#include <iostream>
#include <cstdlib>
#include <cstdio>
#include <dirent.h>
#include <string>
#include <fstream>
#include "sys/stat.h"
using namespace std;

int main(void){
    DIR *dir;
    struct dirent *ent;
    if ((dir = opendir (".")) != NULL) {
      /* print all the files and directories within directory */
      while ((ent = readdir (dir)) != NULL) {
        //printf ("%s\n", ent->d_name);
        string katalooginimi=ent->d_name;
        string lopp=".txt";
        //cout << katalooginimi << endl;
        if(katalooginimi.length()>4){
            if(katalooginimi.compare(katalooginimi.length()-4, 4, lopp)==0){
                //cout << " lopp " << katalooginimi << endl;
                std::ifstream ifs(katalooginimi.c_str());
  std::string content( (std::istreambuf_iterator<char>(ifs) ),
                       (std::istreambuf_iterator<char>()    ) );
  std::cout << content << endl;
            }
        }
        struct stat s;
        if(stat(ent->d_name, &s)==0){
            if(s.st_mode & S_IFDIR){
                cout << "kataloog " << ent->d_name << endl;
                 DIR *dir2;
                struct dirent *ent2;
               if ((dir2 = opendir (ent->d_name)) != NULL) {
               while ((ent2 = readdir (dir2)) != NULL) {
                   string katalooginimi2=ent2->d_name;
                   cout << "seest leiti " << katalooginimi2 << endl;
        if(katalooginimi2.length()>4){
            if(katalooginimi2.compare(katalooginimi2.length()-4, 4, lopp)==0){
                cout << " lopp " << katalooginimi2 << endl;
                std::ifstream ifs2((katalooginimi+"/"+katalooginimi2).c_str());
  std::string content2( (std::istreambuf_iterator<char>(ifs2) ),
                       (std::istreambuf_iterator<char>()    ) );
  std::cout << content2 << endl;
            }
        }
                    
               }
               closedir(dir2);
              } 
            }
        }
      } 
      closedir (dir);
    } else {
      /* could not open directory */
      perror ("");
      return EXIT_FAILURE;
    }
}