read current directory in linux

RyuKnightly (10)


hello
how to stream next directory or folder in linux ?

for example :

if direct /home/member/ exist
then get all of next directory
>/home/member/user1/data.txt
>/home/member/user2/data.txt
>/home/member/user3/data.txt
and if data.txt will break

then i want display word of "user1,user2,user3" on console

please help me ^^
thanks you ^^
Last edited on
modoran (2077)
Use opendir() and readdir() in *nix world.
RyuKnightly (10)


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#include <iostream>
#include <string>
#include <vector>
#include <stdio.h>
#include <cstring>


#include <sys/types.h>
#include <dirent.h>
#include <sys/stat.h>
#include <unistd.h>

using namespace std;

int main ()
{
    char n[20];

    unsigned char isFolder = 0x4;
     unsigned char isFile = 0x8;
    DIR *dir;
    struct dirent *ent;
    dir = opendir ("User/");
        if (dir != NULL) {

          /* print all the files and directories within directory */
          while ((ent = readdir (dir)) != NULL) {
            //printf ("%s\n", ent->d_name);

            //folder sign
            if(ent->d_type == isFolder)
            {
                cout <<ent->d_name <<"\n";


            }


          }
          closedir (dir);


        } else {
          /* could not open directory */
          perror ("");
          return 0;
        }

        cout << "=========" << endl;

}


out put:
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user2
..
user3
user1
.
======

Process returned 0 (0x0)   execution time : 0.012 s
Press ENTER to continue.



i got a little problem

how to make output without any dot ?
".."
"."

and make output like this
and under "====" arranged alphabetically
and also go to next folder for read data.txt
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user2
user3
user1

======

user1
user2
user3




thanks you

sorry for my bad english :D
Last edited on
Cubbi (4774)
boost skips those by default, and has the advantage of being portable to other platforms

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#include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <boost/filesystem.hpp>
namespace fs = boost::filesystem;
int main ()
{
    std::vector<std::string> v;

    fs::path p("User");
    if(exists(p) && is_directory(p))
        for(auto i = fs::directory_iterator(p); i != fs::directory_iterator(); ++i)
            if(is_directory(i->path()))
                v.push_back(i->path().filename().string());

    for(auto& s: v)
        std::cout << s << '\n';

    std::cout << "=========\n";

    sort(v.begin(), v.end());

    for(auto& s: v)
        std::cout << s << '\n';
}
Last edited on
RyuKnightly (10)
@cubbi how to get the boost header ?


.....

i'v seen the boost file , it's too large :D
Last edited on
Cubbi (4774)
how to get the boost header ?

Install the boost development package with whatever package manager your Linux uses.
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