------------------------------------------bool seek(const char* fname, const char* rt_label, ifstream& fin){  fin.open(fname, ifstream::in);  if (!fin.is_open())    {      cerr << "Cannot open " << fname << endl;      assert(false);    }  bool found = false;  while (!fin.eof() && !found)    {      char line[256];      fin.getline(line, sizeof(line)-1);      if (strstr(line, rt_label) != NULL)	found = true;    }    return found;}//---------------------------------------------------------------------------bool ExtractRoutingTables(char* apsra_fname, char* rt_fname){  ofstream fout(rt_fname, ios::out);  if (!fout)    {      cerr << "Cannot write " << rt_fname << endl;      assert(false);    }  ifstream fin;  if (!seek(apsra_fname, "rtsize", fin))    {      cerr << "Invalid file format (cannot locate label 'rtsize_1')" << endl;      assert(false);    }  fout << "% Routing tables extracted from " << apsra_fname << endl;  fout << "% Node        In Dest Outs" << endl;  bool stop = false;  while (!fin.eof() && !stop)    {      char line[128];      fin.getline(line, sizeof(line)-1);      if (line[0] == '\0')	stop = true;      else	{	  int node_id, in_src, in_dst, dst_id;	  	  if (sscanf(line+1, "%d %d->%d %d", &node_id, &in_src, &in_dst, &dst_id) == 4)	    fout << line+1 << endl;	}    }    return true;}//---------------------------------------------------------------------------bool ExtractCommunicationGraph(char* apsra_fname, char* cg_fname){  ofstream fout(cg_fname, ios::out);  if (!fout)    {      cerr << "Cannot write " << cg_fname << endl;      assert(false);    }  ifstream fin;  if (!seek(apsra_fname, "Communication Graph", fin))    {      cerr << "Error: Invalid file format (cannot locate label 'Communication Graph')" << endl;      return false;    }  fout << "% Communication graph extracted from " << apsra_fname << endl;  fout << "% source  target" << endl;  bool stop = false;  while (!fin.eof() && !stop)    {      char line[128];      fin.getline(line, sizeof(line)-1);      if (line[0] == '\0')	stop = true;      else	{	  int src_id, dst_id;	  	  if (sscanf(line+1, "%d --> %d", &src_id, &dst_id) == 2)	    {	      fout << setw(8) << src_id		   << setw(8) << dst_id << endl;	    }	}    }    return true;}//---------------------------------------------------------------------------int main(int argc, char **argv){  char *apsra_fname;  char cg_fname[256], rt_fname[256];  if (!ParseCommandLine(argc, argv, &apsra_fname, cg_fname, rt_fname))    {      cout << "Use " << argv[0] << " <apsra fname>" << endl;      return 1;          }  if (!ExtractCommunicationGraph(apsra_fname, cg_fname))    cerr << "Warning: Cannot extract communication graph" << endl;  if (!ExtractRoutingTables(apsra_fname, rt_fname))    cerr << "Warning: Cannot extract routing tables" << endl;    return 0;}