#include <stdio.h>
#include <dirent.h>
#include <string.h>
#include <iostream>

using namespace std;

char nume_dir[1024]="C://";



int listare(char cale[])
{
     struct dirent *de;  // Pointer for directory entry
    // opendir() returns a pointer of DIR type.
    DIR *dr = opendir(cale);
    if (dr == NULL)  // opendir returns NULL if couldn't open directory
    {
        printf("Could not open current directory" );
        return 0;
    }
    // Refer http://pubs.opengroup.org/onlinepubs/7990989775/xsh/readdir.html
    // for readdir()
    while ((de = readdir(dr)) != NULL)
    {
        printf("%s\n", de->d_name);
        char cale_noua[1024]="";
        strcpy(cale_noua,cale);
        strcat(cale_noua,de->d_name);
        strcat(cale_noua,"//");
    }
    closedir(dr);
}

int searchFile(char cale[], char numefis[])
{
    //cout <<"Caut in: "<< cale << endl;
    struct dirent *de;

    DIR *dr = opendir(cale);
    if (dr != NULL)
    {
        while ((de = readdir(dr)) != NULL)
        {
            if (strcmp(de->d_name, ".")==0) continue;
            if (strcmp(de->d_name, "..")==0) continue;

            if (strcmp(de->d_name, numefis)==0) cout << cale << numefis<< endl;
            //printf("%s\n", de->d_name);
            char cale_noua[1024]="";
            strcpy(cale_noua, cale);
            strcat(cale_noua,de->d_name);
            strcat(cale_noua,"//");
            searchFile(cale_noua, numefis);
        }
    }
    closedir(dr);
}


int opt=1;
int main(void)
{
    while(opt!=0)
    {
        cout << "\n\n1 = afisare cale\n";
        cout << "2 = afisare director curent\n";
        cout << "3 = change directory\n";
        cin >> opt;
        if (opt==1) cout << nume_dir;
        if (opt==2) listare(nume_dir);
        if (opt==3)
        {
            char new_dir[255];
            cin.get();
            cin.get(new_dir,255);

            if (strcmp(new_dir,"..")==0 && strcmp(nume_dir,"C://")!=0)
            {
                nume_dir[strlen(nume_dir)-1]=0;
                nume_dir[strlen(nume_dir)-1]=0;
                while(nume_dir[strlen(nume_dir)-1]!='/') nume_dir[strlen(nume_dir)-1]=0;
            }
            else
            {
                strcat(nume_dir, new_dir);
                strcat(nume_dir, "//");
            }
        }
        if (opt==4)
            searchFile(nume_dir, "test.txt");
    }
    return 0;
}